Current transformers - low voltage measuring... - split core transformers

Split-core current transformers

Split core current transformers was designed for easy installation on bus-bar or cable conductor without disconnecting the current circuit.

1. Split-core current tranasformers ISN 3R type

Technical data:

Rated primary current	Rated power	Accuracy class	Rated secondary current	Max. dimensions
A	VA	-	A	mm
100	1 ÷ 7.5	3	5 or 1	60 x 10 or Æ30
150	1 ÷ 2	1 3
150	2.5 ÷ 7.5	3
200	1 ÷ 5	1 3
200	7.5	3
250	1 ÷ 2.5	0.5 1 3
	3,75 ÷ 7.5	1 3
	10	3
300	1 ÷ 5	0.5 1 3
	7.5	1 3
	10	3
400	1 ÷ 5	0.5 1 3
	7.5	1 3
	10	3
500	1 ÷ 5	0.5 1 3
	7.5 ÷ 10	1 3
	15	3
600	1 ÷ 5	0.5 1 3
	7.5 ÷ 15	1 3
	20	3
750	1 ÷ 15	0.5 1 3
	20	1 3
	25	3
800	1 ÷ 15	0.5 1 3
800	20 ÷ 25	1 3

Example of ordrer:
Split-core current transformer ISN 3R 200/5 A; 5 VA; kl. 1
ISN 3R - pdf version

2. Split-core current tranasformers ISN 4SR type

Technical data:

Rated primary current	Rated power	Accuracy class	Rated secondary current	Max size of a bus-bar
A	VA	-	A	mm
600	2,5 ÷ 15	0,5 1 3	5 or 1	80 x 30
	20	1 3
	30	3
750	2,5 ÷ 20	0,5 1 3
750	30	1 3
800	2,5 ÷ 20	0,5 1 3
800	30	1 3
1000	2,5 ÷ 5	0,2 0,5 1 3
	10 ÷ 30	0,5 1 3
	40	1 3
1200	2,5 ÷ 5	0,2 0,5 1 3
1200	10 ÷ 40	0,5 1 3
1250	2,5 ÷ 5	0,2 0,5 1 3
1250	10 ÷ 40	0,5 1 3
1500	2,5 ÷ 10	0,2 0,5 1 3
1500	15 ÷ 40	0,5 1 3
1600	2,5 ÷ 10	0,2 0,5 1 3
1600	15 ÷ 40	0,5 1 3
2000	2,5 ÷ 15	0,2 0,5 1 3
2000	20 ÷ 40	0,5 1 3

Example of order:
Split-core current transformer ISN 4SR type: 1000 A/5 A; bus-bar size 80 x 30 mm; accuracy class 0,5; rated power 5 VA
ISN 4SR - pdf version

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