pirelli.pdf

Power Cables A Powe Powerf rful ul Co Conn nnec ecti tion on

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PIRELLI Power Cables – the powerful connection Day by day power cables from Pirelli show their excellent reliability in distribution systems, power and industrial plants. Pirelli Cables and Systems is one of the two core business fields of the Pirelli Group that can look back on 125 years in a top position in power transmission and telecommunications. Together with the former business sector “Power Cables” of Siemens, Pirelli is now No. 1 in this market sector. This forms a solid basis to meet the competent and innovative growing requirements of the worldwide energy market. The following pages describe the major products from our delivery range.

Power Cables

Contents

Page

Power Cables – General ............. 4 – 8 Low- and Medium-Voltage Cables up to 45 kV ....................... 9 –14 Accessories for Lowand Medium-Voltage-Cables... 15 –18 High-Voltage Cables up to 290/500 kV ......................... 19 –20 Accessories for High-Voltage Cables up to 290/500 kV ............. 21–23

Power Cables – General

Application Cables intended for the transmission and distribution of electrical energy are mainly used in power plants, in distribution systems and substations of power supply utilities, and in industry.

Laying in the ground

Standard cables are suitable for most applications. They are preferably used where overhead lines are not suitable, e.g. in densely builtup areas, in cities (pedestrian zones), industrial installations and buildings. For power supply cables there are two main fields of application with different stresses (Fig. 1):

Installation in air

Directly in the ground

Outdoors

In ducts

Indoors

In concrete

In channels

The instructions AR 320-220 and AR 320-1220 contain detailed information on the application of cables, e.g. permissible pulling forces, limit temperatures, bending radii, cable fixing, storage and transport, etc.

Rated voltage – Power cables are classified according to the rated voltages U 0 / U and U m. – U m is the maximum rms value between phase conductors. – U 0 is the rms value between conductor and ground or grounded metallic covering (concentric conductor, screen, armour, metal sheath). U 0 = U / 3 – U is the rms value between phase conductors. – For application in three-phase and single-phase systems the main standard rated voltages in compliance with IEC 183 are given in Fig. 4. The maximum continuous operating-voltage at normal operation for low voltage cables with rated voltage of 0.6/1kV (U m = 1.2 kV) is 

Fig. 1: Fields of application Stresses and requirements

Stresses determined by the function:

Normal operation

The different stresses determined by the function form the basis for the definition of the cable requirements (Fig. 2).

Operation under fault conditions

Current

Thermal stress

Voltage

Electrical stress

Short-circuit

Thermal/ mechanical stress

Ground fault

Thermal stress

Transient waves

Electrical stress

Fig. 2: Stresses determined by the function

4

High-voltage cables are often designed according to the specific stresses of each special case of application.

Voltages

In water

For these cables, especially for the insulation (electrical strength) of buried cables, reliability and a long service life is required. The power cables from Pirelli Kabel und Systeme have proven this by an excellent service experience over decades.

In view of the possible external stresses for power cables, standard cables are suitable for most applications for laying in the ground (distribution cables) or for installation in air (installation cables) (Fig. 3).

– 1.8 kV in d.c. systems – 3.6 kV in a.c. systems for PVC-insulated cables having a concentric conductor or armour and conductor cross-sectional areas from 240 mm2 and above.


Current ratings For safe project planning of cable installations, the cross-sectional area of conductor shall be determined such that the requirement current-carrying capacity

Laying in the ground Mechanical

I z ≥ loading I b

is fulfilled for all operating conditions which can occur. A distinction is made between the current-carrying capacity for normal operation  and for short-circuit (operation under fault conditions) Especially in low-voltage systems, the cross-sectional area of the conductor must be additionally determined in respect of the permitted voltage drop ∆U. In order to avoid thermal overloading of the cable a suitable protective device also has to be selected. Besides that, the relevant installation rules shall be observed. 

