Product manual
SafeRing / SafePlus 12-24kV Installation and operating instructions
CONTENTS
2
1.
Safety 1.1 For your safety 1.2 Skilled personnel 1.3 Crucial information
4 4 4 4
2.
General description 2.1 Outer assembly
5 6
3.
Transport and handling 3.1 By receiving inspection 3.2 Storage
7 7 7
4.
Technical data 4.1 Electrical data SafeRing 4.2 Electrical data SafePlus
8 8 8
5.
Installation 5.1 Standard 3-way switchgear 5.2 3-way switchgear with base frame (AFL) 5.3 3-way switchgear with base frame (AFLR)
9 9 10 11
6.
Dimensions
13
7.
Internal arc classification (IAC)
14
8.
Cable compartment 8.1 Standard cable compartment 8.2 Arc proof cable compartment 8.3 Cable connection
17 17 17 18
9.
Extension of switchgear 9.1 External busbar 9.2 Side connection
19 19 19
10.
Current and voltage transformers
19
11.
Motor operation
20
12.
Relay and current transformers
21
13.
Pressure indicator 13.1 Gas pressure 13.2 Altitude 13.2.1 Adjustment of gas pressure
22 22 23 23
14.
Operation of the switchgear 14.1 Operating conditions 14.2 General warnings and precautions 14.3 Putting into service 14.3.1 Preparatory work 14.4 Start-up
24 24 25 25 25 25
15
Operation 15.1 Operation of cable switch 15.2 Operation of vacuum circuit-breaker circuit-breaker 15.3 Operation of vacuum circuit-breaker circuit-breaker 12kV/25kA, 24kV/20kA 15.4 Operation of fuse-switch disconnector 15.5 Installation and replacement of fuses 15.6 Fuse selection tables 15.6.1 Fuse selection table - CEF 15.6.2 Fuse selection table - CEF-S
26 26 27 28 29 29 31 31 32
16.
Metering module
33
17.
Capacitive voltage indicators 17.1 Voltage indicators VPIS 17.2 Voltage indicators VDS 17.3 Voltage indicators VDS-LRM
34 34 35 35
18.
Additional equipment 18.1 Low-voltage connections 18.2 Remote control and monitoring unit
36 36 36
19.
Cable testing 19.1 Procedure for switchgear with test points 19.2 Procedure for testing directly on the cable connector with the cable connected to the switchgear 19.3 Procedure for testing directly on the cable connector with the cable disconnected from the switchgear
37 37 38
20.
Service and maintenance 20.1 General warnings and cautions 20.2 Maintenance intervals 20.3 Inspection 20.4 Servicing 20.5 Repairs
39 39 39 39 40 40
21.
Environmental certification 21.1 Life expectancy of product 21.2 Recycling capability 21.3 End-of-life
41 41 41 41
38
3
1. SAFETY 1.1 For your safety! – Strictly Strictly follow follow these Installa Installation tion and operating operating instructi instructions. ons. – Only install install switch switchgear gear in indoor indoor conditi conditions ons accordi according ng to IEC 62271-1 cl.2.1. – Ensure Ensure that installa installation, tion, operati operation on and maintena maintenance nce is only carried out by professional personnel. – Comply fully with with the standa standards rds in force force (IEC or local local), ), the connection conditions of the local power utility and the applicable safety at work regulations. – Observe Observe the relev relevant ant informa information tion in the the manual manual for all actions involving the switchgear. – Use gloves gloves when instal installing ling or operatin operating g switchgear switchgear.. 1.2 SKILLED PERSONNEL All the inst allatio alla tion, n, putting put ting into int o servi s ervice, ce, running runn ing and mainmain tenance operations must be carried out by skilled personnel with in-depth knowledge of the apparatus. When carrying out any maintenance work, the regulations in the country of installation must be strictly obeyed. Maintenance work must only be performed in a professional way by trained personnel familiar with the characteristics of the switchgear, in accordance with all the relevant IEC safety regulations and those of other technical authorities, and also respecting other overriding instructions. It is recommended that ABB service personnel be called in to perform the servicing and repair work. 1.3 CRUCIAL INFORMA INFORMATION TION Pay special attention to the information shown in the manual by the following attention symbol:
After Aft er t his symbol sym bol there the re are four diff erent expl anation anat ions s in dica ting what types of injuries or damage can be caused should the recommended precautions not be followed: – DANGER DANGER - identifies the most serious and immediate hazards which can cause serious personal injury or death – WARNING WARNING - identifies hazards or unsafe practices which can result in serious personal injury or death – CAUTION CAUTION - identifies hazards hazards or unsafe practices which can result in minor personal injury or product or property damage – NOTE NOTE - identifies important procedures or requirements that, if not followed, can result in product or property damage
4
WARNING Make sure that the specified electrical ratings are not exceeded under switchgear operating conditions. Keep the manuals accessible to all personnel involved in installation, operation and maintenance. The user’s user ’s pers onnel onne l are ar e res pons ible ibl e fo r al l ma tter s regarding safety in the workplace and correct use of the switchgear. WARNING Alwa ys foll ow t he inst i nstruct ruct ions in t he m anual anua l an d respect the rules of good engineering practice (GEP)! Hazardous voltages can cause serious in jury or deat h! Disc onne ct t he powe r and an d earth e arth live parts before proceeding with any work on the switchgear. Follow the safety regulations in force in the place of installation. CONTACT US If you have any further questions about this manual, our field service team will be pleased to help. See the back cover of this manual for contact information.
2. GENERAL DESCRIPTION SafeRing is a SF 6-insulated ring main unit and SafePlus is a SF 6-insulated compact switchgear for applications in medium voltage distribution networks. SafeRing and SafePlus offer a sealed stainless steel tank which contains all the live components and switching functions. The transformer is protected either by a switch fuse combination or a vacuum circuitbreaker. The unit s are deli vered from the factory ready for inst allation. SafeRing can be supplied as a 2, 3 or 4-way unit in standard configurations with additional equipment according to customer specification. Availabl e co nfig urations: DeF, CCF, CCC, CCCF, CCFF, DeV, CCV, CCCC, CCCV, CCVV. SafePlus has a unique flexibility due to its extendibility and the possible combination of fully modular and semi-modular configurations, with a maximum of 5 modules in one SF 6-tank. The unit s are deli vered from the factory ready for inst allation.
SafeRing 3-way unit CCV
Routine tests are carried out on all units/ modules before dispatch. No special tools are required for installing the equipment. Availabl e mo dules are : C - Cable switch F - Switch fuse disconnector D - Direct cable connection De -Direct cable connection with earthing V - Vacuum circuit- break er Sl - Busbar sectionalizer, load break switch Busrise needed when SL on right side of SF6 tank Sv -Busbar sectionalizer, vacuum circuit-breaker Sv always together with busrise (total width=650 mm) Be - Busbar earthing M - Metering cubicle V20, V2 5 - Vacuum circu it-break er 2 0/25kA Sv20, Sv25 - Busbar sectionalizer, vacuum circuit-breaker 20/25kA. SafeRing / SafePlus with switch fuse combination in compliance with IEC 62271-105. With this unit the transformer will be protected by currentlimiting HV fuses in combination with a load break switch. The load break swit ch is equipped with a st ored spring energy mechanism which can be tripped by the fuse striker pin. SafeRing / SafePlus with vacuum circuit-breaker in compliance with IEC62271-100 With this unit the transformer will be protected by a vacuum circuit-breaker combined with relays and current transformers. The standard relays are ba sed on digital technology and do not require an external power supply. Further information can be found in the p roduct catalogue for SafeRing and SafePlus, 1VDD006104 GB.
