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5

Text example 

Remark 

Project 
number 

2410005671 

1 x / Phase on the 

first outlet wire only 

(1S1) 2410005671, 
100, 10, T1, 
1VLT5715001663 

Position 

100 

Bay 

B10 

Transformer 
designation 

T1 

Serial number 

1VLT5715001663 

Pin 
designation 

X1 

each outlet wire 

X1R., 1S1

Phase 
designation 

Standard 
designation 

1S1 

The parameter about the project number / posi-
tion / bay and transformer designation according 
to order documents. The parameter about the pin 
designation / phase of designation and standard 
designation according to switching documents 
(wiring diagram).

4. Instructions for use

Current instrument transformers are used: 

•  to convert currents in the primary circuit to an 

appropriate level for secondary circuit equip-
ment (relays and meters) 

•  to insulate primary and secondary circuit from 

each other to protect the secondary equipment 
from the harmful effects of current appearing 
during the operation (short circuits) 

The use of current transformer for purpose other 
than described above is forbidden if not agreed 
with the producer. 

Routine test report 

The routine test report of a current instrument 
transformer includes:  
a) veritication of terminal markings  
b) inter-turn overvoltage test  
c) determination of errors  
d) power-frequency test 

Upon the customer’s request the following infor-
mations can be provided free of charge: 

•  theoretical current/voltage error and phase dis-

placement values 

•  theoretical excitation (magnetization) curves 

Additional reports for supplementary charge, 
made available on request: 

•  test report on accuracy 
•  excitation (magnetization) curves 
•  additional nameplates (if more than 1 is re-

quired) 

•  verification tests for measuring cores (classes 

0.2; 0.2S; 0.5; 0.5S) 

5. Maintenance instructions 
before installation 

The current transformers are delivered packed in 
foil unit, protected from dust and ambient humid-
ity. The foil unit keeps transformer clean for in-
stallation into SF6 compartment. Any dust sedi-
ments or any other type of contamination has to 
be removed from the transformer using a soft 
brush and alcohol, in a way not to damage the in-
sulation or cables taken out from the transformer. 
Protect surface inside of tube during manipula-
tion with a transformer. Surface inside of tube of 
flange must be smooth without sharp edges and 
coarse defects. 

6. Transport & Storage 

The permitted temperature for transport and 
storage ranges from -30°C to +60°C. During 
transport and storage the transformers have to 
be protected from direct impact of solar radia-
tion. The transformers are delivered fixed on 
transport palletsin wooden crates. 

7. Disposal 

Materials used in instrument transformers are 
considered as materials without environmental 
impact and the materials are not toxic. Instru-
ment transformers have to be disposed in accor-
dance with national legislation relevant to do-
mestic waste disposal. 

Summary of Contents for ELK-CT0 145 F

Page 1: ... PRODUCT FOR HIGH VOLTAGE APPLICATION Current transformers ELK CT0 Instructions for installation use and maintenance ...

Page 2: ... Safety instructions 3 Mounting 3 Connection of transformer primary side 3 Connection of transformer secondary side 7 4 Instructions for use 7 Routine test report 7 5 Maintenance instructions before installation 7 6 Transport Storage 8 7 Disposal 8 8 Handling 9 9 Normative references 9 10 Dimensions 9 11 Lifetime 12 Repair 10 Appendix 1 Examples of electrical wiring 11 Appendix 2 Dimensional drawi...

Page 3: ...insulation levels 8 rated short time thermal current duration 9 additional standard 10 rated continuous thermal current 11 rated dynamic current 12 ratio 13 parameters of 1st core terminal mark ing transformer ratio rated output bur den accuracy class extension 01 Example of current transformer rating plate Instructions for installation use and maintenance for current instrument transformers These...

Page 4: ...T0 are designed for mounting in gas insulated switchgears type ELK 04 De pending on the protection concept they can be arranged in front or behind of the circuit break er s interrupting unit The primary sided insula tion is provided by SF6 gas Up to a rated nominal current of 3 150 A current transformers are usu ally integrated into the flanges of the circuit breaker enclosure Note in case of a ra...

Page 5: ...e of charge theoretical current voltage error and phase dis placement values theoretical excitation magnetization curves Additional reports for supplementary charge made available on request test report on accuracy excitation magnetization curves additional nameplates if more than 1 is re quired verification tests for measuring cores classes 0 2 0 2S 0 5 0 5S 5 Maintenance instructions before inst...

Page 6: ...ral principles of design EN 50110 1 Operation of electrical installa tions Current instrument transformers are designed tested and manufactured in accordance with in ternational or national standards the customer s requirements based on an agreement between the customer and the manufacturer The specific standard is always mentioned on the transformer ratio nameplate As an example the following sta...

Page 7: ...7 Appendix 1 Examples of electrical wiring Current instrument transformers ...

Page 8: ...ALL ATION USE AND MAINTENANCE Appendix 2 Dimensional drawings Weight of the transformer depends on the number of cores and their parameters ELK CT0 145 LG ELK CT0 145 F Drawing No 2RKA016357 Drawing No 2RKA016354A0001 VERSION A0001 A0002 L max mm 349 449 ...

Page 9: ...CT0 170 L ELK CT0 735FG Drawing No 2RKA016361 Drawing No 2RKA016368 VERSION A0001 A0002 A0003 A0004 L max mm 343 353 443 493 Up to 60 outlets A 750mm for more than 60 outlets A 850mm only for A0003 and A0004 ...

Page 10: ...10 CURRENT TR ANSFORMERS ELK CT0 INSTRUCTIONS FOR INSTALL ATION USE AND MAINTENANCE ELK CT0 170 F 735 F Drawing No 2RKA014943A0006 ...

Page 11: ...11 ELK CT0 520 LK ELK CT0 520 LG Drawing No 2RKA014879A0001 Drawing No 2RKA014872 VERSION A0002 A0004 L max mm 344 445 ...

Page 12: ...ORMERS ELK CT0 INSTRUCTIONS FOR INSTALL ATION USE AND MAINTENANCE ELK CT0 735 L ELK CT0 520 F Drawing No 2RKA014876 Drawing No 2RKA014881A0003 VERSION A0001 A0002 A0003 A0004 A0008 A0009 L max mm 193 493 353 343 443 153 ...

Page 13: ...le lack of information in this document We reserve all rights in this document and in the subject matter and illustrations con tained therein Any reproduction disclosure to third parties or utilization of its contents in whole or in parts is forbidden without prior written consent of ABB Copyright 2019 ABB All rights reserved C O N TA C T U S ABB s r o EPDS Brno Videnska 117 619 00 Brno Czech Repu...

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