Instrument transformer - Buyers guide

Outdoor Instrument Transormers Buyer’s Guide

Tab T able le o co cont nten entt

Page

Products

Introduction

3

Explanations

4

Silicone Rubber (SIR) Insulators

7

Design features and Advantages

Technic Tech nical al inormation

Currrent transormers IMB

8

Inductive voltage transormers EMF

10

Capacitor voltage transormers CPB

12

Coupling Capacitors CCA and CCB

14

Technical catalogues: CT IMB

17

VT E MF

31

CVT CPB

39

Coupling Capacitors CCA and CCB

51

Optional

2 Outdoor Instrument Transormers Transormers | Buyer’s Guide

PQSensor™

58

Cable entry kits - Roxtec CF 16

62

Quality, control and testing

64

Inquiry and ordering data

66

Day ater day, all year around— with ABB Instrument Transormers ABB h as b een prod producing ucing inst instrume rument nt t rans form formers ers for more than 60 years. Thousands of our products perform vital functions in electric power networks around the world – day after day, all year round. Their main applications include revenue metering, control, indication and relay protection.

P ro du ct r ang e

All inst instrume rument nt t rans form formers ers supp supplied lied by A BB are a re tailo t ailo rmade to meet the needs of our customers. An i nstr nstrumen umentt tr ansf ansforme orme r must m ust be capa ble of withstanding very high stresses in all climatic conditions. We design and manufacture our products for a service life of at least 30 years. Actually, most last even longer.

Type

H ig hes t vol ta ge fo r eq ui pmen t (k V)

Current Transformer IMB Hairpin/Tank type

IM B 36 - 8 00

36 - 76 5

EM F 52 - 17 0

52 - 17 0

CP B 72 - 8 00

7 2.5 - 7 65

Paper, mineral oil insulation, quartz illing Inductive Voltage Transformer EMF P aper, m iner al oil in s ulat ion , quar tz i lling Capacitor Voltage Transformer CP CVD: Mixed dielectric polypropylene-ilm and synthetic oil. EMU: Paper, mineral oil Coupling Capacitors Capacitors CCA or CCB In ten ded o r pow er line car ri er app lica tio ns

CC A (h igh cap acit ance ) 7 2 - 550 CC B ( ex tr a high cap acit anc e) 145 - 8 00

7 2.5 - 5 50 14 5 - 765

We are exible and tailor each instrument transormer the needs o our customers. Sizes other than those m entioned above can be supplied upon request.

Buyer’s Guide | Outdoor Instrument Transormers 3

Explanations

Technical specifcations - General Standard/Customer specification There are i nter nati onal and nati onal standards, a s we ll a s customer speciications. ABB High Voltage Products can meet most requirements, as long as we are aware o them. When in doubt, please enclose a copy o your speciications with the inquiry. Rated voltage The rate d voltage i s the m axim um v oltage (phase-phase), expressed in kV rms, o the system or which the equipment is intended. It is also known as maximum system voltage. Rated insulation level The combinat ion o v oltage values w hich characte rize the insulation o an instrument transormer with regard to its capability to withstand dielectric stresses. The rate d value given is va lid or altitudes ≤1000 m above sea level. A correction actor is introduced or higher altitudes. Lightning impulse test The lightning impulse test is perormed with a standardized wave shape – 1.2/50 µs – or simulation o lightning overvoltage. Rated Power Frequency Withstand Voltage This test is to sh ow that the apparatu s can withs tand the power requency over-voltages that can occur. The Rate d Po wer Frequ ency Withstand volt age indi cates the required withstand voltage. The value is expressed in kV rms. Rated SIWL For voltages ≥ 300 kV the power-requency voltage test is partly replaced by the switching impulse test. The wave shape 250/2500 µs simulates switching over-voltage. The rate d Switching Impu lse Withstand Level (S IWL) indi cates the required withstand level phase-to-earth (phaseto-ground), between phases and across open contacts. The value is expressed in kV as a peak value. Rated Chopped Wave Impulse Withstand voltage, Phase-to-earth The rate d chopped wave i mpulse w iths tand level at 2 µs and 3 µs respectively, indicates the required withstand level phase-to-earth (phase-to-ground). Rated frequency The rate d (power) re quency i s the nominal requency o the system expressed in Hz, which the instrument transormer is designed to operate in. 4 Explanations | Buyer’s Guide

Standard requencies are 50 Hz and 60 Hz. Other requencies, such as 16 2/3 Hz and 25 Hz might be applicable or some railway applications. Ambient temp erature Average 24 hours ambie nt t emperature above the standardized +35 °C inluences the thermal design o the transormers and must thereore be speciied. Installation altitude I installed >1000 m above sea level, the external dielectric strength is reduced due to the lower density o the air. Always speciy the installation altitude and normal rated insulation levels. ABB will make t he needed correction when an altitude higher than 1000 meters ASL is speciied. Internal insulation is not aected by installation altitude and dielectric routine tests will be perormed at the rated insulation levels. Creepage distance The creepage dist ance is dein ed as the s hort est dist ance along the surace o an insulator between high voltage and ground. The required c reepage distance is s peciied by t he u ser in: − mm (total creepage distance) − mm/kV (creepage distance in relation to the highest system voltage). Pollution level Environmental conditions, with respect to pollution, are sometimes categorized in pollution levels. Five pollution levels are described in IEC 60815-1. There is a relati on between each poll utio n le vel and a co rresponding minimum nominal speciic creepage distance. Pollution level

Creepage distance

Creepage distance (Old)

Phase - Ground voltage

Phase - Phase voltage

mm/kV

mm/kV

a - Very light

22

-

b - Light

28

16

c - Medium

35

20

d - Heavy

44

25

e - Very Heavy

55

31

Wind load The specifed wind loads or instrument transormers intended or outdoor normal conditions are based on a wind speed o 34 m/s.

Current transormers Currents The rate d current s are the values o pr imary an d second ary currents on which perormance is based. Rated primary current The rate d current (someti mes reerred t o as ra ted curre nt, nominal current or rated continuous current) is the maximum continuous current the equipment is allowed to carry. The curre nt i s ex press ed in A rms.

Secondary reconnection Extra secondary terminals (taps) are taken out rom the secondary winding. The load capacity drops as the ampere-turns decrease on the taps, but the short-circuit capacity remains constant. Each core can be individually reconnected.

It should be selected about 10 - 40% higher than the estimated operating current. Closest standardized value should be chosen.

Burden and Accuracy Class (IEC) Burden The external i mpeda nce in t he s econdary circuit in ohms at the speciied power actor. It is usually expressed as the apparent power – in VA -, which is taken up at rated secondary current. It is important to determine the power consumption o connected meters and relays including the cables. Unnecessarily high burdens are oten speciied or modern equipment. Note that the accuracy or the measuring core, according to IEC, can be outside the class limit i the actual burden is below 25% o the rated burden.

Extended current ratings A acto r that mult ipli ed by the rated current gives the maxi mum continuous load current and the limit or accuracy. Standard values o extended primary current are 120, 150 and 200% o rated current. Unless otherwise speciied, the rated continuous thermal current shall be the rated primary current.

Accurac y The accuracy clas s o r measuring cores is a ccording to the IEC standard given as 0.2, 0.2S, 0.5, 0.5S or 1.0 depending on the application. For protection cores the class is normally 5P or 10P. Other classes are quoted on request, e.g. class PR, PX, TPS, TPX or TPY.

Rated secondary current The standard valu es a re 1, 2 and 5 A. 1 A gives an overall lower burden requirement through lower cable burden.

Rct The seco ndary wi nding resist ance at 75 °C

The maxim um co ntinuous thermal current is based o n average 24 h ambient temperature o +35 °C.

Rated short-time thermal current (I th ) The rate d sh ort- time with stan d current is the maxi mum current (expressed in kA rms) which the equipment shall be able to carry or a speciied time duration. Standard values or duration are 1 or 3 s. I th depends on the short-circuit power o the grid and can be calculated rom the ormula: Ith = P k (MW) / U m (kV) x √ 3 kA. Rated dynamic current (I dyn ) The dynamic short-time current is according to IEC, Idyn = 2.5 x Ith and according to IEEE, I dyn = 2.7 x I th Reconnection The curre nt t ransorm er c an be design ed with eith er primary or secondary reconnection or a combination o both to obtain more current ratios. Primary reconnection The ampere-turns always remain the same and thereby the load capacity (burden) remains the same. The short-circuit capacity however may be reduced or the lower ratios. Primary reconnection is available or currents in relation 2:1 or 4:2:1.

Instrument Security Factor (FS) To protect m eter s an d instrumen ts rom being damaged by high currents, an FS actor o 5 or 10 is oten speciied or measuring cores. This means that the secondary current will increase maximum 5 or 10 times when the rated burden is connected. FS10 is normally suicient or modern meters. Accurac y Limit Fact or ( ALF) The protecti on c ores must be able to reproduce the ault current without being saturated. The overcurrent act or  or p rotectio n co res i s ca lled ALF. ALF = 10 or 20 is c ommonly used . Both FS and ALF are valid at rated burden only. I lower burden the FS and ALF will increase Burden and Accuracy Class for other standards, such as ANSI, IEEE, etc. More detailed inormation about standards other than IEC can be ound in our Application Guide, Outdoor Instrument Transormer s, Catal og Publ ication 1HSM 9543 40-00en or i n the actual standard.

Buyer’s Guide | Explanations 5

Explanations

Voltage transormers Voltages The rate d voltages are t he v alues o pr imary an d secondary voltages on which the perormance is based. Voltage facto r (F V ) It is important that the voltage transormer, or t hermal and protection reasons, can withstand and reproduce the continuous ault overvoltages that can occur in the net. The overvoltage actor is abbreviated as F V . The IEC stan dard speciies a volt age act or o  1.2 cont inuously and simultaneously 1.5/30 sec. or systems with eective grounding with automatic ault tripping, and 1.9/8 hrs or systems with insulated neutral point without automatic ground ault systems. Accu racy, accordi ng t o IEC, or meas uring windings is  uli lled between 0.8 and 1.2 x rated voltage and or protection windings up to the voltage actor (1.5 or 1.9 x rated voltage). Reconnection The volt age transo rmer can be de sign ed with secondary reconnection. Secondary reconnection means that extra secondary terminals (taps) are taken out rom the secondary winding(s). Burden and accuracy class Burden The externa l im pedan ce in the s econ dary circuit in o hms at the speciied power actor. It is usually expressed as the apparent power – in VA -, which is taken up at the rated secondary voltage. (See Current Transormers above). The accuracy class or m easu ring wind ings , ac cording to IEC, is given as 0.2, 0.5 or 1.0 depending on the application. A rated burden o around 1.3-1.5 times the connected burden will give maximum accuracy at the connected burden. For protection purposes the class is normally 3P or 6P Simultaneous burden (IEC) Metering windings and protection windings not connected in open delta are considered as simultaneously loaded. A protection winding connected in open delta is not considered as a simultaneous load.

6 Explanations | Buyer’s Guide

Thermal limit burden Ther mal limi t bu rden is the total power th e transorm er c an supply without excessively high temperature rise. The transormer is engineered so that it can be loaded with the impedance corresponding to the load at rated voltage, multiplied by the square o the voltage actor. This means that at a voltage actor o 1.9/8h, or example, the limit burden = total rated burden x 1.9 2. The tran sormer cannot be s ubjected to a hi gher limit burden without being loaded higher than the rated burden. Consequently, because o loading considerations, it is unnecessary to speciy a higher thermal limit burden. Voltage drop The volt age drop in a n ex ternal seco ndary circu it ( cables and uses) can have a signiicantly larger inluence on the system ratio error than incorrect burden. Ferro-resonance Ferroresonance is a potential source o transient overvoltage. Three-phase, sing le-phase swit chin g, blown u ses, and broken conductors can result in overvoltage when erroresonance occurs between the magnetizing impedance o a transormer and the system capacitance o the isolated phase or phases. For example, the capacitance could be as simple as a length o cable connected to the ungrounded winding o a transormer. Another example o erroresonance occurring is when an inductive voltage transormer is connected in parallel with a large grading capacitor across the gap o a circuit breaker. Ferroresonance is usually known as a series resonance. Addi tiona l fo r Ca pacitor Voltage Transf orme rs ( CVT) and Capacitor Voltage Divider (CVD) Capacitance phase - ground Requirements or capacitance values can be applicable when using the CVT or communication over lines (or relay unctions or remote control). PLC = Power Line Carrier. Higher capacitance => Smaller impedance or signal. The ABB line matc hing unit can be adjus ted to any capacitance within requency range 50-500 kHz. The lowe r applied re quenc y decide the mini mum capacita nce o coupling capacitor. More information regarding instrument transformers More detailed inormation about instrument transormers can be ound in our Application Guide, Outdoor Instrument Transormers. Catalog Publication 1HSM 9543 40-00en

Silicone Rubber Insulators

Wide range of instrument transformers with silicone rubber (SIR) insulators ABB can supply mos t o  o ur instru ment t rans ormers w ith patented helical extrusion-moulded silicone rubber insulation. CT

IMB 36 - 800 kV

VT

EMF 52 - 170 k V

CVT

CPB 72 - 800 kV

CC

CCA/CCB 72 - 800 kV

Completed tests The sili cone mate rial used or ABB Inst rument Transormers is approved according to IEC and ANSI/IEEE standards.

Why Silicone Rubber Insulators? Ceramic (porcelain) insulators have perormed well or several decades, but one o the disadvantages with porcelain is its ragility. Listed below are some o the advantages o silicone rubber insulators compared to porcelain: − − − − − − − −

ABB manufact uring te chnique The pate nted heli cal extrusion moul ded sili cone rubber insulators without joints (chemical bonds between spirals) minimizes electrical ield concentrations and reduces build-up o contamination. The cross-laminated iberglass tube inside the insulator provides high mechanical strength.