5
2.1 OUTER ASSEMBLY
5 17
6
7
8 9
1 ���
SafePlus
2 3 4
18
10 11
12
13
15
14
16
6
Upper front cover 1. Manometer 2. Nameplate of module 3. Short circuit indicator 4. Capacitive voltage indication 5. Load break / earthing switch position indicator 6. Push buttons close/open operation 7. Charged spring indicator 8. Self-powered protection relay 9. Vacuum circuit-breaker position Lower front cover 10. Nameplate of switchgear 11. Fuse blown indicator 12. Disconnector / earthing switch position indicator 13. Capacitive voltage indication Cable compartment cover 14. Cable compartment cover standard 15. Cable compartment cover with inspection window 16. Support bar ( removable) Side cover 17. Lifting lug 18. Operating handle (suspended on the side wall, by default on the right-hand side wall)
3. TRANSPORT AND HANDLING The unit s are deli vered from the factory ready for inst allation.
Weight table Maximum weights for standard SafeRing 2-way DeV
300 kg
2-way DeF
300 kg
3-way CCV
450 kg
3-way CCF
450 kg
4-way CCCV
600 kg
4-way CCCF
600 kg
4-way CCVV
600 kg
4-way CCFF
600 kg
3-way CCC
450 kg
4-way CCCC
600 kg
SafePlus
Max angle 60 o
Standard 1-way
150 kg
2-, 3- and 4-way
as for SafeRing
5-way
750 kg
M - metering module incl. trafo
250 kg
Mt - metering tariff module incl. trafo
350 kg
The weig hts are without additio nal equi pmen t, except for transformers for M- and Mt-modules SafeRing / SafePlus is fitted with lifting lugs, but can also be moved on a pallet with a forklift truck. Make sure to secure the switchgear. NOTE: Use only approved slings when lifting. Maximum angle on lifting lugs is set to 60 o.
3.1 BY RECEIVING INSPECTION Upon receiving the SafeRing / SafePlus please check that the delivered equipment has not been damaged during transport. If any such damage has occurred, a claim must be submitted to the carrier immediately. After u npac king , the f ollo wing must be checke d: 1. Operating handle – one piece should be included, normally fixed on right-hand side. 2. Check that the pointer on the pressure indicator is in the green area. 3. Carry out a function test on the mechanical parts. 4. Visual check of the switchgear. Any faults or omis sion s must be reported immediately to the supplier. 3.2 STORAGE SafeRing / SafePlus must be stored under cover in a dry and well ventilated area until it is installed and put into operation.
7
4. TECHNICAL DATA 4.1 ELECTRICAL DATA SAFERING C-module SafeRing
Switch disconnector
Rated voltage
kV
F-module Switch-fuse combination
Earthing switch
12/17,5/24
12/17,5/24
6)
12/17,5/24
12/17,5/24
12/17,5/24
28 /38/50
28 /38/50
28 /38/50
286) /38/50
Impulse withstand voltage
95/95/125
95/95/125
95/95/125
95/95/125
95/95/125
95/95/125
630/630/630
active load
A
630/630/630
closed loop
A
670/670/670
off load cable charging
A
141/141/141
off load transformer
A
earth fault
A
205/160/160
earth fault cable charging
A
117/91/91
200
6)
12/17,5/24
28 /38/50
A
6)
Earthing switch
28 /38/50
Rated current
6)
Vacuum circuit-breaker
Earthing switch
Power frequency withstand voltage kV kV
6)
V-module
1)
200/200/200
Breaking capacities:
short-circuit breaking current Making capacity
20/20/20
kA kA
Short time current 0,5 sec
3)
Short time current 1 sec 4) 5)
Short time current 3 sec
52,5/40/40
52,5/40/40
see
2)
see
2)
16/16/16 12,5/12,5/12,5
kA
40/40/40
40/40/40
16/16/16
kA
5/5/5
kA
21/16/16
16/16/16
21/16/16
16/16/16
1)
2) Depending on the current rating of the fuse-link Limited by high voltage fuse-links 3) Maximum rating for bushings Interface A (200 series plug-in) Maximum rating for bushings Interface B (400 series plug-in) 5) Maximum rating for bushings Interface C (400 series bolted) 6) GOST version is available with 42kV power frequency withstand voltage 4)
4.2 ELECTRICAL DATA SAFEPLUS
C-module SafePlus
Rated voltage
kV
F-module
V-module
V20/V25 module
Switch disconnector
Earthing switch
Switch-fuse combination
Earthing switch
Vacuum circuitbreaker
Earthing switch
Vacuum circuitbreaker
Earthing switch
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/24
12/24
1)
1)
1)
P ow er f re qu en cy w it hs ta nd v ol ta ge
kV
2 8 /38/50
28 /38/50
28 /38/50
28 /38/50
28 /38/50
28 /38/50
28 /50
28 1) /50
Impulse withstand voltage
kV
95/95/125
95/95/125
95/95/125
95/95/125
95/95/125
95/95/125
95/125
95/125
Rated current
A
630/630/630
closed loop
A
650/650/650
o ff l oa d c ab le c ha rg in g
A
1 40 /1 40 /1 40
off load transformer
A
earth fault
A
205/160/160
e ar th f au lt c ab le c ha rg in g
A
1 17 /9 1/ 91
short-circuit breaking current
kA
200
1)
2)
1)
1)
1)
630/630/630
630/630
21/16/16
25/20
25/20
65/50
62,5/50
25/21
25/21
25/21
25/21
Breaking capacities:
M ak in g c ap ac it y
kA
Short time current 0,5 sec Short time current 1 sec
5)
6)
Short time current 3 sec 7) 1)
20/20/20
6 5/ 52 ,54) /52,5
62,5/52,5 4) /50
see
3)
see
3)
12,5/12,5/12,5
kA
52,5/40/40
52,5/40/40
16/16/16
kA
25/-/-
25/-/-
kA
25/214) /21
25/21 4) /21
5/5/5
16/16/16 21/16/16
21/16/16
GOST version is available with 42kV power frequency withstand voltage 2) Depending on the current rating of the fuse-link 3) Limited by high voltage fuse-links Tested at 15,2 kV 5) Max. rating for bushings Interface A (200 series plug-in) 6) Max. rating for bushings Interface B (400 series plug-in) 7) Max. rating for bushings Interface C (400 series bolted) 4)
8
5. INSTALLATION NOTE The floo r mu st be well leveled and the unit must be fixed by means of anchor bolts in accordance with the dimensional drawing for the number of modules or units as appropriate.
NOTE The tools requi red for inst alla tion and main tena nce of the switchgear are specified in the tool list in chapter 20.6.
The tolerance o f the evenn ess is m axim um 1 mm per meter.
5.1 STANDARD 3-WAY SWITCHGEAR
Unit
A
B
C
1-way
298
337
371
2-way
623
662
696
3-way
948
987
1021
4-way
1273
1312
1346
5-way
1598
1637
1671
9
5.2 3-WAY SWITCHGEAR WITH BASE FRAME (AFL)
Unit
A
B
C
1-way
NA
NA
NA
2-way
623
662
696
3-way
948
987
1021
4-way
1272
1312
1346
5-way
1597
1637
1671
10
5.3 3-WAY SWITCHGEAR WITH BASE FRAME (AFLR)
indicates cable entry Unit
A
B
C
1-way
NA
NA
NA
2-way
623
662
696
3-way
948
987
1021
4-way
1273
1312
1346
5-way
1598
1637
1671
81/87*
Distance between two units which are connected to each other by means of external busbars *) Top extension: 8 mm / 81 mm Side extension: 14 mm / 87 mm
8/14*
11
6 2 6 1
6 8 7 1
5 4 0 1
38 AFLR basef rame * Dimensions for 290 mm baseframe
Standard switchgear installed on cable trench 12
39
Base frame, height 450 mm
5 8 8
38
39
Base frame, height 290 mm
Low version switchgear installed on cable trench
6. DIMENSIONS
Height (mm)
Standard switchgear e L m F a r A f C e s A a I / b C t A I u o n h i o t N w
h t i e w m L a r F f A e C s a A I / b C m A I m n 0 o 9 N 2
h t i e w m L a r F f A e C s a A I / b C m A I m n 0 o 5 N 4
e m a r f h t i e s w a b R L m F A m C 0 9 A I 2
e L m F a r A f C e s A a I / b C t A I u o n h i o t N w
h t i e w m L a r F f A e C s a A I / b C m A I m n 0 o 9 N 2
h t i e w m L a r F f A e C s a A I / b C m A I m n 0 o 5 N 4
1336
1626
1786
2002
2002
1100
1390
1550
Top conne ction witho ut de ad e nds
1466
1756
1916
2002
2002
1230
1520
1680
Top conne ction with dead ends
1561
1851
2011
2002
2002
1325
1615
1775
External busbars
1591
1881
2041
2002
2041
1355
1645
1805
Busbar cover
1651
1941
2101
2002
2101
1415
1705
1865
Standard
1460
1750
1910
2002
2002
1224
1514
1674
Top connec tion witho ut d ead e nds
1466
1756
1916
2002
2002
1230
1520
1680
Top connec tion with dead ends
1561
1851
2011
2002
2011
1325
1615
1775
External busbars
1591
1881
2041
2002
2041
1355
1645
1805
Busbar cover
1651
1941
2101
2002
2101
1415
1705
1865
Standard
1806
2096
2256
2096
2256
1570
1860
2020
Top connec tion witho ut de ad en ds
1806
2096
2256
2096
2256
1570
1860
2020
Top connec tion with dead ends
1806
2096
2256
2096
2256
1570
1860
2020
External busbars
1806
2096
2256
2096
2256
1570
1860
2020
Busbar cover
1806
2096
2256
2096
2256
1570
1860
2020
Standard
2036
2326
2486
2326
2489
1800
2090
2250
Top connec tion witho ut d ead e nds
2036
2326
2486
2326
2486
1800
2090
2250
Top connec tion with dead ends
2036
2326
2486
2326
2486
1800
2090
2250
External busbars
2036
2326
2486
2326
2486
1800
2090
2250
Busbar cover
2036
2326
2486
2326
2486
1800
2090
2250
Standard without low voltage compartment or top entry box
with top entry box (124 mm)
with low voltage compartment (470 mm) *)
with low voltage compartment
Lower version switchgear
(700 mm) *)
e m a r f h t i e s w a b R L m F A m C 0 5 A I 4
*) For V-module 12kV/25kA and 24kV/20kA height of low voltage compartment is 570 / 800 mm, so 100 mm has to be added to the total switchgear heights in the table
13
7. INTERNAL ARC CLASSIFICATION (IAC) During development of all ABB products, focus is put on personnel safety. This is why the SafeRing/SafePlus portfolio was designed and tested for a variety of internal arc scenarios in order to withstand an internal arc of the same current level as a maximum short circuit current. The tests show that the metal enclosure of Safering/SafePlus switchgear is able to protect personnel standing close to the switchgear during an internal arc fault.