With regard to these criteria, brief instructions for project planning are given in Part 2 of the book “Power Cables and their Application”. They are sufficient for most cases when using the values listed in this book. The procedure is shown by examples. More comprehensive calculation methods with detailed project planning data can be taken from Part 1 of the book “Power Cables and their Application”. Order-Nr.: Part 1: A19100-L531-F159-X-7600 Part 2: A19100-L531-F506-X-7600. For high-voltage cables, the current-carrying capacity is to be examined for each special case of application. It depends on a lot of special laying and installation conditions so that it is not possible to give standard values. Standards All types of Pirelli cables are based on national and international standards such as DIN VDE and IEC. A perfect quality system according to ISO 9001 ensures a maximum of reliability of Pirelli cables.

Installation in air

Tensile strength (l aying)

Tensile strength (laying)

Impact strength (civil works)

Pressure force (cleats)

Abrasion

Vibrations

Termites, rodents, etc.

Chemical

Chemicals (permanent influence), oil, acids

Chemicals (short-term influence) Ozone

Climatic

Moisture (water)

Moisture (rain, humidity)

Temperature

UV radiation Temperature (cold, heat)

Fire behavior

Not applicable

Fire propagation Corrosive combustion gases Smoke density Circuit integrity of cable installation

Fig. 3: Stresses determined by the installation method

U o /U

[kV]

U m in three-phase

systems

[kV]

U m in single-phase a.c. systems

Both phase conductors insulated [kV]

One phase conductor grounded [kV]

0.6/1

1.2

1.4

0.7

3.6/6

7.2

8.3

4.1

6/10

12

14

7

12/20

24

28

14

18/30

36

42

21

36/60

72.5

–

–

64/110

123

–

–

76/132

145

–

–

87/150

170

–

–

127/220

245

–

–

160/275

300

–

–

230/400

420

–

–

290/500

525

–

–

Fig. 4: Voltage levels

5


Constructional elements of cables Conductors The conductors comply with IEC 228. The type and construction of conductor – whether circular solid (RE) or circular stranded (RM), sector-shaped solid (SE) or sector-shaped stranded (SM) – can be taken from the relevant tables in the book “Power Cables and their Application”, Part 2. The smallest permissible nominal cross-sectional areas for circular and sector-shaped conductors are specified in the relevant standard. Especially for high-voltage low-pressure oil-filled cables, circular stranded hollow conductors (RM...H) are used. For crosssectional areas of 1000 mm 2 and above, special segmental conductors, also known as Milliken conductors, are used in order to reduce current losses occurring due to skin and proximity effects. Insulation In the field of cables with extruded insulation, there are three dominating insulation materials which have proved to be reliable: PVC for low voltage, EPR up to app. 150 kV and XLPE up to the highest voltage. XLPE for PROTOTHEN X cables has a high-grade insulating compound of polyethylene with a cross-linked structure which shows excellent properties. Cables above 30 kV up to 500 kV are designed with superclean insulation material because of the very low loss factor at all operating temperatures. The permittivity is also relatively low to limit capacitive power. The conductor shield and insulation shield of XLPE-cables are extruded together with the insulation (triple extrusion) in special manufacturing processes. So the insulation screen is generally solidly bonded to the insulation. To remove this insulation screen during installation of accessories, a special cutting tool is required. Designs with easy-strip semiconductive layers are also avail able for medium-voltage cables. PVC is mainly used for cables designed for voltages from 1 kV up to and including 6 kV. Pirelli PROTODUR cables have an insulation based on that material. Compared to XLPE, these cables have a significantly higher permittivity.

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Oil-impregnated paper, a classic insulation material, is still used especially for extrahigh-voltage low-pressure oil-filled cables. The advantages of this type of insulation are the vast experience that stands behind it and the high degree of reliability so impressively demonstrated by the fault-free service of these cables decade after decade. Identification of cores for low-voltage cables Cables with more than 5 cores (control cables) have black cores with white imprinted numbers. The green-yellow core is to be used solely as a PE (protective earth) or PEN (protective earth and neutral) conductor. The blue core is provided for use as a neutral conductor.