Non-brittle Minimum risk or handling and transport damages Minimum risk or vandalism Light-weight Explosion saety Excellent pollution perormance Minimum maintenance in polluted areas Hydrophobic

Tests pe rormed: − Acce lerated agei ng test (1 000 h) − Lightning impulse test, wet power requency test and wet switching impulse test − Short circuit test − Temperature r ise test Color The (SIR) i nsul ator s o r the i nstr umen t trans orm ers are supplied in a light gray color. Deliveries ABB in Ludvika has supplied inst rume nt transormers with (SIR) insulators or the most severe conditions, rom marine climate to desert and/or polluted industrial areas. A reeren ce list can be provided on re quest.

There are several polymeric insulator materials available, of which silicone has proven to be superior. Comparison of polymeric insulators Epoxy

EP-rubber

Silicone

Brittle

Low

Excellent

Excellent

Insulation

Fair

Good

Excellent

Good

Excellent

Excellent

Excellent

Good

Excellent

Saety

Good

Good

Excellent

Earthquake

Good

Excellent

Excellent

Handling

Good

Excellent

Excellent

Maintenance

Fair

Fair

Excellent

Agei ng

Fair

Good

Exce llent

Good

Good

Excellent

Weight Mechanical strength

UV-resistance

Experience of material ABB has used sili cone rubbe r (S IR) insu lato rs s ince 1985, starting with surge arresters, and has gained considerable experience thereo.

More Information For additional inormation please reer to publication 1HSM 9543 01-06en.


IMB Design eatures and advantages

ABB’s oil minimum curre nt transformers type IMB is based on a hairpin design (shape of the primary conductor) also known as tank type. The basic design has been used by ABB for more than 60 y ears , with mo re than 1 60 000 units delivered. The design correspon ds w ith the deman ds o  bo th the IEC and IEEE standards. Special design solutions to meet other standards and/or speciications are also available. The unique  illi ng w ith quartz grai ns s atur ated in o il gives a resistant insulation in a compact design where the quantity o oil is kept to a minimum The IMB transormer has a ve ry  lexible desi gn t hat, o r ex ample, allows large and/or many cores. Primary winding The primary winding cons ists o on e or more parallel cond uctor o aluminum or copper designed as a U-shaped bushing with voltage grading capacitor layers. The insu lati on t echnique is a utomate d to give a si mple and controlled wrapping, which improves quality and minimizes variations. The conductor i s in sula ted with a special paper with hi gh mechanical and dielectric strength, low dielectric losses and good resistance to ageing. This design is a lso very suitable o r primar y wi ndings with many primary turns. This is used when the primary current is low, or instance unbalance protection in capacitor banks. (Ex. ratio 5/5 A) Cores and secondary windings The IMB type current transo rmers are lexib le and can n ormally accommodate any core coniguration required. Cores or metering purposes are usually made o nickel alloy, which eatures low losses (= high accuracy) and low saturation levels. The protection cores are m ade o high -grade oriented stee l strip. Protection cores with air gaps can be supplied or special applications.

8 Outdoor Instrument Transormers | Buyer’s Guide

The seco ndary wi nding co nsis ts o double ename lled copper wire, evenly distributed around the whole periphery o the core. The leakage reactance in the winding and also between extra tapping is thereore negligible. Impregnation Heating in a vacuum dries the windings. Ater assembly all ree space in the transormer (app. 60%) is illed with clean and dry quartz grain. The assembled transormer is vacuumtreated and impregnated with degassed mineral oil. The transormer is always delivered oil-illed and hermetically sealed. Tank and Insulator The lowe r se ctio n o the t ransorm er c onsi sts o a n al uminum tank in which the secondary windings and cores are mounted. The insu lato r, moun ted above th e transorm er t ank, cons ists as standard o high-grade brown-glazed porcelain. Designs using light gray porcelain or silicon rubber can be quoted on request. The seal ing syst em cons ists o O-ri ng gaskets. Expansion system The IMB has an expansion ve ssel placed o n top o  the insulator. A hermetically sealed expansion system, with a nitrogen cushion compressed by thermal expansion o the oil, is used in the IMB as the standard design. An expansion system with stainless steel expansion bellows can be quoted on request. On request – Capacitive voltage tap The capaciti ve layers in the h igh volt age insu lati on can be utilized as a capacitive voltage divider. A tap is brought out rom the second to last capacitor layer through a bushing on the transormer tank (in the terminal box or in a separate box, depending on the IMB tank design). An advantage o the capacitive terminal is that it can be used or checking the condition o the insulation through dielectric loss angle (tan delta) measurement without disconnecting the primary terminals. The tap can also be used or voltage indicati on, sync hroni zing or similar purpose, but the output is limited by t he low capacitance o the layers. The load connected m ust be less than 10 kohms and t he t ap must be grounded when not in use.

Climate The tran sormers are designed or, and are inst alled in , wi dely shiting conditions, rom polar to desert climates all over the world.

1

8 9

2

Service life The IMB tran sor mer is hermetically se aled and the low and even voltage stress in t he primary insulation gives a reliable product with expected service lie o more than 30 years. The IMB and its predecessors have since the 1930s been supplied in more than 160 000 units.

10

3

Expansion system The expansio n syste m, with a ni trogen g as c ushi on, incre ases operating reliability and minimizes the need o maintenance and inspections. This type o expansion system can be used in the IMB since the quartz illing reduces the oil volume and a relatively large gas volume minimizes pressure variations.

4

For higher rated currents an expansion vessel with external cooling ins is used to increase the cooling area and heat dissipation to the surrounding air. An expansio n sy stem with ga s-illed st ainl ess stee l ex pansion units surrounded by the oil and compressed by oil expansion can be quoted on request. Quartz filling Minimizes the quantity o oil and provides a mechanical support or the cores and primary winding during transport and in the event o a short-circuit.

5

Flexibility The IMB covers a wide range o primary currents up to 4 000 A. It can easily be adapted or large and/or many cores by increasing the volume o the tank.

6

7

Resistance to corrosion The sele cted aluminum allo ys g ive a hi gh degree o resis tanc e to corrosion, without the need o extra protection. Anodized parts or IMB 36-170 kV can be oered on request, or use in extreme environments. IMB >170 kV can be delivered with a protective painting. Seismic strength The IMB has a mechan ically ro bust cons tructio n, designed to withstand high demands o seismic acceleration without the need o dampers.

11

Current Transformer IMB

1

Gas cushion

7

C ap ac it iv e v ol ta ge ta p

2

O il i ll in g u ni t ( hi dd en )

3

Quartz illing

8

Expans ion vessel

4

P ap er- in su la te d p ri ma ry

9

Oil sight glass

conductor

10

P ri ma ry t er mi na l

5

Cores/secondary windings

11

G round t er minal

6

S ec on da ry te rm in al b ox

(on request)


EMF Design eatures and advantages

ABB’s in ductive voltage tran sformers are intended for connection between phase and ground in networks with insulated or direct-grounded neutral points.

The insu lato r, in i ts stan dard design, cons ists o high quality, brown glazed porcelain. The voltage transormers can also be supplied with silicone rubber insulators.

The design correspon ds w ith the requirements in t he I EC and IEEE standards. Special design solutions to meet other standards and customer requirements are also possible. The tran sor mers are desig ned with a low lux density in the core and can oten be dimensioned or 190% o the rated voltage or more than 8 hours.

Expansion system The EMF has an e xpansion vess el placed on the top sect ion o the porcelain. The EMF has a closed expansion system, without moving parts and with a nitrogen cushion, that is compressed by the expansion o the oil. A prerequisite or this is that the quartz sand illing reduces the oil volume, and the use o a relatively large gas volume, which gives small pressure variations in the system.

Primary windings The primary winding is designed as a mult i-layer coil o doubl e enamelled wire with layer insulation o special paper. Both ends o the windings are connected to metal shields. Secondary and tertiary windings In its standard design the transormer has a secondary measurement winding and a tertiary winding or ground ault protection, but other conigurations are available as required. (2 secondary windings in a design according to IEEE standard) The windings are d esig ned with double ename lled wire and are insulated rom the core and the primary winding with pressboard (presspahn) and paper. The windings can be equipped w ith additional term inals or other ratios (taps). Core The tran sor mer has a co re o careully selected material, to give a lat magnetization curve. The core is over-dimensioned with a very low lux at operating voltage. Impregnation Heating in a vacuum dries the windings. Ater assembly, all ree space in the transormer (approximately 60%) is illed with clean and dry quartz grains. The assembled transormer is vacuum-treated and impregnated with degassed mineral oil. The tran sor mer is a lways delive red o il- illed an d hermet ically sealed. Tank and insulator EMF 52-170: The lower section o the transormer consists o an aluminum tank in which the winding and core are placed. The tank consists o select ed alumi num alloys that give a high degree o resistance to corrosion, without the need o extra protection. Anodized aluminum can be oered on request. The sealing syst em consists o O- ring gaskets.


Ferro-resonance The design o the EMF notably counteracts the occurrenc e o erro-resonance phenomena: − The low lux in the core at the operatin g voltage gives a large saety margin against saturation i erro-resonance oscillations should occur. − The lat magn etiz atio n cu rve gives a smoo th incre ase o core losses, which results in an eective attenuation o the erro-resonance. I the EMF transormer will be installed in a network with a high risk or erro-resonance, it can, as a urther saety precaution, be equipped with an extra damping burden, on a delta connected tertiary winding. See the igure below. R S T

A

N

A

N

A

N

a

n

a

n

a

n

da

dn

da

dn

da

dn

60 ohm, 200 W

Damping of ferro-resonance

Climate Thes e transorm ers are desig ned or, and are inst alle d in a wide range o shiting conditions, rom polar to desert climates all over the world. Service Life The low and even volt age stresses in t he primary winding give a reliable product with a long service lie. EMF and its predecessors have been supplied in more than 55 000 units since the 1940s. Expansion system The expansio n syste m based on t he nitro gen cushion gives superior operating reliability and minimizes the need o maintenance and inspection o the transormer.

1 9 2

3

4 5

Quartz filling Minimizes the quantity o oil and provides a mechanical support to the cores and primary winding. Resistance to corrosion EMF 52-170: The selected aluminum alloys give a high degree o resistance to corrosion without the need o extra protection. Anodized alumin um c an be oered on request. Seismic strength EMF is designed to withstand the high demands o seismic acceleration.

10 1

Primary terminal

9

Expansion system

2

O il lev el s ig ht gla ss

10

P aper ins ulat io n

3

Oil

11

Tank

4

Quartz illing

12

P rim ary w indi ng

5

Insulator

13

S ec on da ry w in di ng s

6

Liting lug

14

Core

7

Se cond ary t erm inal box

15

G ro un d c on ne ct io n

8

N eut ral en d t er minal

11

6

12 13 14

7

15 8

Voltage transf ormer EMF 14 5


CPB Design eatures and advantages

ABB’s Ca pacitor Voltage Transformers (CVTs) a re intended for connection between phase and ground in networks with isolated or grounded neutral. ABB oers a worl d-cl ass CVT with su perior  erro- resonance suppression and transient response. The design correspon ds t o t he require ment s o IE C and ANSI and all national standards based upon them. Special designs to meet other standards and customer unique speciications are also available. The high quality, st ate o the art, au tomated manu acture o the capacitor elements provides consistent quality to ensure long term reliability and perormance. Due to the optimized proportions o the mixed dielectric, the capacitor elements are subject to low electrical stress with high stability under extreme temperature variations. CPB portfolio features The port oli o co nsis ts o three versio ns o Capacitor Volt age Dividers (CVDs), light, medium and heavy, combined with two sizes o Electromagnetic Units (EMU). The two sizes o EMU comprise a medium size optimized in respect to market requirements or number o windings and perormance. A lighter EMU is available where customers have lower burden requirements. The light capacitance CVD is manuactured up to 245 kV and can only be incorporated with the lightweight EMU. This special cost eec tive combinat ion is in t his document designated CPB(L). Capacitor Voltage Divider The capacito r vo ltag e divider (CVD) cons ists o on e or more capacitor units, assembled on top o each other, with each unit containing the required number o series-connected, oilinsulated capacitor elements. The units are completely illed with synthetic oil, hermetically sealed with stainless steel bellows and incorporate o-ring seals throughout the design.


The design o the capac itiv e el ements is consistent with requirements o revenue metering, with the active component o aluminum oils insulated with polypropylene ilm and paper and impregnated with PCB ree synthetic oil. The synthetic oil has superior and consistent insulating properties when compared to mineral oil. The automat ed proces sing o the capac itor un its urt her contributes to the long term high reliability and perormance o the CPB. Electromagnetic Unit (EMU) The volt age divider and the electrom agnetic unit are connected by internal bushings, which is necessary or applications with high accuracy. The EMU has double-enamelled co pper windings and an iron core assembled with high quality magnetic core steel and is oil impregnated and mounted in a hermetically sealed aluminum tank with mineral oil illing. The primary winding is divided into a main part , an d a set o externally adjustable connected trimming windings. The nominal intermediate voltage is approximately 22/ √3 kV. The EMU inco rporates an i nductive react or, connect ed in series between the voltage divider and the high voltage end o the primary winding to compensate or the shit in phase angle caused by the capacitive reactance o the CVD. This inductive reactance is tuned individually on each transormer to achieve the required accuracy. For special applications, such as HVDC stations, measurement o harmonics, etc an alternative EMU is available without a separate compensating reactor. For this special type o EMU the unction o the compensating reactor and primary winding o the intermediate transormer are combined into one device. This arrangement gives additional advantages such as a wider requency operating range and urther improvement in the transient response. This special type o EMU is limited to lower burden requirements.

