9
Appendix 1
Examples of secondary terminal marking for cast terminal box
- Current transformers according to IEC
s1 s2
s1 s2 s3
s1 s2 s3 s4
s1 s2 s3 s4 s5
s1 s2 s3 s4 s5 s6
1s1 1s2 2s1 2s2
1s1 1s2 2s1 2s2 PE
1s2 1s3 2s3 Ck
1s1 1s2 1s3 2s1 2s2 2s3
1s2 1s3 2s2 2s3
1s1 1s4 2s1 2s4
1s4 1s5 2s4 2s5
1s1 1s2 1s3 2s1 2s2 2s3
1s1 1s2 2s1 2s2 3s1 3s2
1s2 1s3 2s3 3s2 3s3
1s1 2s1 2s2 3s1
1s2 1s3 2s2 2s3 3s2 3s3
1s2 1s3 2s2 2s3 3s2 3s3 Ck
1s1 1s4 2s1 2s4 3s
1 3s4
1s1 1s4 2s1 2s4 3s1 3s4 PE
1s3 1s4 1s5 2s4 2s5 3s4 3s5
1s1 1s2 2s1 2s2 2s3 3s1 3s2 3s3
1s2 2s2 3s2 4s2
1s1 2s1 3s1 4s1
1s2 1s3 2s3 3s2 3s3 4s3
1s2 1s3 2s3 3s2 3s3 4s3 Ck
1s1 2s1 2s2 3s1 4s1 4s2
1s1 2s1 2s2 3s1 4s1 4s2 PE
1s2 1s3 2s2 2s3 3s2 3s3 4s2 4s3
1s1 1s4 2s1 2s4 3s1 3s4 4s1 4s4
1s2 2s2 3s2 4s2 5s2
1s1 2s1 3s1 4s1 5s1
1s2 1s3 2s3 3s2 3s3 4s3 5s2 5s3
1s1 2s1 2s2 3s1 4s1 4s2 5s1
1s2 2s2 3s2 4s2 5s2 6s2
1s1 2s1 3s1 4s1 5s1 6s1
2nd line of terminal
1st line of terminal
No tap
1 tap
No tap
2 tap
3 tap
No tap
1 tap
2 tap
6 cores
No tap
1 tap
2 tap
4 tap
3 tap
1 tap
2 tap
3 tap
No tap
No tap
1 tap
Three cores
4 cores
5 cores
Variants of connections
- double row terminal
- Special CT according
Ck
s1 s2 PE
Ck
s1 s2 s3 PE
Ck
s1 s2 s3 s4 PE
Ck
s1 s2 s3 s4 s5 PE
s6 Ck
s1 s2 s3 s4 s5 PE
Ck
1s1 1s2 2s1 2s2 PE
1s2 1s3 2s3 Ck
1s1 2s1 2s2 PE
1s2 1s3 2s2 2s3 Ck
1s1 1s4 2s1 2s4 PE
1s4 1s5 2s4 2s5
1s1 1s2 1s3 2s1 2s2 2s3
1s2 2s2 3s2 Ck
1s1 2s1 3s1 PE
1s2 1s3 2s3 3s2 3s3 Ck
1s1 2s1 2s2 3s1 PE
1s2 1s3 2s2 2s3 3s2 3s3 Ck
1s1 1s4 2s1 2s4 3s1 3s4 PE
1s3 1s4 1s5 2s4 2s5 3s4 3s5
1s1 1s2 2s1 2s2 2s3 3s1 3s2 3s3
1s2 2s2 3s2 4s2
1s2 2s2 3s2 4s2 Ck
1s1 2s1 3s1 4s1 PE
1s2 1s3 2s3 3s2 3s3 4s3 Ck
1s1 2s1 2s2 3s1 4s1 4s2 PE
1s2 1s3 2s2 2s3 3s2 3s3 4s2 4s3
1s1 1s4 2s1 2s4 3s1 3s4 4s1 4s4
1s2 2s2 3s2 4s2 5s2
1s1 2s1 3s1 4s1 5s1
1s2 1s3 2s3 3s2 3s3 4s3 5s2 5s3
Ck
1s1 2s1 2s2 3s1 4s1 4s2 5s1
PE
1s2 2s2 3s2 4s2 5s2 6s2
1s1 2s1 3s1 4s1 5s1 6s1
s1 s1 s2 s2
No tap
1 tap
No tap
2 tap
3 tap
No tap
1 tap
2 tap
Dummy
with CD
special
No tap
1 tap
2 tap
4 tap
3 tap
1 tap
2 tap
3 tap
No tap
No tap
1 tap
Three cores with CD
4 cores with CD
Variants of connections
- double row terminal
- Special CT according