The blue core may be used as a phase conductor if the cable has a concentric conductor or if a neutral conductor is not required. Concentric conductors, screens, armor and metal sheaths

Nominal crosssectional area of phase conductor [mm 2]

Nominal crosssectional of the screen [mm 2]

25 to 120

16

150 to 240

25

300

25

400, 500

35

Fig. 5: Nominal cross sectional area of phase conductor For high-voltage cables a lead sheath is normally used for low-pressure oil-filled cables, but it is also available for cables with XLPE insulation. For high-voltage PROTOTHEN X cables up to 150 kV, however, normally a screen of round copper wires with a cross-sectional area of 35 mm2 or 50 mm2 is used together with an aluminum laminated PE sheath.

Low-voltage cables may be provided with concentric conductors as protection from contact if there is a possibility of the cables being exposed to mechanical damage. Concentric conductors are made of copper. The data on the cross-sectional area in the type designation code always refer to the material of the phase conductors.

For all types of insulation used for highvoltage cables, a corrugated Al-sheath is available. The advantage of such a cable is the high mechanical rigidity and, under fault conditions, the high short circuit currentcarrying capacity.

For cables with concentric conductors in distribution systems, the wires of the concentric conductors are laid in waveform (CEANDER conductor) on the inner covering. These conductors facilitate the installation of the branch joints because the concentric conductor can easily be lifted up and bundled at one side. It also ensures that there is sufficient space for connecting branches to the underlying phase conductors without having to cut the CEANDER conductor.

For low-voltage PROTODUR cables with PVC insulation and PROTOTHEN X cables with XLPE insulation, a PVC sheath is normally applied.

Screens are compulsory for all cable types above 0.6/1 kV. Screens shall consist of copper. Multicore cables may have individual screened cores or a common screen. In multi-core cables a steel wire armor may also be used as a common screen. The screens which are always grounded ensure protection from contact and carry the short circuit and earth fault currents. According to DIN VDE 0276-620 the nominal crosssectional area of the screens (geometrical cross-sectional area) must not fall below the values in the following table (Fig. 5). To protect the insulation of PROTODUR or PROTOTHEN X cables against permanent, intensive ingress of fuels, oils or solvents, a lead sheath can be provided under the PVC sheath or PE-sheath.

Outer coverings

Medium-voltage XLPE-insulated cables normally have a sheath of polyethylene which is more resistant with respect to the mechanical stresses. PVC sheaths can also be provided, especially for underground mining or indoor installation (flame retardance according to IEC 60 332-2). As already mentioned, high-voltage cables having a screen of round copper wires are provided with an aluminum laminated PE sheath consisting of an aluminum tape coated with PE copolymer on the outer side and bonded to a black PE sheath. All other high-voltage cable types are usually also combined with a PE sheath because of its high mechanical stability. Only if there are requirements for flame retardance according to IEC 60 332-2 a PVC sheath should be applied instead of or in addition to the commonly used PE sheath.


Examples for application (Fig. 6 to 9)

Products Low- and medium-voltage cables Information on low-voltage and mediumvoltage cables with voltages or constructions not listed in this Engineering Guide, for example paper-insulated cables, can be obtained from Pirelli PKS BU EV. For further information please contact: Fax: ++49- 9131-7346 30

High- and Extra-High-Voltage Cables up to 290/500 kV and Accessories Information on high-voltage cables and accessories is available from Pirelli PKS BU EV. High-voltage cables are laid and installed by Siemens on a contractual basis. This covers all tasks from route planning up to the final voltage test to be carried out. The cables and accessories shown on the following pages are designed for all kinds of high-voltage transmission of electrical energy. The main requirements for these applications are as follows: Low loss factor tan delta: This is for low dielectric losses to minimize heating.  Thermal stability of insulation: This is for a uniform loss factor at all load fluctuations and overvoltages occurring in operation.  Electrical stability of insulation: This is for freedom from partial discharge through effective prevention of ionization in voids. All these main requirements are fulfilled by XLPE-insulated PROTOTHEN X cables and low-pressure oil-filled cables, together with Pirelli accessories for high-voltage cables shown in Fig. 33 to 36 by examples to demonstrate their typical constructional elements. 

Cables with improved fire behaviour SIENOPYR cables have the following excellent characteristics:

Fig. 6: Installation of low- and medium-voltage cables in an industrial area







Reduced fire propagation performance: Even in the case of large grouping and vertical installation of cables, the spread of fire by cables is prevented (tests according to IEC 60 332-3). Corrosivity: No subsequential fire damage because the materials of these cables are halogenfree and the gas emission is non-corrosive (tests according to IEC 60 754-2). Low smoke density: Fire-fighting and rescue operations are decisively facilitated (tests according to IEC 61 034).