8

Climate Thes e transorm ers are desig ned or, and are inst alle d in widely varying conditions, rom arctic to desert climates, on every continent. Ferro-resonance The low indu ctio n, combined with an e icient dampi ng circuit, gives a sae and stable damping o erro-resonance at all requencies and voltages up to t he rated voltage actor; see page 40. Life time The low voltage stress w ithi n the capacitor elemen ts ensures a sae product with an expected service lie o more than 30 years. The long t erm reliability and perormance is urther ensured by the state o the art, automated manuacture and processing o the capacitor elements and units.

1

2

Transient properties The high intermediate volt age and high capacitanc e res ult in good transient properties. Adjustme nt The adjustment windings o r ra tio adjustme nt are acces sible in the terminal box, under a sealed cover. Power Line Carrier (PLC) The CPB is desig ned with the comp ensating react or connected on the high voltage side o the primary winding, providing the option o using higher requencies (> 400 kHz) or power line carrier transmission. Stray capacitance The design with the compensatin g rea ctor on the high volt age side o the main winding ensures less than 200 pF stray capacitance, which is the most stringent requirement in the IEC standard or carrier properties. Stability The CPB has a hi gh Q uality Fact or a s a resul t o the compa ratively high capacitance combined with the high intermediate voltage. The Quality Factor = C equivalent x U 2intermediate is a measure o the accuracy stability and the transient response. The higher this actor, the better the accuracy, and the better the transient response. Capacitor Voltage Divider

10

9

4

3

6

5

11 7

12

Electromagnetic unit 4

Oil level glass

5

C om pens at ing react or

1

Expansion system

6

Ferro-resonance damping circuit

2

C apac ito r elem ents

7

Primary and secondary windings

3

Intermediate voltage bushing

9

Gas cushion

8

Primary terminal, lat 4-hole Al-pad

11

Terminal box

10

Low voltage terminal (or carrier requency use)

12

Core Buyer’s Guide | Outdoor Instrument Transormers 13

CCA and CCB Design eatures and advantages

ABB’s coupling capacit ors are inte nded for connection between phase and ground in networks with isolated or grounded neutral. Application ABB oers a worl d-cl ass coupling capacito r wi th s uperior properties or PLC application as well as iltering and other general capacitor applications. ABB’s coupling capacitors (designated CCA and CCB) are intended or connection between phase and ground in high voltage networks with isolated or grounded neutral. The design corresponds to the requirements o IEC 60358 and all national standards based on this standard. Special designs to meet other standards and customer speciications are also available. Due to the design o the capacitor units, described below, the coupling capacitor elements are combining both low voltage stress and high stability to temperature variations. Difference of CCA and CCB The design o t he CCA and CCB is ba sically identical howev er the CCB has a larger diameter with space or larger capacitor element windings making it capable o extra high capacitance. Thus the coupling ca pacit or with standard capacita nce is called CCA and the coupling capacitor with extra high capacitance is called CCB.


Capacitor design The coupling capacito r co nsis ts o one or t wo c apaci tor unit s, assembled on top o each other. Each unit contains a large number o series-connected, oil-insulated capacitor elements. The unit s are co mpletely ill ed with synt heti c oi l, w hich is kept under a slight overpressure by the design o the expansion system. O-ring seals are used throughout the design. The capacito r in sulators an d elemen ts are desig ned with respect to the same demands as or the capacitor part o revenue metering CVT and thus also share the same conservative design philosophy. This conservative philosophy results in a design with low voltage stress that makes the coupling capacitors capable o handling a voltage actor up to 1.9/8hrs although this is not required by the IEC coupling capacitor standard. Their active component consists o aluminium oil, insulated with paper/polypropylene ilm, impregnated by a PCB-ree synthetic oil which has better insulating properties than normal mineral oil and is required or the mixed dielectric. Due to its unique proportions between paper and polypropylene ilm this dielectric has proven itsel virtually insensitive to temperature changes.

Climate Thes e co upling capac itor s are design ed or being install ed in widely varying conditions, rom arctic to desert climates, on every continent.

1

2 Life time The low voltage stress w ithi n the capacitor elemen ts ensures a sae product with an expected service lie o more than 30 years.

Power Line Carrier (PLC) The CCA and CCB a re design ed or use with in t he entire power line carrier transmission requency range rom 30 kHz to 500 kHz.

3

Capacitor Voltage Divider CCA or CCB 1

Primary terminal, lat 4-hole Al-pad

2

Expansion system

3

C apac ito r elem ents

4

Rating plate

5

L- (low voltage) terminal / Ground clamp

6

Support Insulators (mainly or PLC use)

4 5 6



IMB 36-800 kV Tank type current transormer

For revenue metering and protection in high voltage networks, the oil-paper insulated current transformer IMB is the most sold transformer in the world.

Brief performance data Installation

Outdoor

− Designed for widely shifting conditions, from polar to desert climate − Flexible tank type design allows large and/or many cores

Design

Tank (Hair pin) type

Insulation

Oil-paper-quartz

Highest voltage for equipment

36-765 kV

Max primary current

Up to 4 000 A

Short-circuit current

Up to 63 kA/1 sec

Insulators

Porcelain

The unique quartz filling minimizes the quantity of oil and provides a mechanical support to the cores and primary winding. Due to the low center of gravity the IMB is very suitable for areas with high seismic activity. From international studies we can see that the IMB design is a reliable product (failure rate more than 4 times lower than average) with no need for regular maintenance.

On request silicon rubber (SIR) Creepage distance

≥ 25 mm/kV

(Longer on request) Service conditions Ambi ent temp eratu re

-40 °C to +40 °C (Others on request)

Design altitude

Maximum 1000 m (Others on request)



Material All external m etal sur aces are m ade o an a luminum alloy, resistant to most known environment actors. Bolts, nuts, etc. are made o acid-proo steel. The aluminum suraces do not normally need painting. We can, however, oer anodized aluminum or a protective paint.

Maintenance The main tena nce requiremen ts are s mall , as IMB is h ermetically sealed and designed or a service lie o more than 30 years. Normally it is suicient to check the oil level and that no oil leakage has occurred. Tightening o the primary connections should be checked occasionally to avoid overheating.

Creepage distance As standard, IMB is oered with creepage distance ≥ 25 mm/kV. Longer creepage distance can be provided on request.

A more detailed check is recom mended ater 20-25 years o service. A manual or conditional monitoring can be supplied on request. This gives urther guarantees or continued problem-ree operation.

Mechanical stability The mechanic al s tability gi ves sui cient saet y margins or normal wind loads and terminal orces. Static orce on primary terminal may be up to 6 000 N in any direction. The IMB will also withstand most cases o seismic stress. Rating plates Rating plates o stainless steel with engraved text and the wiring diagram are mounted on the cover o the t erminal box. Transport - storage The IMB 36 - 145 is n orma lly transpor ted (3-p ack) and stored vertically. I horizontal transport is required this must be stated on the order. The IMB 170 - 8 00 is packed o r ho rizo ntal transpor t (1-pack). Long-term storage o more than six months should preerably be made vertically. I t his is not practical please contact ABB. Arrival inspecti on - asse mbly Please check the packaging and contents with regard to transport damage on arrival. In the event o damage to the goods, contact ABB or advice beore urther handling o the goods. Any damage should be documented (photographed). The tran sor mer must be assembled on a lat sur ace. An uneven surace can cause misalignment o the transormer, with the risk o oil leakage. Assembly in stru ctio ns are provided w ith each delivery.


The methods and the scope o the checks depend great ly on the local conditions. Measurements o the dielectric losses o the insulation (tan delta-measurement) and/or oil sampling or dissolved gas analysis are recommended check methods. Maintenance instructions are supplied with each delivery. Oil sampling This is norm ally done thro ugh the oil- illing term inal. I required, we (ABB, HV Components) can oer other solutions and equipment or oil sampling. Impregnation agent Oil o type Nynäs Nytro 10 XN (according to IEC 60296 grade 2) is ree o PCB and other heavily toxic substances and has a low impact on the environment. Disposal Ater s eparatin g the o il a nd quartz the o il can be burned in an appropriate installation. Oil residue in the quartz can be burnt, whereater the quartz can be deposited. The disposal shou ld be carrie d out in ac cordance with local regulatory requirements. The porce lain can, ater it ha s been c rush ed, be used as landill. The metals used in t he t ransorm er c an be recycle d. To recycle the aluminum and copper in the windings, the oil-soaked paper insulation should be burnt.

Primary terminals IMB 36 – 800 is as standard equipped with aluminum bar terminals, suitable or IEC and NEMA speciications. Other customer speciic solutions can be quoted on request.

4 1

0 5

40

20

0 4

5 3 1

Maximum static and dynamic orce on the terminal is up to 6 000 and 8 400 N respectively, depending on type o IMB. Maximum torsional moment is 1 000 Nm. 100

75

Secondary terminal box and secondary terminals The tran sormer is e quipped w ith a secondary term inal box, protection class IP 55, according to IEC 60529. This box is equipped with a detachable, undrilled gland plate, which on installation can be drilled or cable bushings. The term inal box is provided with a drain. The standard terminal bo x ca n accommodate up t o 30 terminals o the type Phoenix UK10N or cross section <10 mm2. Other types o terminals can be quoted on request.

Standard for IMB 36-245

A larger terminal box with space or more seco ndary terminals or other equipment, such as heater or protective spark gaps, is supplied when needed.

Standard for IMB 245-800

Ground (earth) terminal The tran sormer is n orma lly equipped with a gro und clamp with a cap o nickel-plated brass, or conductors 8-16 mm (area: 50-200 mm2 ), which ca n be move d to eith er m ount ing oot. A stain less stee l bar, 80 x 145 x 8 mm, can be quoted on request. The bar can be supplied drilled according to IEC or NEMA standards.

IMB 36-245

IMB 245-420

The ground t ermi nal or the seco ndary windings is located inside the terminal box.

IMB 420-550

IMB 420-800



Maximum continuous primary current and short-time current Type

Normal current

Cooling flanges

Cooler

Maximum short-time

Maximum short-time

Maximum dynamic

current 1 sec

current 3 sec

current

A

A

A

kA

kA

kA pe ak va lue

2400

-

3150

63

40

170

1200

-

1500

40

40

108

400

-

-

31.5

18

85

150

-

-

16

9

43

IMB 245

1600

-

2000

40

40

108

IMB 245

2000

2400

3150

63

63

170

1000

1200

1500

40

40

108

300

-

-

31.5

18

85

150

-

-

16

9

45

2500

-

3150

63

63

170

1200

-

1500

40

40

108

2500

-

4000

63

40

170

1200

-

2000

40

40

108

-

-

4000

63

40

170

IMB 36-170

IMB 300-420 IMB 420-550 IMB 800

Other types o primary conductors can be supplied on request Maximum continuous primary current = load actor x primary rated current related to a daily mean temperature that does not exceed 35 Primary winding can be designed with reconnection alternative between two or three primary rated currents with a ratio o 2:1 or 4:2:1

C

o

Test Voltages IEC 60044-1 Type

Highest voltage for

AC v olta ge t est,

Lightning impulse

Switching impulse

RIV test

Max RIV

equipment (Um)

1 minute, wet/dry

1.2/50 μs

250/2500 μs

voltage

level

kV

kV

kV

kV

kV Max.

μV

IMB 72

72,5

140/140

325

-

-

-

IMB 123

123

230/230

550

-

78

2500

IMB 145

145

275/275

650

-

92

2500

IMB 170

170

325/325

750

-

108

2500

IMB 245

245

460/460

1050

-

156

2500

IMB 300

300

-/460

1050

850

191

2500

IMB 362

362

-/510

1175

950

230

2500

IMB 420

420

-/630

1425

1050

267

2500

IMB 550

550

-/680

1550

1175

334

2500

IMB 800

765

-/975

2100

1550

486

2500

Test voltages above applies a t ≤1000 meters above sea level

Test Voltages IEEE C 57.13 Type

Highest system

Power frequency

AC-t est Wet,

Lightning impulse

Chopped

RIV test

Max RIV

voltage

applied voltage test

10 sec

(BIL) 1.2/50 μs

impulse

voltage

level 1)

kV

kV

kV

kV Max.

kV

kV

μV

IMB 36

36.5

70

70

200

230

21

125

IMB 72

72.5

140

140

350

400

42

125

IMB 123

123

230

230

550

630

78

250

IMB 145

145

275

275

650

750

92

250

IMB 170

170

325

315

750

865

108

250

IMB 245

245

460

445

1050

1210

156

250

IMB 362

362

575

-

1300

1500

230

250

IMB 550

550

800

-

1800

2070

334

500

1)

Test procedure according to IEC. Test voltages above appli es at ≤1000 meters above sea level


Nominal flashover and creepage distance (Porcelain) Normal creepage distance 25 mm/kV

Long creepage distance 31 mm/kV

(Min. values) Type

Flashover

(Min. values)

Total creepage

Protected creepage

Flashover

Total creepag e

Protected creepage

distance

distance

distance

distance

distance

distance

mm

mm

mm

mm

mm

mm

IMB 36

-

-

-

630

2248

1020

IMB 72

-

-

-

630

2248

1020

IMB 123

1120

3625

1400

1120

4495

1860

IMB 145

1120

3625

1400

1120

4495

1860

-

-

-

1330

5270

2200

-

-

-

1600

6525

2740

IMB 245

1915

6740

2850

2265

8490

3685

IMB 300

2265

8250

3495

2715

10430

4645

IMB 362

2715

10430

4645

3115

12480

5630

IMB 420

3115

12480

5630

3635

14325

6465

IMB 420

3220

11550

4800

3820

15280

6870

IMB 550

3820

15280

6870

4715

18944

8340

IMB 800

5220

18624

7950

-

-

-

IMB 170 IMB 170

1)

Note: Long creepage distance eects dimensions A, B, D (see dimensions) 1) 38 mm/kV or 170 kV system voltage and 45 mm/kV or 145 kV system voltage is available.