kA 2 s
Causes and effects of IAC An inte rnal arc is a hi ghly unli kely fault, alth ough it can theoretically be caused by various factors, such as: − Insulation defects due to quality deterioration of the components. The reasons can be adverse environmental conditions and a highly polluted atmosphere. − Inadequate training of the personnel in charge of the installation, leading to incorrect installation of the cables. − Breakage or tampering of the safety interlocks. − Overheating of the contact area, e.g. when the connections are not sufficiently tightened. − Short circuits caused by small animals that have entered into the cable compartment (i.e. through cable entrance). The energy produced by the internal arc ca uses the foll owin g phenomena: − Increase of the internal pressure. − Increase of the temperature. − Visu al a nd a cous tic effects. − Mechanical stresses on the switchgear structure. − Melting, decomposing and evaporation of materials.
Melting of Steel Melting of Copper Melting of Cables
0
100
200
500 ms
Arc dura tion and damage caused
Tested according to IEC standard 62271-200 The capa bili ty of S afeRing/Saf ePlus switc hgear to withs tand an internal arc is proven by the type test according to Internal arc classification (IAC) as described in the standard IEC 62271-200 as follows: Accessibili ty: A, B or C (swit chgear) A=Accessible t o autho rized p ersonnel only B=public access C=not accessible due to installation F-Front=Access from the front L-Lateral=Access from sides R-Rear=Access from the rear
R
L
All test speci mens passed the foll owing t est crit eria according to the standards: − Correctly secured doors and covers do not open − No fragmentation of the enclosure occurs within the time specified for the test. Projection of small parts, up to an individual mass of 60 g are accepted − Arcin g does not caus e ho les in t he e nclosure of t he switchgear up to a height of 2 m − Indicators do not ignite due to the effect of hot gases − The enclosure rem ains connecte d to its eart hing point
14
L
F
When installing Ring Main Unit or Compact Switchgear with Internal Arc Classification AFL with ventilation behind the switchgear, the following must be considered: − − − − −
Unit must be equipped with arc proof cable covers. Distance from floor to roof must be minimum 2400 mm Distance from back of unit to wall must be 100 mm Arc shields with height 650 mm m ust be moun ted If unit is freestanding (i.e. distance from back of unit to wall exceeds 100 mm), the area behind the unit must be restricted and not accessible.
*
WARNING Distance from side wall: 20 mm. If installed more than 20 mm from sidewall, an arc shield is required. For easier installation, it is recommended that any switchgear requiring arc shields is installed minimum 300 mm from sidewall.
* Arc shield. Height of arc shield for M-module is 1317 mm
20 - 300 mm Marked area is restricted, but installation is allowed if mounting of arc shield is feasible.
For installation of switchgear with Internal Arc Classification AFL with ventilation down i n cable trench, the following must be considered: − − − − −
Unit must be equipped with arc proof cable covers Distance from floor to roof must be minimum 2000 mm Distance from back of unit to wall must be 100 mm Cable compartment back plate has to be mounted Length of cable trench must be 2000 mm, with an opening of minimum 0,5 m2 − Minimum dimensions of cable trench are 230 x 355 mm * 1100 mm version available as optional solution 15
For installation of switchgear with Internal Arc Classification AFLR with ventilation upwards through exhaust channel, the following must be considered: − − − −
Unit must be equipped with arc proof cable covers Unit can be installed as free standing Minimum height of ceiling: 2600 mm Recommended distance from back wall is 100 mm
*) 290 mm base frame is available as option
16
8. CABLE COMPARTMENT CAUTION In case of interlocked cable compartment, cover can be opened / closed only when earthing switch is in closed position.
NOTE The tools requi red for inst alla tion and main tena nce of the switchgear are specified in the tool list in chapter 20.6.
8.1 STANDARD CABLE COMPARTMENT
8.2 ARC PROOF CABLE COMPARTMENT
Removal of cable cover:
Removal of cable cover:
1. Loosen the screws on the cable cover, pull out and lift cover off.
1. Lift handle to remove the cable cover, pull out and lift cover up.
2. Removal of front section.
2. Removal of front section.
3. Front section removed. A
3. Front section removed. A
B
4. The mid-panel can be removed by unscrewing Ax2 and B.
B
4. The mid-panel can be removed by unscrewing Ax2 and B.
17
8.3 CABLE CONNECTION SafeRing/SafePlus is equipped with external bushings which comply with DIN47636T1 & T2/EDF HN 525-61 for termination of cables. All bushing s are situated in t he s ame heig ht f rom the floo r an d are protected by the cable cover. SafeRing / SafePlus can be supplied with the following bushings for the various type of cubicles: Type of mo dule Bushings
C
F
V
D, De, V20/2 5
Interface A Interface C
X
X
X
X
X
X
Interface A with plug 200 series, In = 200A Adjustable cable su pport bar (addit ional eq uipm ent) .
Interface C with M16 x 2 metric threads 400 series, In = 630A
Cable adapters Adap ters from followi ng m anuf acturers are recom mend ed: ABB Kabeldo n Südkabel Tyco Electronics Raychem Power Systems 3M Euromold NKT cables Please see supplier documentation for details. DANGER The manu fact urer’s installat ion inst ructions mu st be followed. Be sure to lubricate the bushings thoroughly with the silicone supplied. Use only isolated cable connections. Where cables are not connected, the earthing switch must be locked in closed position or the bushings must be fitted with dead end receptacles before the unit is put into operation. 18
Earthing bar
Cable clamp (additional equipment)
9. EXTENSION OF SWITCHGEAR
9.1 EXTERNAL BUSBAR SafeRing and SafePlus can be equipped with an external busbar. See separate instruction manual: 1VDD006006 GB.
� ��
SafePlus
� ��
SafePlus
� ��
SafePlus
� ��
SafePlus
� ��
SafePlus
9.2 SIDE EXTENSION SafeRing and SafePlus can be equipped with a side extension. See separate instruction manual 1VDD006106GB.
10. CURRENT AND VOLTAGE TRANSFORMERS SafeRing and SafePlus can be equipped with current and/or voltage transformers. Installation and maintenance manual: 1VLM000610
19
11. MOTOR OPERATION Switches, vacuum circuit-breakers and earthing switches are operated by mechanisms located behind the front panel. The mechanisms for all the switches and breakers are operated manually with the operating lever (standard), or are fitted with motor operation (additional equipment).
Motor operation can be retrofitted. Use the manuals. All unit s are deli vered with drawings sh owin g the e lectrica l circuits.