For further information please contact: PKS BU IL

Fig. 7: Laying of a 20 kV single-core PROTOTHEN X Cable

Fax: ++49-9131-73 46 90 Flexible cables: Flexible cables which are used for installations in high-rise and industrial high-rise buildings, for connecting mobile equipment as well as for internal wiring of equipment can be obtained from Pirelli PKS BU IS.

For further information please contact: Pirelli PKS BU EV Fax: ++49- 9131-73 46 30 Note: PKS = BU = EV = IS = IL =

Pirelli Cable and systems Business Unit Utilities power supply utilities industry and special cable installations cables

For further information please contact: Fax: ++49- 9131-73 46 90

Fig. 8: Low-pressure oil-filled cables to switchgear by GIS-type sealing ends

Fig. 9: Cross-bonding joint comprising single slip-on stress-devicer 400 kV XLPE cables with corrugated aluminium sheath

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Product Overview – Selection Guide Overview of standard cable types and a guide for the selection of cable according to voltage, insulation and metallic coverings.

Low and medium voltage Power cables

0.6/1 kV

Multi- core

PVC insulation

XLPE insulation

3.6/6 kV

Three-core

6/10 kV

Control cables

0.6/1 kV

NYY

Page 9

Concentric conductor

NYCWY

Page 9

Steel armor

2XFY

Page 10

EVAsheath

N2XH

Page 13

PVC insulation

Steel armor

PVC sheath

NYFGY

Page 11

XLPE insulation

Screen

N2XSEY

Page 11

Screen and Steel armor

2XSEYFY

Page 12

Screen

N2XSY

Page 12

PEsheath

N2XS2Y

Page 13

PVC sheath

NYY

Page 14

NYCY

Page 14

Single-core

Multi- core

PVC sheath

No screen

12/20 kV

6/10 kV 12/20 kV 18/30 kV

No screen

PVC insulation

No screen

Concentric conductor

High voltage cable

64/110 kV

Single- core

XLPE insulation

Headsheath

PVC sheath

YKYRY

Page 10

Screen

Laminated PE-sheath

2XS(FL)2Y

Page 19

Lead sheath

PE-sheath

2XK2Y

Page 19

2XKLDE2Y

Page 20

NÖKLDE2Y

Page 20

127/220 kV 160/275 kV

230/400 kV 290/500 kV

Fig. 10: Overview of main cable types

8

Oil-impregnated paper insulation

Corrugated aluminumsheath

Low and Medium Voltage Cables up to 45 kV

Multi-Core PROTODUR Power Cables

0.6/1 kV

Mainly for power stations, industrial plants and substations. Usually laid indoors, in ducts and outdoors. May also be laid in the ground where damage (e. g. from pickaxes) is unlikely.

NYY U 0/U =

0.6/1 kV ( U m = 1.2 kV)

acc. to DIN VDE 0276-603.3G, HD 603.3G, IEC 60 502-1

Design Power cables with   

Application

Current-Carrying Capacity

copper conductor, PVC insulation and PVC sheath.

acc. to DIN VDE 0276-603, based on IEC 60 287 Permissible operating temp. Permissible short-circuit temp.

70 °C 160 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A58-X-7600 Four-core PROTODUR cables, type NYY for 0.6/1 kV 2. Cable book: Power Cables and their Application, Part 2, pp. 226, 227

Fig. 11

Multi-Core PROTODUR Power Cables with concentric waveform conductor

0.6/1 kV

NYCWY U 0/U =

0.6/1 kV ( U m = 1.2 kV)

acc. to DIN VDE 0276-603.3G, HD 603.3G, IEC 60 502-1

Application Mainly for distribution systems. Also for power stations, industrial plants and substations. Current-Carrying capacity

Design

acc. to DIN VDE 0276-603, HD 603, based on IEC 60 287

Power cables with

Permissible operating temp.