Standard accuracy Classes. Current transormers o the type IMB are designed to comply with the ollowing accuracy classes. Other classes can be quoted on request. IEC 60044 – 1

IEEE C57.13 / IEEE C57.13.6

Class

Application

Class

Application

0.2

Precision revenue metering

0.15


0.2S


0.3

Standard revenue metering

0.5

Standard revenue metering

0.6

Metering

0.5S


1.2

Metering

1.0

Industrial grade meters

C100

Protection

3.0

Instruments

C200

Protection

5.0

Instruments

C400

Protection

5P

Protection

C800

Protection

5PR

Protection

10P

Protection

10PR

Protection

PX

Protection

TPS

Prote ction

TPX

Prote ction

TPY

Prote ction



Burdens Our current transormer IMB has a very lexible design allowing large burdens. However, it is important to determine the real power consumption o connected meters and relays including the cables. Unnecessary high burdens are oten speciied or modern equipment. Note that the accuracy or the measuring core, according to I EC, can be outside the class limit i the actual burden is below 25% o the rated burden. Over-voltage protection across primary winding The volt age drop acros s the prima ry windi ng o  a curre nt transormer is normally very low. At rated primary current it is only a couple o volts and at short-circuit current a ew hundred volts.


I a high requency current or voltage wave passes through the primary winding can, due t o the winding inductance, high voltage drops occur. This is not dangerous or a current transormer with a single-turn primary winding, but or multiturn primaries may it lead to dielectric puncture between the primary turns. It is thereore ABB’s practice to protect the primary winding in multi-turn designs with a surge arrester connected in parallel with the primary. Standard design o IMB current transormer is without surge arrester. Surge arrester o type POLIM – C 1.8 will however be included when needed.

IMB 36-800 kV Design and shipping data

Dimensions A

B

C

D

Total

Height to

Ground

Flashover

Length across

Dimension of

height

primary

level

distance

primary terminal

bottom tank

terminal

height

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

2000

1635

840

630

475

270

410

460

60

410

Type

IMB 36

1)

IMB 72

1)

E

F

G

H

J

K

Height to

Spacing for

terminal box mounting holes

bushing

2000

1635

840

630

475

270

410

460

60

410

IMB 123

1)

2490

2125

840

1120

475

270

410

460

60

410

IMB 145

1)

2490

2125

840

1120

475

270

410

460

60

410

IMB 170

1)

2700

2335

840

1330

475

270

410

460

60

410

IMB 245

1)

3320

2950

860

1915

439

270

410

460

60

410

IMB 245

2)

3640

3050

965

1915

439

270

395

885

485

450

IMB 300

2)

4150

3405

965

2265

491

270

395

885

485

450

IMB 362

2)

4600

3855

965

2715

491

270

395

885

485

450

IMB 420

2)

5000

4255

965

3115

491

270

395

885

485

450

IMB 420

3)

5505

4760

1365

3220

491

320

380

1040

783

500

IMB 420 4)

5580

4790

1390

3220

526

360

410

1105

805

600

IMB 550 3)

6105

5360

1365

3820

491

320

380

1040

783

500

IMB 550 4)

6180

5390

1390

3820

526

360

410

1105

805

600

IMB 800

8540

6790

1390

5220

526

360

410

1105

805

600

1)

4)

Standard tank,

2)

Hexagonal tank,

3)

Octagon tank,

4)

HV tank E

IMB 36 - 170

D A B

C

5 2 J

K

F

G

K

H

K



IMB 245

1)

E

A D B

IMB 245

2)

E

C 5 2

J

K

K

F

G

D

K

H

A B

K

C J 25

G

K

H K

F

G


IMB 300 - 420

2)

E

IMB 420 - 550

3)

E

A

D

B

C J

D

25

B K

A

K H K

F

G

C J

30 K

K

K H

F

G



IMB 420 - 550

4)

E

D A B

C J

30

K

K

K

H

F


G

IMB 800

4)

E

A D

B

C J

30

K

K

K

H

F

G



Changes, special design of dimensions A, B , C

A

A

Increased tank height

Cooling flange

Cooler

Three primary ratios

mm

mm

mm

mm

Standard tank

210

-

255

0

Hexagon tank

210 or 420

210

35 / 240 * )

-

Octagon tank

150

-

440

-

200 or 400

-

400 **

Tank-type

HV tank

A

)

-

* 35 mm or IMB 245, 240 mm or IMB 300 - 420 ** ) 400 mm or IMB 420 - 550, IMB 800 is always equipped with cooler )

Shipping data for standard IMB Type

Net weight Incl. oil

Oil

Shipping weight

Shipping dimensions

Shipping volume

1-pack/3-pack

1-pack/3-pack

1-pack/3-pack

kg

kg

kg

LxWxH m

m3

IMB 36 1)

420

45

550 / 1630

2.26x0.6x0.94 / 1.67x0.8x2.21

1.3 / 3

IMB 72 1)

420

45

550 / 1630

2.26x0.6x0.94 / 1.67x0.8x2.21

1.3 / 3

IMB 123 1)

490

50

650 / 1850

2.75x0.6x0.94 / 1.67x0.8x2.7

1.5 / 3.6

IMB 145 1)

490

50

650 / 1850

2.75x0.6x0.94 / 1.67x0.8x2.7

1.5 / 3.6

IMB 170

1)

550

55

700 / -

2.96x0.6x0.94 / -

1.7 / -

IMB 245

1)

750

80

970 / -

3.48x0.6x0.94 / -

2.0 / -

IMB 245

2)

1100

110

1390 / -

3.82x1.06x1.02 / -

4.2 / -

IMB 300

2)

1400

170

1815 / -

4.76x1.08x1.10 / -

5.7 / -

IMB 362

2)

1500

180

1915 / -

4.76x1.08x1.10 / -

5.7 / -

IMB 420

2)

1600

190

2050 / -

5.21x1.08x1.10 / -

6.2 / -

IMB 420

3)

2500

300

3120 / -

5.82x1.23x1.22 / -

8.8 / -

IMB 420

4)

2600

290

3220 / -

5.74x1.06x1.47 / -

9.0 / -

IMB 550

3)

2800

330

3480 / -

6.42x1.23x1.22 / -

9.7 / -

IMB 550

4)

3500

510

4180 / -

6.34x1.06x1.47 / -

9.9 / -

IMB 800

4)

4200

670

6400 / -

8.71x1.06x1.47 / -

13.5 / -

1) 2) 3) 4)

Standard tank Hexagonal tank Octagon tank HV tank

IMB 36 - 145 is normally packed or vertical transport in a 3-pack. Vertical t rans port in a 1-pack can be quoted o n request . IMB 170 - 800 is always packed or horizontal transport in 1-pack. Additional weights Weight indicated in table above is or standard IMB. Additional weights may occur de pendi ng o n requirement s an d co nig uration.


IMB 36-800 kV Reconnection

General The current tran sormer can be re connecte d to adapt or varying currents. The IMB type can be delivered in a coniguration that permits reconnecttion either on primary or secondary side, or a combination o the two.

The advantag e o primar y reconnection is that the ampereturns remains the same and thereby the output (VA). The disadvantage is that the short-circuit capability may be reduced or the lower ratio(s).

Primary reconnection Two primary ratios for two turns

Two primary ratios, connected for one turn

C1 C2

C1

C2

Connection above is for the lower current

Connection above is for the higher current

Secondary Reconnection

P1

P2 S1

S2

S3

The unus ed t aps on the recon nect able secondary wi nding must be let open. I windings/cores are not used in a current transormer they must be short-circuited between the highest ratio taps (e.g. S1 - S5) and shall be grounded.

S4

S5

Caution! Never leave an unused secondary winding open. Very high- induced voltage s are generate d across the terminals and both the user and the transormer are subjected to danger.



EMF 52-170 kV Inductive voltage transormer

For revenue metering and protection in high voltage networks, the oil-paper insulated voltage transformer EMF is the most sold inductive voltage transformer in the world. − Designed for widely shifting conditions, from polar to desert climate. − Low flux in the core at operating voltage gives a wide safety margin against saturation and ferro-resonance. The unique quartz filling minimizes the quantity of oil and allows a simple and reliable expansion system.


Outdoor

Design

Inductive type

Insulation

Oil-paper-quartz


52-170 kV

Voltag e fac tor (Vf)

Up to 1.9/8 hrs

Insulators

Porcelain On request silicon rubber (SIR)

Creepage distance

≥ 25 mm/kV



Design altitude



EMF 52-170 kV Inductive voltage transormer

Material EMF 52-170: All external metal suraces are made o an aluminum alloy, resistant to most known environment actors. Bolts, nuts, etc. are made o acid-proo steel. The aluminum suraces do not normally need painting. We can, however, oer a protective paint or anodized aluminum. Creepage distance EMF is available as standard with normal or long creepage distances according to the table on page 34. Longer creepage distances can be quoted on request. Mechanical stability The mechanic al s tability gi ves a su ici ent saety marg in  or normal wind loads and stress rom conductors. EMF can also withstand high seismic orces. Rating plates Rating plates o stainless steel, with engraved text and wiring diagrams are mounted on the transormer enclosure. Arrival inspecti on - asse mbly Please check the packaging and contents with regard to transport damage on arrival. In the event o damage to the goods, contact ABB or advice, beore urther handling o the goods. Any damage should be documented (photographed). The tran sor mer must be assembled on a lat sur ace. An uneven surace can cause misalignment o the transormer, with the risk o oil leakage.

Normally it is only necessary to check that the o il level is correct, and that no oil leakage has occurred. The transormers are hermetically sealed and thereore require no other inspection. A comprehens ive inspecti on i s recomm ended ater 30 ye ars. This provi des increased saety and cont inued pro blem-ree operation. The inspection methods and scope very signiicantly depending on the local conditions. As the primary winding is not capacitive graded, the measurement o tan-delta gives no signiicant result. Thereore oil sampling or dissolved gas analysis is recommended or checking the insulation. Maintenance instructions are supplied with each delivery. ABB, High Voltag e Pro duct s is at your dispo sal or disc ussions and advice. Impregnation agent Oil o type Nynäs Nytro 10 XN (according to IEC 296 grade 2) is ree o PCB and other heavily toxic substances and has a low impact on the environment. Disposal Ater s eparatin g the o il a nd quartz the o il can be burned in an appropriate installation. Oil residue in the quartz can be burnt, whereater the quartz can be deposited. The disposal shou ld be carrie d out in ac cordance with local regulatory requirements.

Assembly in stru ctio ns are provided w ith each delivery.

The porce lain can, ater it ha s been c rush ed, be used as landill.

Maintenance Maintenance requirements are insigniicant as EMF is designed or a service lie o more than 30 years.

The metals used in t he t ransorm er c an be recycle d. To recycle the copper in the windings, the oil-soaked paper insulation should be burnt.


Primary terminals EMF 52-170 is as standard equipped with an aluminum bar terminal, suitable or IEC and NEMA speciications. The primary term inal is a vo ltag e terminal and should thereore , according to standards, withstand static orce o 1 000 N or U m (system voltage) 123 – 170 kV and 500 N or lower voltages. Withstand dynamic orce is 1 400 and 700 N respectively.

EMF 52-170

Secondary terminal box and Secondary terminals The term inal box or the seco ndary windin g terminal is moun ted on the transormer enclosure. As standard the terminal box is manuactured o corrosion resistant, cast aluminum. This box is equipped with a detach able, undrille d gl and plate, which on installation can be drilled or cable bushings. It can, on request, be quoted with cable glands according to the customer’s speciication. EMF 52-84

The term inal box is provided with a drain. EMF 52-170: Secondary terminals accept wires with crosssections up to 10 mm2. Protection class or the terminal box is IP 55.

EMF 123-170

Ground (Earth) connections The tran sormer is n orma lly equipped with a ground term inal with a clamp o nickel-plated brass. For conductors Ø=5-16 mm (area 20-200 mm2 ), s ee t he  igure . A stain less stee l bar, 80 x 145 x 8 mm, can be quoted on request. The bar can be supplied drilled according to IEC or NEMA standards. Grounding o the secondary circuits is made inside the terminal box.

EMF 52-84

EMF 123-170


EMF 52-170 kV Design data

Nominal flash-over and creepage distance N or mal p orcel ai n ( min . nom . valu es) Type

Flash-over

P orce lai n w it h l on g c re epa ge di st anc e ( min . nom . valu es)

Creepage

Protected creepage

Flash-over

Creepage

Protected creepage

distance

distance

distance

distance

distance

distance

mm

mm

mm

mm

mm

mm

EMF 52

630

2248

1020

EMF 72

630

2248

1020

EMF 84

630

2248

1020

Others on request.

EMF 123

1200

3625

1400

Normally insulator or the nearest higher voltage.

EMF 145

1200

3625

1400

EMF 170

1330

5270

2200

Test voltages IEC 60044-2, (SS-EN 60044-2) Type

Highest voltage for

1min

LIWL

RIV test

wet/dry

1.2/50 μs

voltage

kV

kV

kV

kV Max.

μV

EMF 52

52

95

250

30

125

EMF 72

72.5

140

325

46

125

EMF 84

84

150

380

54

125

EMF 123

123

230

550

78

2500

EMF 145

145

275

650

92

2500

EMF 170

170

325

750

108

2500

equipment

RIV level

(Um)

Test voltages above are valid or alti tudes ≤1000 meters above sea level.

Test voltages IEEE C 57.13 (CAN 3 – C 131 – M83) Type


AC t est

AC t est

BIL

(Um)

dry, 1 min

wet, 10 sec

1.2/50 μs

kV

kV

kV

kV Max.

EMF 52

52

95

95

250

EMF 72

72.5

140

175

350

EMF 123

121 (123)

230

230

550

EMF 145

145

275

275

650

EMF 170

169 (170)

325

315 (325)

750

Values within brackets re er to CAN 3-C13.1- M79. Test voltages abo ve are val id or al titudes ≤ 1000 meters above sea level.