The eart hing swit ch and the disc onnectors c an o nly be operated manually. The earthing switches have mechanisms to achieve fault making capabilities. Installation instructions cover the following modules:
3PKE mechanism for load break switch (C-module) 1VDD200001
3PKSE mechanism for load break switch (C-module) 1VDD200002
3PAE mechanism for fuse-switch (F-module) 1VDD200003
2PA mechanism for circuit-breaker (V-module) 1VDD200004
20
12. RELAY AND CURRENT TRANSFORMERS A p rotec tion rel ay is installed in each v acuum ci rcuit -bre aker module. The cables from the protection relay to the current transformers are installed from the factory and are terminated in the cable compartment ready for connection to the three current transformers supplied. CAUTION Before installation: Check that the three current transformers have been delivered and that they are all of the same type. Check that the current transformers are of the correct type, with the correctly rated transformer ratio, for the distribution transformer’s rated current and for the adjustment range on the protection relay (see protection relay manual).
5 7
60 107
107
Installation of current transformers The cabl e sh ield ing is led back through the cent er hole and earthed, as shown in figure.
Each current transformer must be mounted onto its high voltage cable before the cable termination is fitted. WARNING The eart h sh ield on t he cable must be led back through the center hole in the current transformer (see figure on left) and earthed on the earthing bar in the cable compartment. A mounting plate for the current transformers is fitted in the cable compartment. After t he current tran sfor mers have been in stal led in t he unit, the cables from the protection relay are connected. Consult the manual supplied with the protection relay for a description of the connections. SafeRing / SafePlus with vacuum circuit-breakers are delivered with self-powered OC / EF protection relay ABB type REJ 603 V.1,5. Relays with auxiliary voltage SafePlus can be delivered with advanced protection relays: − REF615 (high LV-compartment with hinged door) − REF630 (high LV-compartment with hinged door) − REF611 (high LV-compartment with hinged door) − REF620 (high LV-compartment with hinged door) Separate manuals with examples of settings have been prepared for each of these protection relays.
21
13. PRESSURE INDICATOR SafeRing / SafePlus is usually supplied with a pressure indicator in the form of a manometer. Additionally, it is possible to fit a device for an electric signal if the pressure is low. This requires auxiliary voltage supply. 13.1 GAS PRESSURE SafeRing / SafePlus contain SF 6-gas with a nominal pressure of 1,4 bar absolute at 20 o C.
5. Remove the filling hose and connect the pressure device to check the pressure inside the RMU/switchgear. 6. When the correct pressure of 1,4 bar absolute is obtained, remove the adapter, check that the sealing between the pressure indicator and the valve is smooth and clean, and screw the pressure indicator to the RMU/ switchgear with tightening torque max 45 Nm as shown below.
SafeRing / SafePlus are «sealed for life» and fitted with a temperature-compensated pressure indicator. Pointer in green area - unit has sufficient pressure. Pointer in red area - pressure is too low. WARNING Operation when pressure is too low (pointer in red area): If pointer is in red area, the operation of the switchgear can not be done under live conditions (voltage on). SF6-gas needs to be topped up according to instruction and the filling table on next p age before operation can be done under live conditions. For more detailed description, see instruction manual 1VDD201603
WARNING Replenishment of SF 6-gas in SafeRing/SafePlus Potential risk! Operators must be trained and qualified for SF 6-gas handling The followi ng e quip ment is n eeded: SF 6-gas bottle with manometer and reduction valve, bottle for recovery of SF 6 /air mixt ure, adap ter and pressure meas uring d evice. I t is important that the pressure measuring device shows absolute pressure. If you have a pressure measuring device showing over-pressure, please contact ABB for instructions (NHP 408025). 1. Remove the front cover and if possible the top cover. Unscrew the pressure indicator by unscrewing the hexagon nut as shown on t he figure at the right. 2. Screw the adapter to the valve. The tightening torque is max 45 Nm. 3. Before connecting the hose from the gas bottle to the adapter, the air in the hose must be removed by running SF 6-gas through the hose. The SF 6-gas must b e recovered. 4. When gas is flowing into t he RMU/switchgear, the manometer on the gas bottle has to be observed. When it shows 1,4 bar absolute at ambient temperature 20° Celsius, the gas filling must be stopped. See table for filling pressure on next page.
22
SF 6
Air
CAUTION
Spring-loaded valve
Note! Screw/unscrew on this hexagonal nut only. The pressure indicator can be dismounted from the switchgear without SF6 leakage from the SF 6 tank
1,45
1,4
30 oC SF 6-gas temp
Absolute filling pressure
1,35
20 oC
s b a 1,3 r a B e r u s s e r 1,25 p g n i l i F
10 oC
1,2
o
C
mbar
0
1305
5
1328
10
1352
15
1376
20
1400
25
1424
30
1448
35
1472
40
1496
1,15
1,1
1,05
1 0
0 0 5
0 0 0 1
0 0 5 1
0 0 0 2
Alti tude
13.2 ALTITUDE Max height above sea level for installation without reducing gas pressure is 1500 meters. In the interval from 1500 to 2500 meters, gas pressure has to be reduced according to the above figure. For installation above 2500 meters, please contact ABB for instructions.
Top screw fo r ad justing pressure in higher altitudes
13.2.1
ADJUSTMENT OF GAS PRESSURE IN HIGHER ALTITUD ES Remove the front cover in order to get access to the top of the manometer. On top of the manometer, a screw is situated. Open this screw carefully until the arrow starts moving. When the movement stops, tighten the screw again. Now the pressure is equalized and unless there is a leak (which is very unlikely) the arrow will be positioned at the correct level.
23
14. OPERATION OF THE SWITCHGEAR 14.1 OPERATING CONDITIONS Normal ambient conditions SafeRing / SafePlus is generally equipped for operation/ service in normal indoor conditions in accordance with IEC 62271-1. The foll owin g limit atio ns appl y: Ambient temperature Max. temperature Max. temperature (24-hour average) Min. temperature Humidity Max. average relative humidity measured over 24 hours Max. average relative humidity measured over 1 month
+40°C +35°C - 25°C
95% 90%
Special conditions In accordance with IEC 62271-1, the manufacturer and enduser must agree about special operating conditions which deviate from operation under normal conditions. The manu facturer/ supplie r mu st be c onsu lted in advance if especially difficult operating conditions are involved. When SafeRing/SafePlus is installed more than 1500 meters above sea level, the atmospheric pressure will be lower and the overpressure inside the tank will have t o be reduced. Airfrei ght Units / modules transported by airfreight are delivered with reduced overpressure. For topping up, please see procedure for replenishment of SF 6-gas.
24
Appl ication of the X-ray regulat ions One of the physical properties of vacuum insulation is the possibility of X-ray emissions when the contact gap is open. The specified test performed b y the P hysikalisch -Technische Bundesanstalt (PTB) in Braunschweig demonstrates that the local dosage output of 1 µSv/h at a distance of 10 cm from the touchable surface is not exceeded when the rated voltage is applied. The results are as follows: − Testing of the swit ching device or th e va cuum interrupter to VDE 0671 part 100 or I EC 6 2271-100 at the relevant rated power frequency withstand voltage may only be performed by trained personnel observing the stipulations of the EU basic standard (Stipulation 96/29/Euratom of the senate from 13 May 1996 (ABI.L 159 from 29 June 1996)). − Applica tion of the rate d power frequ ency withsta nd volt age specified for the switching device by VDE 0671 part 100 or IEC 62271-100 is completely safe. − Higher voltages than the rated power frequency withstand voltage or DC test voltage specified in VDE or IEC standards must not be applied! − The cont ainm ent of the above m enti oned loca l do sage output with the vacuum interrupter in the open position is dependent on maintenance of the specified distance between the contacts (which is automatically ensured with correct mechanism function and force transmission). − Safety clearances must be maintained.
WARNING CONTROL AND MONITORING THE GAS SafeRing / SafePlus is a pressure-sealed system that normally does not require special inspections. However, the gas pressure on the manometer should always be checked prior to operation.
14.2 GENERAL WARNINGS AND PRECAUTIONS DANGER Do not walk on the top of switchgear units!
DANGER Switchgear operations must be carried out with the doors closed. WARNING Operations and any type of work must be carried out by t rained and specialized personnel who are familiar with SafeRing/SafePlus and follow all the safety regulations in accordance with the IEC Standards and other regulations in force, as well as any local work regulations and instructions. NOTE The tools requi red for inst allation an d maint enance of the switchgear are specified in the tool list in chapter 20.6.