  



copper conductor, PVC insulation, concentric copper conductor laid in waveform and PVC sheath.

Permissible short-circuit temp.

70 °C 160 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A28-X-7600 PROTODUR cables, type NYCY/NYCWY for 0.6/1 kV 2. Cable book: Power Cables and their Application, Part 2, pp. 232, 233 Cables with aluminium conductor on request.

Fig. 12

9


Multi-Core PROTOTHEN X Power Cables with flat steel wire armour

0.6/1 kV

For very severe operating, laying and installation conditions. The armor withstands tensile stresses such as those occurring on step gradients and in mining subsidence areas. Suitable as river and submarine cables.

2XFY U 0/U =

0.6/1 kV ( U m = 1.2 kV)

acc. to IEC 60 502

Application

Design Power cable with    


copper conductor, XLPE insulation, with flat steel-wire armour and PVC sheath.

on request Permissible operating temp. Permissible short-circuit temp.

90 °C 250 °C

(for short circuit durations up to 5 s)

Fig. 13

Multi-Core PROTODUR Control Cables with round steel wire armour YKYRY U 0/U =

0.6/1 kV ( U m = 1.2 kV)

acc. to IEC 60 502

Design Control cable with     

Fig. 14

10

copper conductor, PVC insulation, with lead sheath, round wire armour and PVC sheath.

0.6/1 kV

Application For filling stations, refineries and other installations where the effects of oil, solvents, etc. are to be expected. The lead sheath protects the installation from such effects. Current-Carrying Capacity on request Permissible operating temp. Permissible short-circuit temp. (for short-circuit durations up to 5 s)

70 °C 160 °C


3-Core PROTODUR Cables with flat steel wire armour

3.6/6 kV

Mainly in power stations, industrial plants and substation stations. For laying outdoors, in ducts and indoors, resistant to tensile stress, suitable as river and submarine cables.

NYFGY U 0/U =

3.6/6 kV ( U m = 7.2 kV)

acc. to DIN VDE 0271, IEC 60 502-2

Application

Design


Power cable with

on request

   

copper conductor, PVC insulation, flat steel-wire armour and PVC sheath.

Permissible operating temp. Permissible short-circuit temp.

70 °C 160 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A50-X-7600 3-core PROTODUR cables, type NYFGY for 3.6/6 kV 2. Cable book: Power Cables and their Application, Part 2, pp. 248, 249

Fig. 15

3-Core PROTOTHEN X Cables with copper wire screen on each core

6/10 kV

N2XSEY U 0/U =

6/10 kV ( U m = 12 kV)

acc. to DIN VDE 0276-620.6C, HD 620.6C, IEC 60 502-2

Application Mainly in power stations, industrial plants and substations and in distribution systems where high thermal stresses occur. For laying outdoors, in ducts and indoors.

Design


Power cables with


 

 

copper conductor, extruded firmly bonded semiconductive layers under and over the XLPE insulation, with individually screened cores and PVC sheath.

Permissible operating temp. Permissible short-circuit temp.

90 ° C 250 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A1-X-7600 3-core PROTOTHEN X cables, type N2XSEY for 6/10 kV

Fig. 16

11


3-Core PROTOTHEN X Cables with copper wire screen and flat steel wire armour

12/20 kV

2XSEYFY U 0/U =

12/20 kV ( U m = 24 kV)

acc. to IEC 60 502

Design Power cable with  



 

copper conductor, extruded firmly bonded semiconductive layers under and over the XLPE insulation, with individually screened cores, PVC separation sheath with flat steel wire armour and PVC sheath.

Application Mainly in industrial plants, power stations and public distribution systems, where high thermal and mechanical stresses occur. Note: This type is available on request for the full range af cable types incorporating aluminum conductors, screens of copper tapes, armour of galvanized round steel wires or steel tapes, outer sheath of PE or any combination of these. Current-Carrying Capacity on request Permissible operating temp. Permissible short-circuit temp.

90 °C 250 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A43-X-7600 3-core PROTOTHEN X cables with wire screen and galvanized flat steel-wire armor, type 2XSEYFY for 12/20 kV

Fig. 17

Single-Core PROTOTHEN X Cables with copper wire screen

Application Mainly in power stations, industrial plants and substations. For laying outdoors, in ducts and indoors.