Secondary voltages and burdens according to IEC Standards International IEC 60044-2 Swedish Standard SS-EN 60044-2 All nationa l st andards based on IEC Rated data at 50 or 60 Hz, Voltage factor 1.5 or 1.9 The tran sormer norm ally has one or t wo w indings or cont inuous load and one residual voltage winding. Other conigurations can be quoted according to requirements.

Standard accuracy classes and burdens Acco rding to IE C 50 VA class 0.2

100 VA class 3P

100 VA class 0.5

100 VA class 3P

150 VA class 1.0

100 VA class 3P

For lower or higher burdens please contact us.

The standards state as standard values for rated voltage factor 1.5/30 sec. for effectively earthed systems, 1.9/30 sec. for systems without effective earthing with automatic earth fault tripping and 1.9/8 hrs for systems with insulated neutral point without automatic earth fault tripping.

Since the residual voltage winding is not loaded except during a ault, the eect o its load on the accuracy o the other windings is disregarded in accordance with IEC. Please note that modern meters and protection require much lower burdens than those above, and to achieve best accuracy you should avoid speciying burdens higher than necessary; see page 6.

Secondary voltages and burdens according to IEEE and CAN3 Standards Amer ican IEEE C57. 13-1993 Canadian CAN3-C13-M83

Standard accuracy classes and burdens Acco rding to IE EE an d CA N3 0.3 WXY

0.6 WXYZ

1.2/3P WXYZ

For lower or higher burdens please contact us.

Rated data at 60 Hz, Voltage factor 1.4 The tran sormer norm ally has one or two secondary wi ndings or continuous load (Y-connected). Example o turns ratios: 350-600:1 means one secondary winding with the ratio 350:1 and one tertiary winding ratio 600:1 350/600:1:1 means one secondary winding and one tertiary winding both with taps or ratios 350:1 and 600:1

Rated burdens: W = 12.5 VA power actor 0.1 X = 25 VA pow er  acto r 0. 7 Y = 75 VA power  acto r 0.85 YY = 150 VA power  acto r 0. 85 Z = 200 VA power actor 0.85 ZZ = 400 VA power actor 0.85

Protective classes according to CAN (1P, 2P, 3P) can be quoted on request. Voltag e a ctor 1.9 according to CAN can be qu oted on request.


EMF 52-170 kV Design data

Voltage transformers EMF Type

A

B

C

D

E

F

Total

Flash-over

Height to

Fixing hole

Ground level

Expansion

height

distance

terminal box

dimensions

height

vessel diameter

mm

mm

mm

mm

mm

mm

EMF 52

1464

630

114

335 x 335

540

324

EMF 72

1464

630

114

335 x 335

540

324

EMF 84

1464

630

114

335 x 335

540

324

EMF 123

2360

1200

65

410 x 410

760

416

EMF 145

2360

1200

65

410 x 410

760

416

EMF 170

2490

1330

65

410 x 410

760

416

F

F

135

B

A

B A

E E

C C

D

D

20 mm

EMF 52-84 Note: Primary terminal will be mounted at site


20 mm D

EMF 123-170 Note: Primary terminal will be mounted at site

D

EMF 52-170 kV Shipping data

Voltage trans formers EMF Type

Net weight incl. oil

Oil

Porcelain insulator

Shipping weight

Shipping dimensions

Shipping volume

3-pack

3-pack, L x W x H

kg

kg

kg

m

3-pack m3

EMF 52

300

40

1040

1.6 x 0.9 x 1.7

2.5

EMF 72

300

40

1040

1.6 x 0.9 x 1.7

2.5

EMF 84

300

40

1040

1.6 x 0.9 x 1.7

2.5

EMF 123

570

80

1975

2.0 x 1.0 x 2.6

5.2

EMF 145

570

80

1975

2.0 x 1.0 x 2.6

5.2

EMF 170

610

83

2130

2.0 x 1.0 x 2.7

5.4

EMF 52 - 84 must not be tilted more than 60° during transport and storage. Warning notes are placed on the transormer’s rating plate. EMF 123 - 170 is normally packed or vertical transport (3-pack). However, it can be t ransported in a horizontal position and is available on request or horizontal transport (1-pack).



CPB 72-800 kV Capacitor voltage transormer

The CPB is designed for revenue metering and protection in high voltage networks. The high quality, state of the art, automated manufacture of the capacitor elements provides consistent quality to ensure long term reliability and performance. Due to the optimized proportions of the mixed dielectric the capacitor elements are subject to low electrical stress with high stability under extreme temperature variations. The CPB is designed for a wide range of shifting conditions including polar and desert climates.


Outdoor

Design

Capacitor type, complies with IEC and ANSI standards

Insulation CVD

Alum inum -oi l / paper / polypropylene-ilm, synthetic oil

EMU

Paper - mineral oil


72 - 765 kV

Voltag e fac tor (Vf)

Up to 1.9/8 hrs

Insulators

Porcelain / Silicon rubber (SIR)

Creepage distance

≥ 25 mm/kV (Longer on request)

Service conditions Ambi ent temp eratu re

-40 °C to +40 °C (Other on request)

Design altitude

Maximum 1 000 m (Other altitude on request)



Material All external m etal sur aces are m ade o an a luminum alloy, resistant to most known environment actors. Bolts, nuts, etc. are made o acid-proo stainless steel. The aluminum suraces do not normally need painting. We can however oer anodization or protective paint, (normally light gray). Creepage distance As sta nda rd t he CPB is oered with c reep age dis tan ce 25 mm/kV. Longer creepage distances can be oered on request. Silicone Rubber Insulators The complete CPB ra nge is a vailable with sili cone rubber insulators. Our SIR insulators are produced with a patented helical extrusion molding technique, which gives completely join t-ree i nsul ator s wi th outstan ding perormance. All CVTs with this type o insulators have the same high creepage distance, 25 mm/kV phase-phase, as porcelain. Mechanical stability The mechanic al s tability gi ves sui cient saet y margin or normal wind loads and conductor orces. For all combinations except CPB(L), it is possible to mount line traps on top o the capacitor divider. The CPB will also withstand most cases o seismic stress. Ferroresonance damping circuit All CVTs need to inco rporate some kind o  e rro-reson ance damping, since the capacitance in the voltage divider, in series with the inductance o the transormer and the series reactor, constitutes a tuned resonance circuit. This circu it can be brought into resonance, t hat may satu rate the iron core o the transormer by various disturbances in the network. This phenomenon can also overheat the electromagnetic unit, or lead to insulation breakdown. The CPB use a damping ci rcuit , connected in parallel with one o the secondary windings (see diagram on page 49). The damping circuit consists o a reactor with an iron core, and an oil-cooled resistor in series. Under normal use, the iron core o the damping reactor is not saturated, yielding a high impedance, so that practically no current is lowing through this circuit.


The damping circu it has two bridged terminals; d1- d2, behind a sealed covering hood in the terminal box. In particular cases, and ater agreement, this bridge can be opened, to check that the circuit is intact, by resistance measurement. Ratio adjustment The tran sormer o the electromagne tic unit has ive adjustment windings on the earth side o the primary winding. The numbers o turns o these windings have been chosen so that the ratio can be adjusted ±6.05% in steps o 0.05%. These windings are externally accessible, behind a sealed covering hood in the secondary terminal box. The CVT is delivered adjusted or a speciied burden and class, and normally no urther adjustment is necessary. I needed, the adjustment windings enable exchange o the voltage divider on site, and readjustment o the transormer or the new combination o voltage divider/electromagnetic unit. Rating plates Corrosion resistant rating plates with text and wiring diagrams are used. General data can be ound on the door o the terminal box, connection diagrams and secondary winding data on the inside. Each capacitor unit is marked with measured capacitance at the top. Potential Grounding Switch A po tential grounding sw itch can be included in t he EMU. Power Line Carrier (PLC) As an o ptio n al l CVTs can be equipped with Carri er A ccessories. Modern PLC equipment are adapted or a wide range o coupling capacitors. No speciic capacitance is required. Only minimum capacitance must be speciied due to choice o requency.

Primary terminal The CPB is n orma lly delivered with a l at 4 -hole a luminum pad, suitable or bolts with C-C rom 40 to 50 mm and or connecting normal aluminum cable clamps. Other primary terminals can be oered on request, such as a round aluminum studs, Ø=30 mm.

4 1

40

20

0 0 5 4

5 3 1

Test orces at t he primary term inal as per I EC 60044-5 clause 7.6 Highest voltage for

Static withstand test load F R (N)

equipment Um (kV)

CPB(L)

CPB

72.5 to 100

500

2500

123 to 170

1000

3000

245

1250

2500

300 to 362

-

1250

≥ 420

-

1500

100

75

Secondary terminal box and secondary terminals The tran sormer is e quipped w ith a secondary term inal box, protection class IP 55. This box is equipped with a detachable, undrilled gland plate, which on installation can be drilled or cable bushings. It is also provided with a drain. The terminal box can also be equipped with uses or micro circuit breakers. The seco ndary terminals norm ally cons ist o P hoen ix U K10N standard terminal blocks or wire cross-section 10 mm². In the t erminal box are also terminals (d1-d2) or damping circuit, terminals or the adjustment windings (B1 to B11) and the capacitor low voltage terminal ”L” (or power line carrier equipment).

Standard terminal box The transformer can also be equipped with larger terminal box with space for power line carrier equipment.

Terminals d1 - d2 and B1 - B11 are i ntended or act ory setting s and thus located behind a sealed covering hood to prevent inadvertent reconnection. The ”L” term inal must al ways be g round ed i no carrier equipment is connected.

Ground terminals The tran sormer is n orma lly equipped with a ground clamp wi th a cap o nickel-plated brass or IEC conductors 8 – 16 mm (area 50 – 200mm 2 ) an d or ANSI conductors # 2 SOL to 500 MCM, which can be moved to either mounting oot. A stainless steel bar, 80 x 145 x 8 mm, can be quoted on request. The bar can be supplied drilled according to IEC or NEMA standards. Grounding terminals or the secondary circuits are placed inside the terminal box.


CPB 72-800 kV Installation and maintenance

Unpacking Please check the crates and their contents or damage during transportation upon receipt. Should there be any damage, please contact ABB or advice beore the goods are handled urther. Any damage should be documented (photographed). Assembly The electromagne tic unit and the capac itor vo ltag e divider are delivered as one unit or all CVTs or which only one capacitor unit is used. CVTs with higher system voltages, having more than one CVD part, are delivered with the bottom unit o the CVD assembled onto the EMU. The EMU, with th e bo ttom CV D un it s hould be installed irs t, beore the top part(s) o the CVD is (are) mounted in place. Liting instructions are included in each package. Check that the capacitor units have the same serial number (or CVDs with more than one capacitor unit). Maintenance The CPB is desig ned or a servic e lie o m ore than 30 years, and are practically maintenance-ree. We recommend however the ollowing checks and measurements.

• Control measurements of the EMU

An easily perormed test is to measure the insulation resistance in mega-ohms (max. test voltage 1 000 VDC) o the secondary windings. Since the high voltage winding o the t ransormer is not capacitively graded, a measurement o the loss angle (tan delta) will give no signiicant result. What is possible, however, is to t ake an oil sample, or gas chromatography analysis rom the electromagnetic unit to assess its condition. The tank o the electromagnetic unit can, on re quest, be equipped with a sampling valve, and we can deliver suitable sampling equipment. An easier method is to take the oil sample rom the oil-illing hole. Sampling intervals will vary, depending on service conditions; generally, no oil analysis should be necessary during the irst 20 years o service.

Environmental Aspects Impregnant Both Faradol 810 (the synthetic oil in t he voltage dividers), and Nynäs NYTRO 10 XN (the standard transormer oil in the electromagnetic unit) are ree rom PCB and other strongly harmul substances, and pose a low impact to the environment.

• Visual check

We recommend a periodic inspection, to check or oil leakages and also to inspect the insulator or collection o dirt. • Control measurements of the CVD

Since the voltage dividers are permanently sealed it is not possible to take oil samples rom them. Under normal service conditions, no noticeable ageing will occur within the capacitors (veriied by ageing tests). However discrepancies between the secondary voltages in parallel phases can be an indication o a ault in a capacitor part o one o the CVT, which is why such a comparison is recommended. In such a case a urther measurement o the capacitance value is recommended. Readings can be taken between the top and the ”L” terminal in the secondary terminal box.

Destruction Ater drain ing the oils , these can be burnt in an appropriate plant. In this respect, Faradol has similar combustion properties as normal mineral oil. The disposal shou ld be carrie d out in ac cordance with local legal provisions, laws and regulations. The porce lain can be depos ited ater it has b een crus hed. The metals in t he e lect romag neti c un it and the housing s o the voltage divider can be recycled. Aluminum parts are labeled with material speciications. In order to recycle the copper in the windings, the oil-saturated paper insulation should be burnt. The alum inum in t he c apaci tor elements , with their combi nation o oil, paper and polypropylene ilm, can be recycled ater the insulation has been burnt; the plastic ilm will not emit any harmul substances during this process.



Secondary voltage and burdens Standards IEC 60044-5 Rated data at 50 or 60 Hz, Voltage actor 1.5 or 1.9 The tran sormer norm ally has one or two windings or cont inuo us load and one eart h-a ult wind ing. Other conigurations and/or designs according to other standards (ANSI, CAN, etc) can be oered according to requirements. Approximate maximum tota l burdens in VA Measuring winding Highest class

Voltage factor 1.5* )

Voltag e fa ctor 1.9* )

CPB(L)

CPB

CPB(L)

CPB

0.2

50

100

40

80

0.5

100

200

80

200

1.0/3P T1

200

400

120

400

100

100

Earth-fault winding, irrespective of the voltage factor 3P T1/6P T1

100

100

* ) The IEC s tandards state as standard v alues or eectivel y earthed systems 1. 5/30 sec. Fo r systems w ithout ee ctive ear thing with automatic earth aul t tripping, a rated vol tage actor 1.9/30 sec. is stated. For systems with insulated neutral point without automatic earth ault tripping 1.9/8 hrs is stated.