14.3 PUTTING INTO SERVICE 14.3.1 PREPARATORY WORK Before connection to the medium voltage network The following work must be carried o ut i n prepar atio n fo r putting into service: − Check the general condition of the switchgear for any damage or defects. − Visu ally insp ect the swit ching devices, cable bushi ngs, insulating parts, etc. − Check the paintwork for any damage and, where necessary, paint over scratches to avoid corrosion − Remove all residues of materials, foreign objects and tools from the switchgear. − If necessary, clean the switchgear and remove any traces of greasy or sticky dirt. − Correctly remount all covers etc. removed during assembly and testing procedures. − Switch the auxiliary and control voltage on. − Carry out testing operations on switching devices either manually or using electrical control, simultaneously observing the relative position indicators. − Check the mechanical and electrical interlocks for effectiveness, without using force. − Check the SF6 gas pressure of the tank. It needs to be at green level before operating the switchgear. − Instruct local operators regarding the basic features for correct use of the switchgear.
Other checkpoints Depending on the allocation of responsibilities, it may also be necessary to check the following equipment in the vicinity of the switchgear: − − − − − − −
Power cables Auxiliary c ables Auxiliary p ower source Remote control system Complete earthing system Switchgear installation room equipment Switchgear installation room characteristics: − Pressure resistance in the case of an arc fault − Ventil atio n − Temperat ure − Humidity
14.4 START-UP Instructions − Comply with all relevant safety regulations. − Ensure that the switch-disconnectors, circuit-breakers or fuse-switches in the configuration are in the OPEN position. − Energize the power supply feeders. − Connect the switchgear step by step, observing the signals and indicators. − Where necessary, check that the conductors are in phase when there are several incoming feeder cables and switchgear sections. − Carry out all measurements and check that all functions that depend on the medium voltage power supply are connected. − Check there are no irregularities of any kind.
25
15. OPERATION All swit ches can be o pera ted with the included operating handle. Internal mechanical interlocking between the switch d isconnector/isolator and the associated earthing switches prevents incorrect operation. For detailed interlocking description, see dedicated overview for each module in catalogue 1VDD006104 GB.
15.1 OPERATION OF CABLE SWITCH
The operati on o f the s witc h disco nnector/circuit-breaker and earthing switches can be further interlocked by means of a padlock. The eart hing swit ches are oper ated by a sn ap a ctio n mechanism, which ensures fast closing. The earthing switch is closed by turning the operating handle clockwise. Turning the operating handle anti-clockwise opens the switch.
An anti -refl ex s ystem, standard on all oper atin g handles, prevents the immediate re-operation of switches.
Switch disconnector: Close: Turn the operating handle clockwise. Open: Turn the operating handle anti-clockwise.
Earthing switch: Close: Turn the operating handle clockwise. Open: Turn the operating handle anti-clockwise.
26
15.2 OPERATION OF VACUUM CIRCUIT-BREAKER
B
The isolato r in the V-module can only be opened afte r the circuit-breaker is opened. Then the circuit-breaker can be closed for testing purposes.
A
C
D
Mechanical position indicators: A: Green push-button closes the switch B: Red push-button opens the switch C: Mechanical position indication, circuit-breaker open D: Mechanical position indication, earthing switch closed
Switch disconnector: Close: Turn the operating handle clockwise. Open: Turn the operating handle anti-clockwise.
Vacuu m circu it-brea ker: Charging springs: Turn the operating handle clockwise to charge the closing and the opening spring. Close: Push the green button (A) Open: Push the red button (B)
Earthing switch: Close: Turn the operating handle clockwise. Open: Turn the operating handle anti-clockwise.
27
15.3 OPERATION OF VACUUM CIRCUIT-BREAKER - 12kV/25kA, 24kV/20kA
Push button - vacuum circuit-breaker (OFF) Push button - vacuum circuit-breaker (ON) Indication spring charged / discharged
Vacuum circuit-breaker position indicator Counter - closing and opening operations Spring-charging lever
Before o peratin g of the vacuum circuit-breaker, che ck th at the spring is charged. If t he spring is not charged, it can be charged by means of the charging lever. The spring is fully charged when the indicator turns to charged spring (yellow symbol, about 10 operations needed to fully charge the spring). CAUTION If t he vacuum circuit-breaker is equippe d wit h mot or operation (optional) it is not necessary to charge the spring by hand. The motor starts charging the spring automatically as soon as the auxiliary voltage is switched on.
Close: Push green (ON) button Open: Push red (OFF) button Note: the downstream disconnector is mechanically interlocked with the vacuum circuit-breaker. For operation of the downstream disconnector and earthing switch, see previous page.
28
15.4 OPERATION OF FUSE-SWITCH DISC ONNECTOR WARNING For correct function of F-module, it is required to use fuses suitable for rating of protected distribution transformer, see fuse selection table on following pages. Use of improper fuse can void the warranty. B
15.5 INSTALLATION AND REPLACEMENT OF FUSE-LINKS A red indic ator belo w the f use symb ol on the lower front pane l indicates that at least one fuse-link has blown. Fuse links are replaced as shown in the sequence of illustrations. Switchfuse configurations are supplied without fuse-links installed. When installing fuse-links for the first time, follow t he sequence of illustrations 2-9.
A
1. Blown fuse indicator.
Switch-fuse disconnector: Charging springs: Turn the operating handle clockwise to charge the closing and the opening spring. Close: Push the green button (A) Open: Push the red button.(B) The circu it-break er c an b e tripp ed by the prot ection relay, while in switch-fuse configurations the fuse switch disconnector can be triggered by the fuse striker pin if an over-current, a short-circuit or an earth-fault occurs.
2. Close earthing switch by tur ning operating handle clockwise.
29
3. Unscrew the fuse panel. 4. Tilt out the fuse panel to gain access to fuse canisters - If safety wires are installed, make sure they are latched at both ends before continuing to step 5.
7. Fix the fuses to the fuse cover using the contact screw. This point is not applicable if fuse fastening is spring based.
5. Applying the operating handle and tur ning anti-clockwise opens the fuse canisters. - After initial opening with safety wires, reattach the fuse panel for easy detachment of safety wires.
8.Turn the handle on the fuse cover clockwise to close and seal the fuse canister. Use the operating handle.
- The striker must point out from the fuse canister for the fuse to function properly.