N2XSY U 0/U =

6/10 kV ( U m = 12 kV) U 0/U = 12/20 kV ( U m = 24 kV) U 0/U = 18/30 kV ( U m = 36 kV) acc. to DIN VDE 0276-620.5C, HD 620.5C, IEC 60 502-2

Current-Carrying Capacity Design


Power cable with

Permissible operating temp.

 

 

Fig. 18

12

copper conductor, extruded firmly bonded semiconductive layers under and over the XLPE insulation, copper wire screen and PVC sheath.

Permissible short-circuit temp.

90 °C 250 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A2-X-7600 1-Core PROTOTHEN X Cables 6/10 kV Order No. E50001-U511-A48-X-7600 1-Core PROTOTHEN X Cables 12/20 kV 2. Cable book: Power Cables and their Application, Part 2, pp. 258–265


Single-Core PROTOTHEN X Cables with copper wire screen

Application Mainly for industrial and distribution systems, for laying in the ground. When these cables are laid indoors or in ducts, it must be noted that polyethylene-sheathed cables are not flame-retardant according to DIN EN 50265, Test method B

N2XS2Y U 0/U =

6/10 kV ( U m = 12 kV) 12/20 kV ( U m = 24 kV) U 0/U = 18/30 kV ( U m = 36 kV) U 0/U =

acc. to DIN VDE 0276-620.5C, HD 620.5C, IEC 60 502-2

Design Power cables with  

 

copper conductor, extruded firmly bonded semiconductive layers under and over the XLPE insulation, with copper wire screen and PE sheath.

Current-Carrying Capacity To DIN VDE 0276-620, HD 620, based on IEC 60 287 Permissible operating temp. Permissible short-circuit temp.

90 °C 250 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A65-X-7600 1-Core PROTOTHEN X Cables 6/10 kV Order No. E50001-U511-A26-7600 1-Core PROTOTHEN X Cables 12/20 kV Order No. E50001-U511-A25-X-7600 1-Core PROTOTHEN X Cables 18/30 kV 2. Cable book: Power Cables and their Application, Part 2, pp. 258–265

Fig. 19

SIENOPYR Power Cables Halogen-Free Cables with Improved Characteristics in Case of Fire N2XH U 0/U =

0.6/1 kV ( U m = 1.2 kV)

acc. to DIN VDE 0276.604.5G Part 2 (HD 604.5G)

Design Power cables with    

copper conductor, XLPE insulation, inner covering and EVA sheath.

Application SIENOPYR cables with improved characteristics in the case of fire are mainly used in buildings and installations with increased safety risks and high concentration of people or valuable contents. The application of these cables should be regarded as a measure for preventive fire protection in: Hospitals Hotels  Underground and local rapid transit rail systems  Schools SIENOPYR cables are intended for installation indoors and outdoors.  

Current-Carrying Capacity on request Permissible operating temp. Permissible short-circuit temp.

90 °C 250 °C

(for short-circuit durations up to 5 s) Publications: 1. Cable book: Power Cables and their Application, Part 2, pp. 271–277

Fig. 20

13


Multi-Core PROTODUR Control Cables

0.6/1 kV

NYY U 0/U =

0.6/1 kV ( U m = 1.2 kV)

acc. to DIN VDE 0276-627.4H, HD 627.4H, IEC 60 502-1

Design Control cable with   

copper conductor, PVC insulation (numbered cores) and PVC sheath.

Application Transmission of control pulses, measured values, etc. in power stations, industrial plants, installation indoors, etc., in ducts in the ground and outdoors. The printed numbers on the cores simplify identification and speed up installation, as ringing out is not necessary. When long runs are laid in the ground, inductive effects are to be taken into account. Current-Carrying Capacity acc. to DIN VDE 0276-627.4H, HD 627.4H, based on IEC 60 287 Permissible operating temp. Permissible short-circuit temp. (for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A63-X-7600 PROTODUR control cables, type NYY for 0.6/1 kV

Fig. 21a

NYCY U 0/U =

0.6/1 kV ( U m = 1.2 kV)

acc. to DIN VDE 0276-627.4H, HD 627.4H, IEC 60 502-1

Design Control cable with    

Fig. 21b

14

copper conductor, PVC insulation (numbered cores), concentric copper conductor and PVC sheath.