The above va lues are t otal maximum v alues or t he s econ dary winding(s), voltage 100/ √ 3 or 110/ √3 V and one or no residual voltage winding, class 3P, intended or connection in open delta, voltage 100 or 110 (100/3 or 110/3) V. For other conigurations please consult ABB. I the transormer has more than one continuously loaded winding, possibly with dierent classes, the table above must be applied to the sum o these burdens and the highest accuracy class.

Since the residual voltage winding is not loaded except during a ault, the eect o its load on the accuracy o the other windings is disregarded in accordance with IEC. Stated values should only be considered as maximum values. Please note that modern meters and protection require much lower burdens than those above and to achieve best accuracy burdens should not be speciied higher than necessary.

Other standards Quoted on request.


CPB 72-800 kV Test voltages

Test voltages: IEC 60044-5 Type

Highest voltage

1min

LIWL

Switching impulse

PD test

Max.

RIV test

RIV level

for equipment

wet/dry

1.2/50 μs

250/2500 μs

voltage

PD level

voltage

kV

kV

kV

kV

kV

pC* )

kV Max.

CPB 72

72.5

140/140

325

-

1.2 x U m

10

-

-

CPB 123

123

230/230

550

-

1.2 x U m

10

78

≤ 2500

CPB 145

145

275/275

650

-

1.2 x U m

10

92

≤ 2500

CPB 170

170

325/325

750

-

1.2 x U m

10

108

≤ 2500

CPB 245

245

460/460

1050

-

1.2 x U m

10

156

≤ 2500

CPB 300

300

460/460

1050

850

1.2 x U m

10

190

≤ 2500

CPB 362

362

510/510

1175

950

1.2 x U m

10

230

≤ 2500

CPB 420

420

630/630

1425

1050

1.2 x U m

10

267

≤ 2500

CPB 550

525

680/680

1550

1175

1.2 x U m

10

333

≤ 2500

CPB 800

765

975/975

2100

1550

1.2 x U m

10

486

≤ 2500

(Um)

Test voltages above are valid or alti tudes ≤1000 meters above sea level. * ) 5 pC at test voltage 1.2 x Um/ √3

Other standards Quoted on request.


μV

CPB 72-800 kV Design data and dimensions

Number of capacitor units, capacitance and distances

Type

Number of

Standard

capacitor units

capacitance

Normal creepage distance 25 mm/kV

Extra long

(min. nominal values phase - phase)

creepage distance

Flashover distance Creepage distance

Protected creepage distance

For IEC test voltages Polymer/Porcelain CPB 72

1)

CPB 72

1)

CPB 72

2)

pF (+10; - 5%)

mm

mm

mm

1

18200

680/660

1813

800

1

24900

635

1813

762

1

24900

635

1813

762

mm

CPB 123

1)

1

11200

1025/1005

3075

1300

CPB 123

1)

1

15400

980

3160

1307

CPB 123

2)

1

15400

980

3160

1307

CPB 145

1)

1

9100

1235/1215

3625

1600

CPB 145

1)

1

12900

1190

3880

1634

CPB 145

2)

1

12900

1190

3880

1634

CPB 145

2)

1

20200

1400

4650

1960

CPB 170

1)

1

7800

1445/1425

4250

1786

CPB 170

1)

1

10800

1400

4650

1960

CPB 170

2)

1

10800

1400

4650

1960

CPB 170

2)

1

17000

1400

4650

1960

CPB 245

1)

1

5600

2005/1985

6125

2619

Others on request.

CPB 245

1)

1

7700

1960

6510

2723

Normally porcelain

CPB 245

2)

1

7700

1960

6510

2723

or the nearest

CPB 245

2)

2

12100

1960

6320

2560

higher voltage.

CPB 300

1)

2

6400

2380

7760

3268

CPB 300

2)

2

6400

2380

7760

3268

CPB 300

2)

2

10100

2800

9300

3920

CPB 362

1)

2

5400

2800

9300

3920

CPB 362

2)

2

5400

2800

9300

3920

CPB 362

2)

2

8500

2800

9300

3920

CPB 420

1)

2

4800

3220

10630

4356

CPB 420

2)

2

4800

3220

10630

4356

CPB 420

2)

3

8800

4200

13950

5505

CPB 550

1)

2

3700

4200

13980

5882

CPB 550

2)

2

3700

4200

13980

5882

CPB 550

2)

3

5800

4200

13950

5505

CPB 800

2)

4

4400

6060

21080

8500

1)

Lightweight oil tank,

2)

Medium oil tank,

3)

Primary teminal excluded,

4)

Valid or standard terminal box only


CPB 72-800 kV Dimensions

F

CPB 245 - 800

CPB 72 - 245

B

F

A

B

B

E

E

A

C

D

D

C

D

Note! The number o capacitor divider units can, or some voltages, be higher than in the drawings above. Please check in the table on the next page


D

Number of capacitor divider units and distances A Type

Number of

Standard

capacitor

capacitance

divider units

For IEC test

Total height

B

C

Flashover distance

Height to flange

3)

4)

D

E

Mounting hole

Ground level height

distance

Polymer/Porcelain

F Diameter expansion

Polymer/Porcelain

tank

voltages CPB 72

1)

CPB 72

1)

CPB 72

2)

pF (+10; - 5%)

mm

mm

mm

mm

mm

mm

1

18200

1580

680/660

225

335

640/650

335

1

24900

1615

635

225

335

675

355

1

24900

1690

635

305

335

750

355

CPB 123

1)

1

11200

1925

1025/1005

225

335

640/650

335

CPB 123

1)

1

15400

1960

980

225

335

675

355

CPB 123

2)

1

15400

2035

980

305

335

750

355

CPB 145

1)

1

9100

2135

1235/1215

225

335

640/650

335

CPB 145

1)

1

12900

2170

1190

225

335

675

355

CPB 145

2)

1

12900

2245

1190

305

335

750

355

CPB 145

2)

1

20200

2455

1400

305

335

750

355

CPB 170

1)

1

7800

2345

1445/1425

225

335

640/650

335

CPB 170

1)

1

10800

2380

1400

225

335

675

355

CPB 170

2)

1

10800

2455

1400

305

335

750

355

CPB 170

2)

1

17000

2455

1400

305

335

750

355

CPB 245

1)

1

5600

2905

2005/1985

225

335

640/650

335

CPB 245

1)

1

7700

2940

1960

225

335

675

355

CPB 245

2)

1

7700

3015

1960

305

335

750

355

CPB 245

2)

2

12100

3405

1960

305

335

750

355

CPB 300

1)

2

6400

3750

2380

225

335

675

355

CPB 300

2)

2

6400

3825

2380

305

335

750

355

CPB 300

2)

2

10100

4245

2800

305

335

750

355

CPB 362

1)

2

5400

4170

2800

225

335

675

355

CPB 362

2)

2

5400

4245

2800

305

335

750

355

CPB 362

2)

2

8500

4245

2800

305

335

750

355

CPB 420

1)

2

4800

4590

3220

225

335

675

355

CPB 420

2)

2

4800

4665

3220

305

335

750

355

CPB 420

2)

3

8800

6035

4200

305

335

750

355

CPB 550

1)

2

3700

5570

4200

225

335

675

355

CPB 550

2)

2

3700

5645

4200

305

335

750

355

CPB 550

2)

3

5800

6035

4200

305

335

750

355

CPB 800

2)

4

4400

7825

6060

305

335

750

355

1)

Lightweight oil tank,

2)

Medium oil tank,

3)

Primary teminal excluded,

4)

Valid or standard terminal box only


CPB 72-800 kV Shipping data

Capacitor voltage transformer CPB Type

Standard

Net weight incl.

capacitance

oil

For IEC

Polymer/

test volltage

Porcelain

Oil Shipping weight Shipping weight

Shipping dimensions

Shipping

3-pack

3-pack

3-pack

volume

Polymer

Porcelain

LxWxH

Total

m

pF (+10; - 5%)

kg

kg

kg

kg

CPB 72

1)

18200

190/200

38

710

740

CPB 72

1)

24900

210/240

44

770

CPB 72

2)

24900

280/310

62

m3

0.94x1.67x1.98

3)

3.1

3)

860

0.94x1.67x1.98

3)

3.1

3)

980

1070

0.94x1.67x1.98

3)

3.1

3)

CPB 123

1)

11200

200/220

40

750

810

0.94x1.67x2.33

3)

3.6

3)

CPB 123

1)

15400

230/280

45

840

990

0.94x1.67x2.33

3)

3.6

3)

CPB 123

2)

15400

300/350

63

1050

1200

0.94x1.67x2.33

3)

3.6

3)

CPB 145

1)

9100

210/280

41

785

995

0.94x1.67x2.54

3)

4.0

3)

CPB 145

1)

12900

230/300

47

845

1055

0.94x1.67x2.54

3)

4.0

3)

CPB 145

2)

12900

300/370

65

1055

1265

0.94x1.67x2.54

3)

4.0

3)

CPB 145

2)

20200

350/440

78

3x520

3x610

3x(2.73x0.65x1.08)

4)

3x1.9

4)

CPB 170

1)

7800

220/250

43

3x385

3x415

3x(2.73x0.65x1.08)

4)

3x1.9

4)

CPB 170

1)

10800

240/320

48

3x410

3x490

3x(2.73x0.65x1.08)

4)

3x1.9

4)

CPB 170

2)

10800

320/400

66

3x490

3x570

3x(2.73x0.65x1.08)

4)

3x1.9

4)

CPB 170

2)

17000

350/440

76

3x520

3x610

3x(2.73x0.65x1.08)

4)

3x1.9

4)

CPB 245

1)

5600

240/280

47

3x435

3x475

3x(3.29x0.65x1.08)

4)

3x2.3

4)

CPB 245

1)

7700

280/390

53

3x475

3x585

3x(3.29x0.65x1.08)

4)

3x2.3

4)

CPB 245

2)

7700

350/460

71

3x545

3x655

3x(3.29x0.65x1.08)

4)

3x2.3

4)

CPB 245

2)

12100

410/540

92

1080+475

1300+670

0.94x1.67x2.33 + 1.76x1.54x0.72

5)

4.0 + 1.9

5)

CPB 300

1)

6400

330/470

63

845+485

1085+695

0.94x1.67x2.54 + 1.97x1.54x0.72

5)

4.0 + 2.2

5)

CPB 300

2)

6400

400/540

81

1070+470

1310+680

0.94x1.67x2.54 + 1.97x1.54x0.72

5)

4.0 + 2.2

5)

CPB 300

2)

10100

460/650

108

3x505 + 1x570

3x600 + 1x855

3x(2.73x0.65x1.08) + 2.18x1.54x0.72

6)

3x1.9 + 2.4

6)

CPB 362

1)

5400

360/520

67

3x415 + 1x540

3x495 + 1x780

3x(2.73x0.65x1.08) + 2.18x1.54x0.72

6)

3x1.9 + 2.4

6)

CPB 362

2)

5400

430/590

85

3x490 + 1x525

3x570 + 1x765

3x(2.73x0.65x1.08) + 2.18x1.54x0.72

6)

3x1.9 + 2.4

6)

CPB 362

2)

8500

460/650

104

3x505 + 1x570

3x600 + 1x855

3x(2.73x0.65x1.08) + 2.18x1.54x0.72

6)

3x1.9 + 2.4

6)

CPB 420

1)

4800

380/560

71

3x440 + 1x600

3x530 + 1x870

3x(2.94x0.65x1.08) + 2.39x1.54x0.72

6)

3x2.1 + 2.6

6)

CPB 420

2)

4800

450/630

89

3x515 + 1x 585

3x605 + 1x855

3x(2.94x0.65x1.08) + 2.39x1.54x0.72

6)

3x2.1 + 2.6

6)

CPB 420

2)

8800

570/860

138

3x500 + 2x555

3x600 + 2x845

3x(2.73x0.65x1.08) + 2x(2.18x1.54x0.72)

CPB 550

1)

3700

430/670

75

3x480 + 1x700

3x600 + 1x1060

3x(3.43x0.65x1.08) + 2.88x1.54x0.72

6)

3x2.4 + 3.2

6)

CPB 550

2)

3700

500/740

93

3x555 + 1x685

3x675 + 1x1045

3x(3.43x0.65x1.08) + 2.88x1.54x0.72

6)

3x2.4 + 3.2

6)

CPB 550

2)

5800

690/1070

160

3x540 + 2x675

3x670 + 2x1055 3x(2.73x0.65x1.08) + 2x(2.18x1.54x0.72)

CPB 800

2)

4400

720/1170

164

3x525 + 3x610

3x635 + 3x945

1) Lightweight oil tank 2) Medium oil tank 3) Vertical 3-pack 4) Horisontal 1-pack (normally, due to transport heigt) 5) Bottom part vertical 3-pack; top part horizontal 3-pack 6) Bottom part horizontal 1-pack; top part horizontal 3-pack (normally, due to transport heigt)


3x(2.94x0.65x1.08) + 3x(2.39x1.54x0.72)

6)

3x1.9 + 2x2.4

6)

6)

3x1.9 + 2x2.4

6)

6)

3x2.1 + 3x2.6

6)

CPB 72-800 kV Schematic diagram

Schematic diagram of Capacitor Voltage Transformer

1

BN

Ground

1. Electromagnetic unit (EMU): Intermediate voltage transormer with compensating reactor 2. Primary winding o the intermediate voltage transormer 3. Compensating reactor 4. Adjustment windings 5. Secondary windings 6. Ferro-resonance damping circuit For ANSI a potential grounding switch can be added in the EMU. Option – Carrier Accessories

Drain coil available or 12, 24 or 48 mH.