9. Close the fuse panel. The switches are ready for operation.
6. Pull out the fuse handle. The fuses are firmly fixed in the fuse cover. 30
15.6 FUSE SELECTION TABLE 15.6.1 FUSE SELECTION TABLE - CEF Fuse-link 100%
Transformer rating (kVA)
rated voltage
Un (kV)
25
50
75
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
3
16
25
25
40
40
50
50
80
100
125
160
160
3,3
16
25
25
40
40
50
50
63
80
100
125
160
4,15
10
16
25
25
40
40
50
50
63
80
100
125
160
5
10
16
25
25
25
40
40
50
50
63
80
100
160
160
5,5
6
16
16
25
25
25
40
50
50
63
80
100
125
160
6
6
16
16
25
25
25
40
40
50
50
80
100
125
160
160
6,6
6
16
16
25
25
25
40
40
50
50
63
80
100
125
160
10
6
10
10
16
16
25
25
25
40
40
50
50
80
80
125
125
11
6
6
10
16
16
25
25
25
25
40
50
50
63
80
100
125
12
6
6
10
16
16
16
25
25
25
40
40
50
63
80
100
125
13,8
6
6
10
10
16
16
25
25
25
25
40
50
50
63
80
100
15
6
6
10
10
16
16
16
25
25
25
40
40
50
63
80
100
17,5
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
80
20
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
63
22
6
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
24
6
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
7,2 kV
12 kV
17,5 kV
24 kV
- The table is based on using fuses type ABB CEF - Normal operating conditions with no overload - Ambient temperature -25 oC - +40oC
Fuse-link 120%
Transformer rating (kVA)
rated voltage
Un (kV)
25
50
75
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
3
16
25
25
40
40
50
63
80
100
125
160
3,3
16
25
25
40
40
50
63
80
80
100
125
4,15
10
16
25
25
40
40
50
63
80
80
100
125
5
10
16
25
25
25
40
40
50
63
80
80
125
160
5,5
6
16
16
25
25
25
40
50
50
80
80
100
125
160
6
6
16
16
25
25
25
40
40
50
63
80
100
125
160
6,6
6
16
16
25
25
25
40
40
50
63
80
80
100
125
10
6
10
10
16
16
25
25
25
40
40
50
63
80
80
125
11
6
6
10
16
16
25
25
25
25
40
50
50
80
80
100
125
12
6
6
10
16
16
16
25
25
25
40
40
50
63
80
100
125
13,8
6
6
10
10
16
16
25
25
25
25
40
50
50
80
80
100
15
6
6
10
10
16
16
16
25
25
25
40
40
50
63
80
100
17,5
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
80
20
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
80
22
6
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
24
6
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
7,2 kV
12 kV
17,5 kV
24 kV
- The table is based on using fuses type ABB CEF - Normal operating conditions with 20% overload - Ambient temperature -25 oC - +40oC
31
15.6.2 FUSE SELECTION TABLE - CEF-S d e t a r r ) e V k m r ( o e f s g a n l t a r o T v
Transform er r ating (kVA) 25
50
75
100
125
160
200
250
315
400
500
630
Fuse-link rating In (A)
3
16
25
40
50
3.3
16
25
40
50
50
4.15
16
20
40
40
50
5
10
20
25
40
40
50
5.5
10
20
20
40
40
40
d e t ) a r V k k ( n i l e - g e t a s l u o F v
h t g n e l k n i l e s u F
) m m (
Catalogue No. CEF-S-TCU
“ e „
50 6/12
Catalogue No. CEF-S
292
10A:1YMB531011M0001
10A:1YMB531861M0001
16A:1YMB531011M0002
16A:1YMB531861M0002
20A:1YMB531011M0003
20A:1YMB531861M0003
25A:1YMB531011M0004
25A:1YMB531861M0004
40A:1YMB531011M0005
40A:1YMB531861M0005
50A:1YMB531011M0006
50A:1YMB531861M0006
10A:1YMB531012M0001
10A:1YMB531862M0001
16A:1YMB531012M0002
16A:1YMB531862M0002
20A:1YMB531012M0003
20A:1YMB531862M0003
6
10
16
20
25
40
40
50
6.6
10*
16
20
25
40
40
50
50
10
10*
10
16
20
20
25
40
40
50
11
10*
10
16
20
20
25
40
40
40
50
12
10*
10
16
16
20
20
25
40
40
50
13.8
10*
10*
16
16
16
20
20
40
40
40
15
10*
10*
10
16
16
20
20
25
40
40
17.5
10*
10*
10
16
16
20
20
20
40
40
40
20
10*
10*
10*
10
16
16
20
20
25
40
40
22
10*
10*
10*
10
16
16
20
20
20
40
40
40
25A:1YMB531012M0004
25A:1YMB531862M0004
24
10*
10*
10*
10
16
16
16
20
20
25
40
40
40A:1YMB531012M0005
40A:1YMB531862M0005
40
80
125
160
160
200
250
250
300
400
400
800
k n i l e s u f
) A ( e d G i s g . x V L a t M a
The table was calcu late d accord ing to standard s IEC 6 0787 and IEC 62271-105. The following transformer and switchgear work conditions were assumed: – Maximum long-lasting transformer overload - 120% – Magnetizing inrush current for transformers up to and including 630kVA - 12 x In during 100ms – Magnetizing inrush current for transformers above 630kVA - 10 x In during 100ms – Standard ambient working conditions for SafeRing / SafePlus switchgear (most important: ambient temperature -25 ºC to +40 ºC),
32
10/24
442
For ratings marked with “*” transformer maximum short-circuit current at LV side, transferred to HV side, is below fuse-link minimum breaking current I3. The tabl e ab ove details the rate d cu rrent of a pa rtic ular fuse link for a given line voltage and transformer rating. For different criteria, the fuse selection must be recalculated.
16. METERING MODULE DANGER! Make sure there is no voltage in the busbars and cable terminals and that the risk of reconnection is eliminated in all units. Any remote control must also be prevented.
Turn 90 o to open 2. Use handles to lift door first up (vertical), then pull the door out (horizontal).
Front door locked: 1.1 With padlock: Remove padlock, then turn blocking plates 90°. 1.2 With key lock: Unlock door by using the key for the p anel door.
3. Remove plastic cover which is placed b ehind front door.
4. Pay attention to label placed inside every metering module DANGER Alwa ys check volt age presence befo re start of any work inside M-module
12kV with HV fuse
NOTE Ensure that HV fuse / dummy fuse is inserted p roperly into both upper and lower fuse holder
24kV with HV fuse, 12 and 24kV with dummy fuse
Max. tightening torque: 20 Nm
33
17. CAPACITIVE VOLTAGE INDICATORS Each module of switchgears is equipped with a capacitive voltage indicator in accordance with either IEC 61958 (VPIS) or IEC 61243-5 (VDS). 17.1 VOLTAGE INDICATORS VPIS VPIS in dica tors are u sed to indi cate the presence of s ervice medium voltage. WARNING The indi cati on o f VP IS alone is not sufficient to prove that the system is dead: if operating procedures make it mandatory, relevant voltage detectors according to IEC 61243-1, IEC 61243-2 and IEC 61243-5 shall be used. The energize d state of the unit is indi cate d by a flas hing ligh t with frequency of repetition of at least 1 Hz. NOTE Under very bright lighting it may be necessary to improve visibility by additional means. OPERATING TEMPERATURE The VPIS wi ll o pera te reliably over a tempe rature range of –25° to +50°C. PHASE COMPARISON AND TESTING OF VPIS Each phase of the integrated voltage presence indicating system has a connection point on the front panel, which can be used to perform phase comparison and to test the voltage presence indicator. THRESHOLD VALUES FOR VOLTAGE PRESENCE INDICATION The indication corresponding t o “volt age present” appears when the actual line-to-earth voltage is between 45% of the nominal voltage and the rated voltage. The indication corresponding to “voltage present” does not appear when the actual line-to-earth voltage is less than 10% of the nominal voltage.
34
Capacitive voltage indicator type HR
17.2 VOLTAGE INDICATORS VDS VDS is u sed to detect the prese nce or abse nce of medi um voltage according to IEC 61243-5. The VDS are b ased on t he H R sy stem . The s ystem c onsi sts of a fixed device, installed in the switchgear, coupled with a mobile device to visually detect the presence or absence of service voltage and phase balance and on which the indicator lights are installed. The state of v oltage prese nt is v isually indicat ed w ith at least 1Hz repetition frequency. The „voltage i ndic ator s“ which are recommende d are the VIM1 type used as a mo bile devi ce and VIM3 type us ed as a fixed and mobile device. Both are made by Maxeta. The „voltage i ndic ator s“ have a ma ximu m op erating volt age threshold of 90 V and a maximum current threshold of 2.5 uA at 50Hz. OPERATING TEMPERATURE The VDS work s rel iabl y wi th a te mper ature range from –25°C to +50°C. PHASE COMPARATOR The phase comparat or d etects the balance or u nbal ance of the phases between the interface and/or the test p oints. Detection is by means of a luminous indicator. The recommended phas e co mparato r of the VDS is the PCMHR type, made by Maxeta. It consists of a 1.4 m long t est cable.
Phase sequence test
THRESHOLD VALUES FOR VOLTAGE INDICATION When the line-earth voltage is between 45% and 120% of rated voltage, indication of „voltage present“ must appear. The „voltage p resen t“ indicat ion must not appear when the line-earth voltage is less than 10% of the rated voltage. 17.3 VOLTAGE INDICATORS VDS LRM With VDS LRM system, the following can be indicated: -Overvoltage -Nominal voltage presence -Isolation problems -No voltage -Broken lead indication (Optional feature) Indication is done visually on the display. Contact the product manufacturer for detailed descriptions and manuals.
35
18. ADDITIONAL EQUIPMENT 18.1 LOW-VOLTAGE CONNECTIONS Auxiliary c ontacts (2N O+2N C) can be s upplied to indicate switch positions on all switches/breakers. Access to the low-voltage connections is obtained by removing the top front panel. A shunt trip coil (AC or DC) can be fitted on the transformer switch/breaker. 18.2 REMOTE CONTROL AND MONITORING UNIT SafeRing can be equipped with an integrated remote control and monitoring unit (see picture left). This unit is p re-engin eered and can be deli vered and inst alle d as a retrofit solution or complete from factory. SafePlus can have the same equipment but needs an additional low voltage compartment on top of the switchgear.