2. Cable book: Power Cables and their Application, Part 2, pp. 246, 247

70 °C 160 °C

Accessories for Low and Medium Voltage Cables

Together with the cables, we also offer a complete range of low and medium voltage accessories suitable for all kinds of applications and tested according to international standards. Voltage classes : – low voltage: up to 1 kV

U m

– medium voltage: 12, 24 and 36 kV

U m

Products available: – joints – terminations – separable connectors

Overview of accessories for polymeric power cables*) Multi-core

Power cables

1-core

3-core

0.6/1 kV

Straight joints

CTJL (1 kV

U m)

Fig. 23

Page 16

NYY NYCWY 2XFY

Branch joints

CTBL (1 kV

U m)

Fig. 23

Page 16

6/10 kV up to 18/30 kV

Straight joints

ITJM, EPJM

Fig. 24 + 25 Page 16 + 17

N2XSY N2XS2Y

Terminations

ELTImb, ELTI, ELTO

Fig. 26

Page 17

Separable connectors

FMCS, FMCE, FMCTs, FMCTj

Fig. 27

Page 18

6/10 kV

Straight joints

ITJM, EPJM

Fig. 24 + 25 Page 16 + 17

Terminations

ELTI, ELTO

Fig. 26

Page 17

Separable connectors


Fig. 27

Page 18

Straight joints

CTJL-1C (1 kV

Fig. 23

Page 16

N2XSEY 12/20 kV 2XSEYFY

Control cables

Multi-core

0.6/1 kV NYY NYGY YKYRY

U m)

*) Overview of some of our accessories for polymeric insulated low and medium voltage cables, other accessories are also available on request. Please check suitability of listed accessories with your cable cross sections. Cables Pirelli s.a. reserve the right to change without notification, any characteristics for technical modification.

Fig. 22 All the accessoires are listed in the Pirelli catalogue. For further information please contact: Fax: +33-1-49 76 45 42

15


Straight joint and branch joint for multi-core cable

0.6/1 kV

Description Cast resin joint and branch joint with transparent plastic casing made of two shells which are snapped together or fastened by slides  Insulation: two part synthetic resin, supplied in pre-dosed bags or in cans  Sealing: self-amalgamating tape or putty 

CTJL, CTJT, CTBL

Application 

In ground, ducts and in air

Installation 

No need for special tools, no heating

Fig. 23: Castfit

Injected straight through joint for 1-core and 3-core polymeric cable ITJM

6/10 kV up to 18/30 kV

Description 

Tapped joint, with resin injected outer protection

Application 


Installation 

Fig. 24: Injectfit

16

No need for special tools, no heating


Coldshrinkable straight through joint for 1-core and 3-core polymeric cable

6/10 kV up to 18/30 kV

Description 



EPJM

For 1-core cable: complete coldshrinkable joint For 3-core cable: coldshrinkable joint with heatshrinkable or injected outer protection

Application 


Installation 



For 1-core cable: no need for special tools, no heating For 3-core cable: gas torch or hot air blower if heatshrinkable outer protection

Fig. 25: Elaspeed

Indoor and outdoor terminations for 1-core and 3-core polymeric cable

6/10 kV up to 18/30 kV

Description 



ELTImb, ELTI, ELTO



Elastic slip-on terminations, moulded from non-tracking silicone rubber ELTImb: monobloc termination with integrated stress relief tube up to 12/20 kV ELTI, ELTO: modular termination (separated elastic components) up to 18/30 kV

Application 



ELTImb and ELTI: for indoor use, into boxes, compact switchboard and terminal boxes located outdoor and subject to condensation ELTO: for outdoor use, can be subject to severe climatic conditions, solar radiation and pollution, for terminating cables onto overhead lines or busbars

Installation 

No need for special tools, no heating or filling

Fig. 26: Photo Elasticfit 1 or Elasticfit 2

17


Separable connectors for 1-core and 3-core polymeric cable

6/10 kV up to 18/30 kV

Description   


EPDM moulded connectors, screened Ratings 250 A, 400 A/630 A, 630/1250 A Non-loadbreak operation

Application 



For connection of transformers, switchgear units, motors, etc. For indoor and outdoor installation

Installation 

No need for special tools, no heating or filling

Note Connectors can also be supplied with metallic housing. Accessories for separable connectors and bushings are also available. Please consult us for further information.