CCA and CCB 72-800 kV Coupling capacitors

Coupling capacitors types CCA (standard capacitance) and CCB (extra high capacitance) are intended for power line carrier, filtering and other general capacitor applications with connection between phase and ground in high voltage networks with isolated or grounded neutral. The CCA and CCB are designed for widely shifting conditions from polar to dessert climates. The mixed dielectric in the capacitor element is subject to low stress and has proven to be insensitive to temperature changes. With regard to PLC application the CCA and CCB are suitable for use within the entire power line carrier transmission frequency range from 30 kHz to 500 kHz.


Outdoor

Design

Column type

Insulation

Alum inum- oil / pap er / polypropylene-ilm, synthetic oil


72-800 kV

Voltag e fac tor F v (Vf)

Up to 1.9/8 hrs

Insulators

Porcelain On request silicon rubber (SIR)

Creepage distance

≥ 25 mm/kV



Design altitude



CCA and CCB 72-800 kV Coupling capacitors

Material All external m etal sur aces are m ade o alum inium alloy resistant to most known environment actors. Bolts, nuts, etc. are made o acid-proo stainless steel. The alum inium suraces do n ot norm ally need painting. Creepage distance As st andard, CCA and CCB are oered with creepage distance 25 mm/kV phase-phase (IEC pollution class Heavy). Longer creepage distances can be oered on request. Silicone Rubber Insulators (SIR) The complete CCA /CCB range is available wi th sili cone rubber insulators. Our SIR insulators are produced with a patented helical extrusion moulding technique that gives completely join t-ree i nsul ator s wi th outstan ding perormance. All CCA/CCB with this type o i nsul ators h ave the same high creepage distance, 25 mm/kV phase-phase, as porcelain. Mechanical stability The mechanic al s tability gi ves sui cient saet y margin or n ormal wind loads and conductor orces. Rating plates Corrosion resistant rating plates with laser engraved text are used. General data is to be ound on the lowest capacitor unit whilst measured capacitance is marked on each capacitor unit. Primary terminal CCA/CCB is normally delivered with a lat 4-hole aluminium pad suitable or bolts C-C rom 40 to 50 mm or connecting regular aluminium cable clamps. Other primary terminals can be oered on request such as a round aluminium studs, Ø=30 mm.


Maximum static test orce on the primary terminal in all directions is: − − − − −

72 kV: 123 - 170 kV: 245 - 362 kV: 420 - 550 kV: 800 kV:

500 N 1000 N 1250 N 1500 N 1300 N

Higher can be quoted on request. Low voltage terminal/Ground clamp and support insulators The coupling capacito r is norm ally equipped with an L-terminal/Ground clamp with a cap o nickel-plated brass or conductors 8-16 mm (area 50-200 mm2 ) wh ich can be moved to either mounting side, ront or rear. A stain less stee l bar terminal, 80 x 145 x 8 mm, can be qu oted on request. The bar can be supplied undrilled or drilled according to IEC or NEMA standards. Support insulators, or mounting the CCA/CCB insulated rom the support structure (mainly or PLC application) are part o the delivery. PLC and Line trap Modern PLC equipment is adaptable or a wide range o coupling capacitors. Any speciic capacitance is then not required. Only a minimum capacitance is usually speciied due to choice o requency. A line trap can in most cases be mounted directly on top o the coupling capacitor or system voltage 245 kV and below. Special capacitances Other capacitance values than those listed below are available on request.

CCA and CCB 72-800 kV Installation and maintenance

Unpacking Please check the crates and their contents or damage during transportation upon receipt. Should there be any damage, please contact ABB or advice beore the goods are handled urther. Any damage should be documented (photographed). Asse mbly The capacito r un its, wh enever t he c oupling capacito r co nsis ts o more than one unit, are always delivered as separate units and assembled at installation. Maintenance The CCA/CCB is desig ned or a servic e lie o m ore than 30 years, and is practically maintenance-ree. We recommend however, the ollowing checks and measures. Visu al c heck We recommend a periodic inspection, to check or oil leakages and also to inspect the insulator or possible damage and collection o dirt.

Environmental aspects Impregnant Faradol 810 (the synthetic oil in the capacitor units) is ree rom PCB and other strongly harmul substance and poses low impact to the environment. Destruction Ater drain ing the oil, it can be burnt in an appropriat e plant. In this respect Faradol has similar combustion properties as normal mineral oil. The disposal should be carried out in accordance with local legal requirements and regulations. The porce lain can be de posi ted ater it has been crus hed. Alumini um parts are l abelled with material speciic atio ns. The metals in the housings o t he capacitor units can be recycled. Regarding the aluminium in the capacitor elements, with their combination o oil, paper and polypropylene ilm, it can be recycled ater the insulation has been burnt; the plastic ilm will not emit any harmul substances during this process.

Measurements of the capacitor units Since the capacitor units are permanently sealed under slight over pressure it is not possible to take oil samples rom them. Under normal service conditions, no noticeable ageing will occur within the capacitors (veriied by ageing tests). However, periodic measurement o the capacitance value and dissipation actor may still be carried out in order to veriy stable conditions o the capacitor units. Readings are taken between the top and L-terminal/Ground clamp.


CCA and CCB 72-800 kV Tec T echn hnic ical al da data ta

CCA: Number of capacitor units, capacitance, total height, flashover and creepage distance Minimum nominal values Typ e

Nu mbe r of

Standard

A

Flashover distance

Creepage

capacitor units

capacitance

Total hei ght

Polymer/porcelain

distance

Protected

C CA

C CA

CCA

CCA

CCA

pF ( +1 0; - 5% )

mm

mm

mm

mm

Poreclain with

creepage distance extra long creepage

distance

CCA 72

1

23 500

114 0

6 75/ 70 0

2 200

890

CCA 123

1

14 500

142 0

9 55/ 98 0

3 160

1 282

CCA 145

1

12 600

163 0

11 65/ 11 90

3880

1545

Oered on request.

CCA 170

1

1 0500

18 40

1 375/ 14 00

4 600

1 835

Normally insulator as

CCA 245

1

75 00

24 00

1 935/ 19 60

6 510

2 610

or the nearest higher

CCA 300

2

63 00

31 70

2 330/ 23 80

7 760

3 090

voltage

CCA 362

2

52 00

35 90

2 750/ 28 00

9 200

3 670

CCA 420

2

47 00

40 10

3 170/ 32 20

106 30

4 250

CCA 550

2

35 00

49 90

4 150/ 42 00

139 80

5 610

CCB: Number of capacitor units, capacitance, total height, flashover and creepage distance Minimum nominal values Typ e

Nu mbe r of

Extra high

A

Flashover distance

Creepage

Protected

capacitor units

capacitance

Total hei ght

Polymer/porcelain

distance

C CB

C CB

CCB

CCB

CCB

pF ( +1 0; - 5% )

mm

mm

mm

mm

Poreclain with

creepage distance extra long creepage distance

CCB 145

1

18 900

184 0

13 75/ 14 00

4 60 0

1 83 5

CCB 170

1

1 570 0

18 40

1 375 /14 00

4 600

1 835

Oered on request.

CCB 245

1

1 130 0

25 40

2 075 /21 00

6 990

2 805

Normally insulator as

CCB 300

2

94 00

35 90

2 750 /28 00

9 200

3 670

or the nearest higher

CCB 362

2

79 00

35 90

2 750 /28 00

9 200

3 670

voltage

CCB 420

2

71 00

40 10

3 170 /32 20

106 30

4 250

CCB 550

2

52 00

49 90

4 150 /42 00

139 80

5 610

CCB 800

3

35 00

74 40

6 225 /63 00

209 70

8 415

Test voltages: IEC 60358 Typ e

H ig hest v olt ag e

1min

LIWL

Switching impulse

PD test

Max.

RIV test

RIV level

for equipment

wet/dry

1.2/50 μs

250/2500 μs

voltage

PD level

voltage

kV

kV

kV

kV

kV

pC

kV Max .

μV

CCA 72

72 .5

140 /1 40

32 5

-

1. 1 x U m / √3

10

-

-

CCA 123

123

230 /2 30

55 0

-

1. 1 x U m / √3

10

78

≤ 2500

CCA/CCB 145

14 5

27 5/2 75

6 50

-

1. 1 x U m / √3

10

92

≤ 2500

CCA/CCB 170

17 0

32 5/ 325

7 50

-

1 .1 x U m / √3

10

108

≤ 2500

CCA/CCB 245

24 5

46 0/ 460

105 0

-

1 .1 x Um / √3

10

156

≤ 2500

CCA/CCB 300

3 00

- / 460

10 50

850

1.1 x Um / √3

10

19 1

≤ 2500

CCA/CCB 362

3 62

- / 510

11 75

950

1.1 x Um / √3

10

23 0

≤ 2500

CCA/CCB 420

4 20

- / 63 0

14 25

1 050

1. 1 x U m / √3

10

2 67

≤ 2500

CCA/CCB 550

550

- / 68 0

1 550

1 175

1. 1 x U m / √3

10

3 49

≤ 2500

CCB 800

765

- /97 5

2 100

1550

1. 1 x U m / √3

10

4 86

≤ 2500

(Um)

Test voltages above are valid or alti tudes ≤ 1000 meters above sea level.


CCA and CCB 72-800 kV Dimensions

C CA / C CB 7 2 - 2 4 5

C CA / CCB 3 0 0 - 8 0 0

D=366 D=366

A A

0 1 4

5 1 2

410

L-terminal/Ground clamp with a cap of nickel-plated brass for conductors 8-16 mm (area 50-200 mm 2 )

Note! The number o capacitor units can, or some voltages, be higher than in the drawings above. Please check in the table on page 54.


CCA and CCB 72-800 kV Shipping data

Coupling Capacitors CCA Typ e

N et w eig ht in cl. o il

O il

Sh ipp in g we ig ht

Shipping dimensions

Shipping volume

3-pack

3-pack

3-pack/Total

kg

kg

kg

Lx WxH

m3

CCA 72

140

17

56 5

1 .33 x 1.5 5 x 0. 80

1. 6 1)

CCA 123

170

18

67 5

1 .61 x 1.5 5 x 0. 80

2. 0 1)

CCA 145

190

21

73 5

1 .82 x 1.5 5 x 0. 80

2. 3 1)

CCA 170

220

22

82 5

2 .03 x 1.5 5 x 0. 80

2. 5 1)

CCA 245

280

27

1 060

2 .59 x 1.5 5 x 0. 80

3. 2 1)

CCA 300

370

41

730 + 6 70

2 x (1. 8 2 x 1. 55 x 0.8 0)

2.3 + 2.3 2)

CCA 362

410

44

810 + 7 50

2 x (2. 03 x 1 .55 x 0. 80)

2. 5 + 2.5 2)

CCA 420

460

49

895 + 8 35

2 x ( 2. 24 x 1 .55 x 0. 80)

2. 8 + 2.8 2)

CCA 550

560

55

1 095 + 1 035

2 x (2. 79 x 1 .55 x 0. 80)

3. 5 + 3.5 2)

N et w eig ht in cl. o il

O il

Sh ipp in g we ig ht

Shipping dimensions

Shipping volume

3-pack

3-pack

3-pack/Total

Coupling Capacitors CCB Typ e

kg

kg

kg

Lx WxH

m3

CCB 145

250

23

93 0

2 .03 x 1.5 5 x 0. 80

2. 5 1)

CCB 170

250

18

93 0

2 .03 x 1.5 5 x 0. 80

2. 5 1)

CCB 245

340

25

1 220

2 .79 x 1.5 5 x 0. 80

3. 5 1)

CCB 300

480

46

925 + 8 65

2 x (2. 03 x 1 .55 x 0. 80)

2. 5 + 2.5 2)

CCB 362

480

37

925 + 8 65

2 x (2. 03 x 1 .55 x 0. 80)

2. 5 + 2.5 2)

CCB 420

540

41

10 15 + 95 5

2 x (2. 24 x 1 .55 x 0. 80)

2. 8 + 2.8 2)

CCB 550

660

43

1 260 + 1 200

2 x (2. 79 x 1 .55 x 0. 80)

3. 5 + 3.5 2)

CCB 800

990

65

1 260 + 1 200 + 1 200

3 x (2. 79 x 1 .55 x 0. 80)

3 .5 + 3. 5 + 3. 5 3)

1) Normally, coupling capacitors are packed in horizontal 3-pack 2) Top and bottom parts are packed in separate cases, both o which horizontal 3-pack 3) Top, middle and bottom parts are packed in separate cases, all o which horizontal 3-pack



PQSensor™

The PQSensor™ offers a unique, convenient and cost effective method of faithfully reproducing harmonic content using Capacitive Voltage Transformers (CVT) without the need for Resistive-Capacitor Dividers (RCD) − The PQSensor™ oer s a pract ical and econ omic al s olut ion or wide bandwidth measurements using CVTs. − Eliminates the need or special high voltage instrument transormers or wide bandwidth voltage dividers. − Can be retroitted to in-service CVTs or installed in new units. − CVTs can continue to be used in normal ways to eed relays and other standard devices and at the same time to be used or power quality monitoring. − It can be used to detect CVT internal erroresonance. General description A po wer quality sens or i s av ailable to very accurately measure power quality parameters such as harmonics and licker over a wide bandwidth rom sub synchronous to high requencies. The PQSenso r™ curren t pro bes are i nsta lled in capacitor voltage transormers (CVTs) at the ground connection points in the secondary terminal box. The PQSensor™ signal-conditioning unit can be mounted on the CVT support structure making the retroit installation simple. Background Power quality assessment has become an increasingly important requirement in the management o electric supply systems. This recognition has led to the introduction o several standards or power quality measurement and monitoring. All standards such as IEEE 519, IEC 61000-4-30 and 61000-4-7 and UK Engineering Recommendation G5/4 require measurements up to the 50t h harmonic. Flicker standard IEC 610004-15 require measurement o modulating requency between 0.5 Hz to 33 Hz. Options for measuring harmonics I utilities and users are to monitor erroresonance oscillations, power quality and other wideband transients in high voltage systems, there is a need or cost eective and accurate means to do so. Sophisticated power quality monitors are now available rom various manuacturers. The challenge, however, is t o provide inputs to t hese monitors which accurately relect the phenomena occurring on the monitored system in a cost eective and sae way. The best perormance rom a co nventional devic e in term s o a wide bandwidth requency response is oered by a resistive-capacitor divider (RCD), which is very expensive, has a very limited output and would not normally be present in


a substation environment and does not meet saety requirements or isolation between high voltage and low voltage parts. Most power quality monitors are currently receiving their inputs rom wound or inductive type voltage transormers (VTs). The advantage with VTs is that they can also provide inputs into conventional revenue meters and relays and thereore may already be present i harmonic measurement is being considered as an add-on. What is not well understood is that wound VT’s have a limited requency range. Graph 1 shows the perormance o typical wound VT (Reerence: CIGRE Working Group 36). It can be seen that the requency response becomes unacceptable around 500 Hz, well below the requency limit established in the major standards. The upper limit increases or lower voltage class units but worsens or higher voltage class units. Capacitor voltage transormers have become the dominant technology or voltage measurement at transmission voltage levels because they provide reliable and accurate perormance at reasonable cost. CVTs, because they are essentially tuned to the system requency, are not in themselves capable o harmonic measurement. Because o the prevalence and reasonable cost o this technology, much eort has been expended to add the unctionality o harmonic measurement. There is a solut ion or employin g CVTs or harmonic measurement. A power quality sensor, to be used in conjunction with CVTs, has been developed and patented which overcomes the aorementioned objections. One o the important advantages o the technology, in addition to its cost eectiveness, is the speed o installation in in-service CVTs.