36
19. CABLE TESTING Cable testing and locating cable faults are preformed in three ways: 1. Directly on the testing points if they are fitted on the unit. 2.1 Directly on the cable connectors with the cable connected to the switchgear. 2.2 Cable connector dismounted from the switchgear. CAUTION Cable testing must be carried out in accordance with the cable manufacturer’s recommended practice.
19.1 PROCEDURE FOR SWITCHGEAR WITH TEST POINTS 1. Open switch disconnector. 2. Check voltage status. 3. If voltage is not present, close the earthing switch. 4.Connect the testing equipment on top of the testing points which hold the earth bar (B). 5. Remove the earth triangle and perform the test. Respect maximum test voltage levels as detailed in table below. 6. Refit the earth triangle. T ightening torque: 25 Nm. 7. Disconnect test equipment.
DANGER Remember that the cable has two ends. Both ends of the cable need to be isolated. This is typically done by opening the disconnectors of SafeRing SafePlus switchgears connected to the cable. The free end of the tested cable needs to be secured against accidental access. CAUTION Sometimes cable testing through the busbar of the switchgear is preferred. This way several sections of cable can be tested at the same time. This is feasable, but remember the following limitations: − DC and VLF voltages must not be applied to voltage transformers and surge arresters.
Maximum cable test voltages when testing cables using the cable test points of the switchgear Rated voltage of the switchgear
Ur (kV rms)
12kV
17,5kV
24kV
Time
Power frequency cable test voltage
Uct(ac) (kV rms)
12kV
17,5kV
24kV
15 min.
DC cable test voltage
Uct(dc) (kV peak)
24kV
34,8kV
40kV
15 min.
VLF cable test volta ge ( Sine- wave, 0,1Hz )
Uct(V LF) ( kV r ms)
18kV
26,1k V
28kV
15 mi n.
VLF cable test volta ge ( Cosine -rect angul ar, 0,1Hz
Uct(V LF) ( kV p eak)
25,5 kV
36,9k V
40kV
15 mi n.
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19.2 PROCEDURE FOR TESTING DIRECTLY ON THE CABLE CONNECTOR WITH THE CABLE CONNECTED TO THE SWITCHGEAR 1. Open switch disconnector. 2. Check voltage status. 3. If voltage is not present, close the earthing switch. 4. Open cable compartment cover. 5. Connect test rod or test lead to cable connector, keeping the cable connected to the switchgear. 6. Open earthing switch and perform the test. Respect maximum test voltage levels as detailed in table below. 7. Close the earthing switch. 8. Disconnect the test equipment. 9. Complete the cable connector with insulating plugs. 10. Refit cable compartment cover.
19.3 PROCEDURE FOR TESTING DIRECTLY ON THE CABLE CONNECTOR WITH THE CABLE DISCON NECTED FROM THE SWITCHGEAR 1. Open switch disconnector. 2. Check voltage status. 3. If voltage is not present, close the earthing switch. 4. Open cable compartment cover. 5. Remove cable connector from the switchgear. 6. Connect test rod or test lead to cable connector. 7. Perform the test respecting maximum test voltage levels as detailed in instructions from cable supplier and cable connector supplier. When the cables are disconnected at both ends, the cable testing is independent from the switchgear. Procedures and test values are determined by the cable, cable terminations and test equipment. Test procedure and methods must follow recommendations and limitations related to the cable, cable terminations and test equipment. 8. Disconnect test equipment. 9. Refit cable connector to switchgear. 10. Refit cable compartment cover.
Maximum cable test voltages when testing directly on the cable connector with the cable connected to the switchgear Rated voltage of the switchgear
Ur (kV rms)
12kV
17,5kV
24kV
Time
Power frequency cable test voltage
Uct(ac) (kV rms)
12kV
17,5kV
24kV
15 min.
DC cable test voltage
Uct(dc) (kV peak)
24kV
34,8kV
48kV
15 min.
VLF cable test volta ge ( Sine- wave, 0,1Hz )
Uct(V LF) (kV r ms)
18kV
26,1k V
36kV
15 mi n.
VLF cable test volta ge ( Cosine -rect angul ar, 0,1Hz
Uct(V LF) (kV p eak)
25,5k V
36,9k V
51kV
15 mi n.
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20 SERVICE AND MAINTENANCE 20.1 GENERAL WARNINGS AND CAUTIONS WARNING Pay attention to the following safety warnings: Preparing the switchgear for safe assembly 1. For each case, set safe working conditions with the utility safety officer. 2. Make sure that national safety regulations are followed. 3. Make sure there is no voltage in the busbars and cable terminals and that the risk of reconnection is eliminated in all units. Any remote control must also be prevented. 4. Make sure that auxiliary circuits are also disconnected from all possible power supply sources (including instrument transformers) TOOLS REQUIRED − Tool list as spec ified under chapter 20.6 − Vacuum cleaner − Cleaning cloths − Mild alkaline cleaning agent - Do not use trichloroethane, carbon carbotetrachloride or any kind of alcohol, etc. for cleaning − Clean water − Silicone liquid - In special cases, insulating surfaces can be covered with a thin layer of silicone liquid such as DC200/100CS or similar − Instruction manuals − Test equi pmen t MAINTENANCE INSTRUCTIONS Maintenance serves for preserving trouble-free operation and achieving the longest possible working life of the switchgear. It comprises the following closely related activities: − Inspection: Determination of the actual conditions − Servicing: Measures to preserve the specified conditions − Repairs: Measures to restore the specified conditions The time in terv als for maintenance work to be carri ed out always depend on the operating conditions of the switchgear and, above all on the mode of operation, the number of rated and short-circuit current switching operations, ambient temperature, pollution, etc. The main tena nce intervals a nd m easu res t o b e ta ken that are given in table below are recommended for SafeRing/SafePlus under normal service conditions. Three year intervals are recommended for all maintenance measures in more demanding conditions (such as areas with high pollution levels). OTHER IMPORTANT INSTRUCTION MANUALS The operati on o f al l protectio n rel ays shou ld be checked in accordance with the manufacturer’s instructions. All components in t he S F 6 tank are maintenance-free for the declared life expectancy of the product. The tank is made of stainless steel.
20.2 MAINTENANCE INTERVALS We recommend carrying out the maintenance work at the following intervals: Activ ity p erfor med
Accor ding to se ction
Time inter val i n yea rs
Inspection
19.3
5
Service
19.4
As required
Repairs
19.5
As required
2)
2) 3)
Under more demanding service conditions, we recommend shortening
this interval appropriately. 3)
According to the results of the inspection.
Other services may be required, as when max number of operations is reached, please contact ABB to order inspection.
NOTE Under abnormal operating conditions (including adverse climatic conditions) and/or particular environmental conditions (among which, heavy pollution and aggressive atmosphere), inspection at shorter intervals may be necessary. 20.3 INSPECTION GENERAL ASPECTS Where necessary, the working area must be isolated and secured against accidental re-connection before inspection, in accordance with the “Safety Regulations” specified by IEC standards and corresponding national standards. The switchgear condition must be monitored by regular inspections. Under normal operating conditions, inspections should be carried out once every fifth year by suitably trained personnel. INSTRUCTIONS Carry out the following inspections: − Visually ch eck for dirt , co rrosion and moisture. − Check for traces of discharges on insulating material parts. − If there are test points: − Visually ch eck the cont act points and surround ing earthed surfaces. − If there are signs of pollution or dust, please clean the area. − Check the operating pressure of the gas-insulated switching devices where possible. Follow gas-chapter for further instructions. − Check condition and life time of installed accessories and auxilliary devices; change if necessary according to component data sheet. − If corrosion is observed on mechanisms, motors or other accessories please contact ABB to evaluate if anything needs to be replaced. − Check that there are no visible signs of, or damage from, partial discharges. − There sh ould not be a ny v isib le s igns of overheat ed connections. − All comp onen ts shou ld perf orm perf ectl y and any f ault y components must be replaced.
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No discharge should occur on the surfaces of equipment at the operating voltage. This can, for example, be detected by characteristic noises, a clearly perceptible smell of ozone, or visible glowing in the dark.
NOTE Should partial discharges occur as a result of condensation, application of a t hin silicone film over the surface concerned is often effective as a temporary remedy. It is advisable to ask the ABB after-sales service department for advice regarding permanent solutions to this uncommon type of problem.