Fig 27: Formfit 1

18

High-Voltage Cables up to 290/500 kV

Single-core XLPE-insulated cable with laminated sheath

64/110 kV

Design Cable with  

2XS(FL)2Y



64/110 kV ( U m = 123 kV)



according to DIN VDE 0276-632 IEC 60840





 

Conductor Conductor screen XLPE insulation Insulation screen Semiconductive nonwoven swelling tape Screen of copper wires Copper contact helix Laminated Al-PE outer sheath


90 °C 250 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A108-P-7400 PROTOTHEN X XLPE insulated high voltage cables

Fig. 28

Single-core XLPE-insulated cable with lead sheath

160/275 kV


2XK2Y



160/275 kV ( U m = 300 kV)



based on IEC 60 840



  

Conductor Conductor screen XLPE insulation Insulation screen Semiconductive nonwoven swelling tape Lead sheath Compound PE sheath


90 °C 250 °C

(for short-circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A108-P-7400 PROTOTHEN X XLPE insulated high voltage cables

Fig. 29

19

High-Voltage Cables up to 290/500 kV

Single-core XLPE-insulated cable 290/500kV with Milliken conductor and corrugated aluminum sheath


2XKLDE2Y



290/500 kV ( U m = 525 kV)







based on IEC 60 840

 

Milliken conductor Conductor screen XLPE insulation Insulation screen Semiconductive bedding layer Fabric tape with interwoven copper wires Corrugated aluminum sheath Plastic tape in compound and PE sheath


90 °C 250 °C

(for short circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A108-P-7400 PROTOTHEN X XLPE insulated high voltage cables

Fig. 30

Single-core low pressure oil filled cable with corrugated aluminum sheath

290/500 kV


NÖKLDE2Y 290/500 kV ( U m = 525 kV) according to IEC 60 141

 



 

Hollow conductor Carbon black paper Paper insulation Carbon black paper and metallized black paper Fabric tape with interwoven copper wires Corrugated aluminum sheath Plastic tape in compound and PE sheath


85 °C 160 °C

(for short circuit durations up to 5 s) Publications: 1. Leaflets: Order No. E50001-U511-A5-P-7600 Cables and Accessories for High- and Extra-High-Voltages

Fig. 31

20

Accessories for High-Voltage Cables up to 290/500 kV

Typical design of outdoor-type sealing end

Connector stalk Corona shield

Typical design of transformer-type sealing end

Connecting tube

Corona shield

Porcelain insulator

Arcing horn

Filling compound

Filling compound Slip-on stress cone Insulator

Slip-on stress cone Outlet screw or valve connection

Support base

Outlet screw or valve connection

Aluminumbaseplate

Copper entrance bell

Insulating ring Copper entrance bell

Mechanical protection


Fig. 32

Fig. 33

21

Accessories for High-Voltage Cables up to 290/500 kV

Single-core sectionalized joint Coaxial cable for cross-bonding

Deflector

Conductor shield

Housing

Insulation

Deflector

Fig. 34

Typical design of GIS-type sealing end Connection interface according to IEC 859

Cast-resin insulator

Filling compound

Slip-on stress cone

Copper entrance bell

Outlet screw or valve connection


For further information please contact: Fax: ++49-2331-357118

Fig. 35

22

23

Kabel und Systeme GmbH & Co. KG Kabelwerk Berlin P.O. Box 140 Gartenfelder-Strasse 28 D-13599 Berlin

Kabel und Systeme GmbH & Co. KG P.O. Box 32 20 Paul-Gossen-Strasse 100 D-91050 Erlangen

24

Order No. E50001-U511-A117-P-7600 Printed in Germany Dispo-Stelle 30200 TH 054-990347 1012287 KG 099910.

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