Relative transformation ratio 3.0 UN = 400 kV UN = 220 kV UN = 20 kV

2.0

1.0

0.0 50

100

200

500

1000

Frequency

2000

5000

PQSensor™

CVT Input

Capacitive voltage transformer cannot faithfully reproduce harmonic content on their output. Addition of PQSensor™ allows CVTs to be used in power quality and high frequency measurements.

100

50

0

It is as simple as Kirchoff’s law. Easy and quick to retrofit to in service CVTs.

-50

-100 0

5

10

15

20

25

30

35

t (ms)

CVT Output

PQSensor™ Output

100

100

50

50

PQSensor TM

0

-50

0

-50

-100

-100 0

5

10

15

20

25

30

C1

35

t (ms)

0

5

10

15

20

25

30

35

t (ms)

V c

EMU

C2

V o

V c

Vi

Current probe 2 Current probe 1

Signal conditioning modul

Wide bandwith output 0-20 mA


PQSensor™ Technical data

Abso lute gain error

0.5% at operating requency, measured at either outputs into 75 Ω terminations.

Gain stability over operating temperature range, at operating frequency, (measured at “Diff Output” 0.3% o ull-scale output. with 75 Ω termination) Gain stability over operating temperature range, at operating frequency, (measured at the integral

0.4% o ull scale output. This does not include any eects o the CVT.

output with 75 Ω termination) Frequency response

5 Hz up to 20 kHz

Frequency response measured of “Diff Output”

− 0.17 dB max at 5 kHz with respect to gain at operating requency.

Frequency response of “Output”

− 0.25 dB max. It will not have DC response.

Phase error

Less than 1.5 degrees at 3 kHz and less than 3 degrees at 5 kHz. Improved phase response is oered on request or special applications

Maximum burden

150 Ω pure resistive. This corresponds to a maximum voltage at the measurement device (e.g. power quality monitor) o 3 V rms at a current o 20 mA. The burden may be selected to be any value up to the maximum to suit the measurement device (the monitor). All igures related to accuracy and error mentioned in this document would also apply or burdens up the maximum values.

Output current levels

Dierential current output o 20 mA rms, driving 75 Ω through 300 meters o cable. Cable capacitance is typically 100 pF/m.

Operating temperature range

-40 to +55 °C

Power supply input voltage

48 V dc ±10% or 85-260 V dc/ac ±10%. The u nit can b e su pplie d ro m th e CV T nom inal outp ut o 69 V ac. Power consu mpti on 20 0 mW.

Size

Signal conditioning module: 10.2 x 6.3 x 3.6 inches (260 x 160 x 92 mm). Current transormers: outer and inside diameters o 2 inches (50 mm) and .8 inches (20 mm), a depth o .8 inches (20 mm).

Outdoor specification

Conorm to IP 65.

European Patent Number: EP 1295133. US Patent Number: US 6,919,717.



Optional Accessories or cable installation

Easy installations for cables A Roxtec CF 16 cable entry kit combines reliable sealing o cables in junction boxes with easy installations. Each CF 16 can handle several cables through the same opening.

Simple maintenance A Roxtec CF 16 can be opened and cl osed repeatedly or easy installations and simple maintenance. Another beneit is a built in spare capacity or possible new cables in the uture.

Multidiameter The CF 1 6 us es a daptable Mult idiamete r technolog y. This enables cables o a wide range o diameters to be sealed with a perect it, even when tolerances and deviations rom nominal dimensions are considered. The modules are delivered with a center core as a substitute or a cable. This means the entry kit is adaptable to dierent cable sizes, and to dierent numbers o penetrations.

Benefit summary − Seals several cables and diameters − Quick and easy installation − Cable retention − Rodent proo − IP 66/67 − Halogen-ree − UL/NEMA 4, 4X, 12, 13 − Fire retardant material UL 94-V0

Kit supplied The Roxt ec CF 16 kits are a vailable in t wo versions : Each one with a customized set o sealing modules to suit the most common cables sizes and numbers in the junction boxes (as shown below). For other dimensions, please contact: ABB, High Voltag e Products, Ludv ika, Sweden.

ABB CF 16 junction box kit 1 Part No.

Roxtec CF 16 Kit 1: Handles maximum one 9.5-32.5 mm cable, two 10-25 mm cables and six 3.5-16.5 mm cables.


ABB CF 1 6 juncti on box k it 2 Part No.

Roxtec CF 16 Kit 2: Handles maximum one 9.5-32.5 mm cable and four 10-25 mm cables.


Quality control and testing

ABB AB, High Voltage Products has been ce rtif ied by Bureau Veritas Quality International (BVQI) to fulfill the requirements of Quality management system ISO 9001, Environmental management systems ISO 14001 and Occupational health and safety management system OHSAS 18001.

Type te sts The type test s report s o r tests peror med on tran sor mers types similar to customer speciications are available.

Routine tests for current transformers IMB

Routine tests for inductive voltage transformers EMF

IEC 60044-1 clause 6.2 a. Veriication o terminal marking and polarity

IEC 60044-2 a. Veriication o terminal marking and polarity

b. Power-requency withstand test on primary winding

b. Power-requency withstand test on primary winding (applied test, 75 Hz or one minute)

Routine tests The ollowing tests are pero rmed on e ach tran sormer as standard beore delivery in accordance with applicable standards:

c. Partial discharge measurement c. Partial discharge measurement d. Power-requency withstand test on secondary windings e. Power-requency withstand test between winding sections

d. Power-requency withstand test on secondary windings (applied test 4 kV, 50 Hz or one minute)

. Inter-turn overvoltage test on secondary windings

e. Determination o errors

g. Determination o errors (One transormer in each batch is type-tested or accuracy. Remaining units at a reduced number o burdens. Complete error curves on all transormers must be ordered separately.)

ABB spec ific test s a. Sealing test b. Measurement o no load current I 0 at √3 x rated voltage

IEC 60044-1 clause 6.3 Measurement o capacitance and tan delta ABB spec ific test s a. Sealing test b. Measurement o secondary resistance (sample) c. Complete excitation curve or each type o core in a transormer. For the remaining transormers all cores are checked at one or two points on the excitation curve.


Other standards The tests described abo ve a lso ull y sa tisy o ther stan dards, such as IEEE.

Test capabilities in Ludvika Our high resource laboratories (high power/ high voltage/environmental) in Ludvika are members o SATS (Scandinavian Association or Testi ng o  El ectr ic P ower Equipment). SATS is a member o STL (Short Circuit Testing Liaison). STL provides a orum or international collaboration between testing organizations.

The membership and supervis ion o SATS e nsure s the i ndependency o the laboratory. We are, with these testing resources, able to claim that we are at the oreront in developing new and sae products or the 21st century.

Routine tests for capacitor voltage transformers CPB

Routine tests for capacitor voltage transformers CPB and Electromagnetic unit ANSI C93.1-1 999, § 6.3

IEC 60044-5, § 8.2 Electromagnetic unit: e, f, g, h, j Capacitor Voltage Divider/Coupling Capacitor: a, b, c, d, g Capacitor Voltage Transformer: i, j a. Tightness o capacitor voltage divider (10.1)

*

b. Capacitance and tan delta measurement at power-requency (9.2)

2.2.1 Dielectric test o primary winding, our times perormance reerence voltage (1 min.)

c. Power-requency withstand test (10.2)

*

d. Measurement o partial discharge (10.2.3)

2.2.3 Dielectric test on secondary windings and adjustment windings, 4 kV (1 min.)

Sealing test

Partial discharge measurement

e. Veriication o terminal markings (10.3) . Power-requency withstand tests on the electromagnetic unit (10.4) g. Power-requency withstand test on low voltage terminal (10.2.4) h. Power-requency withstand tests on secondary windings (10.4.2)

*

Dielectric test o low voltage terminal, 10 kV (1 min.)

*

Inspection and measurement o the damping circuit

6.

Veriication o terminal marking and polarity.

5.

Accuracy test

i. Ferro-resonance check (10.5)

Capacitor Voltage Divider/Coupling Capacitor ANSI C93.1-1 999, § 6.3 * Sealing test

j. Accu racy check (de term inat ions o errors) (10. 6)

1.1

Measurement o capacitance and dissipation actor or each capacitor unit beore dielectric test

ABB spec ific test s: Elec troma gnet ic unit − Sealing test − Inspection o damping circuit.

2.1

Dielectric test, voltage according to table above

*

Partial discharge test o each capacitor porcelain

1.2

Capacitance and dissipation actor measurement ater dielectric test

*

Dielectric test o low voltage terminal (1 min.)

* ) ABB-s peci al q uality c heck Buyer’s Guide | Outdoor Instrument Transormers 65

Ordering data

Current transformer IMB

Voltage trans former EMF

The following information is required with your order: − Quantity − Standard/Customer speciication − Frequency − Highest voltage or equipment − Rated insulation level


Test voltages − Lightning impulse 1.2/50 µs − Power requency dry/wet − Switching surge 250/2500 µs (For Um ≥ 300 kV, wet)

Test voltages − Lightning impulse 1.2/50 µs − Power requency dry/wet

Currents − Ratio (primary and secondary currents) − Reconnection (primary or/and secondary) − Rated continuous thermal current (R) − Short time current, Ith 1 sec (3 sec) − Dynamic current, Idyn Burden and accuracy − Number o cores − For each core please state: − Burden/class/overcurrent actor Special requirements − Silicone rubber insulator (gray) − Creepage distance (ABB standard: 25 mm/kV) − Light gray porcelain (ABB standard: brown) − Special primary terminals − Special secondary terminals − Heater − Secondary overvoltage protection: (spark gaps, protection gaps) − Anodized tank, term inal box and expansio n sy stem (IMB 36-170) − 1-pack, vertical transport (IMB 36-145) − Horizontal transport (IMB 36-145) − Other? Additional requi rements − Capacitive voltage tap − Adapter (or replacing old type IMB) − Ambi ent temperat ure − Height above sea level i >1000 m Please state “normal” system and test voltages according to actual standard when ≤1 000 m a.s.l. − Other requirements?


Voltages − Ratio (primary and secondary voltages) − Reconnection (secondary) − Voltag e a ctor (V) and time Burden and accuracy − Number o secondary winding(s) − For each winding please state: Connection: Star or broken delta Burden/class − Ther mal limi t bu rden (i requested) Special requirements − Silicone rubber insulator (gray) − Creepage distance (ABB standard: 25 mm/kV) − Light gray porcelain (ABB standard: brown) − Special primary terminal − Special secondary terminals − Secondary uses − Heater − Anodized ta nk, terminal bo x an d expans ion syst em − 1-pack vertical transport (EMF 52-84) − 1-pack, horizontal transport (EMF 123-170) − Other requirements? Addi tional requirements − Ambi ent temperat ure − Height above sea level i >1000 m Please state “normal” system and test voltages according to actual standard when ≤1 000 m a.s.l. − Other requirements?

Capacitor Voltage Transformer CPB

Coupling Capacitor CCA and CCB





Voltages − Ratio (primary and secondary voltages) − Reconnection (secondary) − Voltag e a ctor F V (V) and time

Special requirements − Silicone rubber insulator (gray) − Creepage distance (ABB standard: 25 mm/kV) − Light gray porcelain (ABB standard: brown) − Special primary terminal

Burden and accuracy − Number o secondary winding (s) − For each winding please state: Connection: Star or broken delta Burden/class − Ther mal limit burden (i requested )

Addi tional requirements − Capacitance - high or extra high − Ambi ent temperat ure − Height above sea level i >1 000 m Please state “normal” system and test voltages according to actual standard when ≤1 000 m a.s.l. − Other requirements?

Special requirements − Silicone rubber insulator (gray) − Creepage distance (ABB standard: 25 mm/kV) − Light gray porcelain (ABB standard: brown) − Special primary terminal − Special secondary terminals − Secondary uses − Heater − Protection or PLC equipment − Horizontal transport − Other requirements? Addi tiona l re quire ments − Capacitance - high or extra high − Ambi ent temperat ure − Height above sea level i >1000 m Please state “normal” system and test voltages according to actual standard when ≤1 000 m a.s.l. − Other requirements?


Instrument transformer - Buyers guide

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