20.6 TOOL LIST SAFERING/SAFEPLUS NOTE The foll owin g li st of tools does NOT cover tools needed for HV or LV cable work/handling or testing. The tools mark ed w ith an “ X“ in t he c olum n “Required“ are needed for installation and regular maintenance work as described in chapter 20.
Tools
Requi red
Drill tools
REPAIR MEASURES If any irregular conditions are detected, appropriate servicing or repair measures must be taken.
14,4 Volt Drill with battery
LSV 034
Extra 14,4V battery Charger - DC18RA Drill heads Ø 1 -13 mm
20.4 SERVICING INSTRUCTIONS If the need for servicing measures is established during the course of an inspection, proceed as follows: 1. Clean all parts (e.g motors and mechanisms) with a vacuum cleaner and visually inspect them. Clean the surfaces in general: − Lightly settled dry dust deposits: clean with a soft dry cloth. 2. Perform a closing/opening operation on all disconnectors and circuit-breakers, fuse switches, and earthing switches. 3. Connect the auxiliary control voltage, but ensure that no remote signals can activate the components. Perform one electrical operation sequence on all motor-operated devices and tripping mechanisms. 4. For maintenance of gas-pressure, follow gas-chapter for further instructions. 5. Completely remove all rust from damaged paint work areas on steel sheet and other steel p arts by mechanical means, e.g. with a wire brush, and apply appropriate anti-corrosion treatment. 20.5 REPAIRS
Bits-set 59/S31 First Aid minikit M4 tap M5 tap M6 tap M16 tap Adap ter piece 7mm h ex t o 1/4“ Adap ter piece 7mm h ex t o 3/8“ Adap ter piece 7mm h ex t o 1/2“ 1/2“ Extender, L = 10“ ( 25 cm ) 1/2“ Long pipe - 17 mm 1/2“ Long pipe - 19 mm 1/2“ Long pipe - 22 mm Hand tools 1/2“ Long ratchet L = 42 cm 1/2“ Pipe set - Content: 1/2“ ratchet L = 24 cm 1/2“ extender, L = 1 3/4“ ( 4,5 cm ) 1/2“ extender, L = 2 1/2“ ( 6 cm ) 1/2“ extender, L = 6“ ( 15 cm )
X
1/2“ universal joint L = 7 cm 10 mm 1/2“ pipe
NOTE If the switchgear is damaged, contact ABB to evaluate necessary repairs. Some advanced repairs/ operations should be carried out only by ABB service personnel.
X
X
13 mm 1/2“ pipe
X
14 mm 1/2“ pipe
X
X
19 mm 1/2“ pipe
X
21 mm 1/2“ pipe
X
22 mm 1/2“ pipe
X
24 mm 1/2“ pipe
X
11 mm 1/2“ pipe 12 mm 1/2“ pipe
15 mm 1/2“ pipe 16 mm 1/2“ pipe
Carry out repair work immediately after a defect has been discovered. CAUTION Follow the maintenance instructions in the manuals for the relative components.
17 mm 1/2“ pipe 18 mm 1/2“ pipe
27 mm 1/2“ pipe 30 mm 1/2“ pipe 32 mm 1/2“ pipe
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Tools
Requi red
Extra tools
Adju stabl e wren ch 10 “
Head lamp - LED
Side cutting plier - ergo
X
Strippling plier
X
Flashlight LED
Multi-purpose service spray 5-56
Universal plier
Permanent Marker
Bits set with screwdriver handle
X
Small cable ties
3/8“ Long ratchet L = 50 cm
X
Large cable ties
L=203 x 2,5mm L=375 x 7,6mm
3/8“ Pipe set - Content:
Multimeter
3/8“ ratchet L = 24 cm
Insulation tape - Tesaflex 53948
3/8“ extender, L = 3“ ( 7,5 cm )
Working Gloves
3/8“ Bits holder
Specialist Cloth
8 mm 3/8“ pipe
- UT58B
Scotch-Brite
10 mm 3/8“ pipe
Silicon handling glove - Nitrile powder free
11 mm 3/8“ pipe
Hammer 12 oz
12 mm 3/8“ pipe
Clamp 300 x 100 mm
13 mm 3/8“ pipe
Bow saw nr. 10
14 mm 3/8“ pipe
Extra bow saw blades bi-metal 24T
15 mm 3/8“ pipe
Flat file
17 mm 3/8“ pipe
Round file
19 mm 3/8“ pipe
Knife
Bits PH 1
X
Bits PH 2
X
Bits PZ 2
X
Bits HEX 5
X
Bits TX 20
X
Bits TX 25
X
Bits TX 30
X
12““
300 mm
Bits FT 4 Bits FT 5,5 Bits PZ 1
Bits HEX 6 Bits TX 10 Bits TX 15
7 mm combination wrench
X
8 mm combination wrench 10 mm combination wrench
X
11 mm combination wrench 12 mm combination wrench 13 mm combination wrench
X
14 mm combination wrench
X
15 mm combination wrench 16 mm combination wrench 17 mm combination wrench 18 mm combination wrench 19 mm combination wrench Screwdriver - Flat 1,2 x 8 x150 Screwdriver - Flat 1,2 x 6,5 x100 Screwdriver - Flat 0,5 x 3 x75
X
Screwdriver - Flat 1,2 x 5,5 x38 Screwdriver - Star PZ 2 - 38 Screwdriver - Star PZ 2 - 75 Hex key set
1,5 - 10 mm
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21. ENVIRONMENTAL CERTIFICATION 21.1 LIFE EXPECTANCY OF PRODUCT The prod uct is developed in complian ce with the requirements denoted by IEC 62271-200. The design incorporates a life span under indoor service conditions exceeding 30 years (IEC 62271-200 annex GG). The swit chge ar is gas-tight with an expected diffusio n ra te o f
less than 0.1 % per annum. Referring to the reference-pressure of 1.4 bar, the switchgear will maintain gas-tightness and a gas-pressure better than 1.3 bar* throughout its designed life span. *) at 20 oC.
21.2 RECYCLING CAPABILITY Raw Material
Iron
We ig ht (k g)
% of tot al weight
Recycle
Environmental effects & recycle/reuse processes
132,80
42,53
Yes
Separate, utilise in favour of new source (ore)
Stainless steel
83,20
24,93
Yes
Separate, utilise in favour of new source (ore)
Copper
43,98
14,09
Yes
Separate, utilise in favour of new source (ore)
Brass
2,30
0,74
Yes
Separate, utilise in favour of new source (ore)
Alu mini um
8,55
2,74
Yes
Sepa rate , ut ili se i n fa vour of n ew s ource (ore)
Zinc
3,90
1,25
Yes
Separate, utilise in favour of new source (ore)
Silver
0,075
0,024
Yes
Electrolysis, utilise in favour of new source
Ther mopl asti c
5,07
1,63
Yes
Make gran ulat e, r e-us e or appl y as energ y s uper ior additive in refuse incineration
Epoxy incl. 60% quartz
26,75
8,35
Yes
Grind to powder and use as high-grade energy additive in cement mill
Rubber
1,35
0,42
Yes
High-grade energy additive in refuse incineration
Dielectric oil
0,21
0,066
Yes
Reclaim or use as high-grade energy additive in refuse incineration
SF 6 gas
3,24
1,04
Yes
ABB AS i n Ski en rec laims used SF 6 gas
311,42
97,81 No
*Stickers, film foils, powder coating, screws, nuts, grease....
Total recyclables Unspecified*
9,00
Total weight **
320
Packing foil
0,20
Yes
High-grade energy additive in refuse incineration
21,50
Yes
Re-u se or use a s ene rgy addit ive i n ref use i ncine ratio n
Wooden pallet
100
**) All gures are collected from CCF 3-way unit with fuse canisters
21.3 END-OF-LIFE ABB AS, Electrif icat ion Prod ucts divi sion , is co mmit ted to the protection of the environment and adhere to ISO 14001 standards. It is our obligation to facilitate end-of-life recycling for our products. There exis t no explicit requirements for how to hand le d iscarded switchgears at end-of-life. ABB’s recycling service is according to IEC 1634 edition 1995 section 6: «End of life of SF6 filled equipment» and in particular 6.5.2.a: «Low decomposition»: «No special action is required; non-recoverable parts can be disposed of normally according to local regulations.»
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We also recommend ABB’s website : http://www.abb.com/sf6 ABB AS, Electrification Products divisio n in Skie n is equi pped to reclaim SF 6 gas from discarded switchgears.
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