Protective current transformers to supply all kinds of protection relays
Current transformers for protection is used to power the relay protection. They provide the correct transformation of the current much higher than the rated in emergency overcurrent or short-circuit at which security should work correctly.
- IZK ...U cable type
- IZS ...U bus-bar type
- IZW ..U with primary winding terminals
The transformers are made in definite powers, in the protection classes 5P and 10P with the Accuracy Limit Factor ALF=5; 10; 15.
Caution! Other parameters available on request.
Current transformers are in compliance with standards and regulations:
- PN-EN 61869-1:2009
- PN-EN 61869-2:2013-06
Product specification
| Type/Technical data | Primary current | Rated power | Accuracy class |
| with primary winding | |||
|
IZW 1U |
5 ÷ 300 A | 1 ÷ 5 VA | 5P 15 ÷ 10P 15 |
|
IZW 2U |
5 ÷ 300 A | 3,5 ÷ 10 VA | 5P 10 ÷ 10P 15 |
| cable type | |||
|
IZK 1U |
75 ÷ 400 A | 1 ÷ 15 VA | 5P 5 ÷ 10P 15 |
|
IZK 2U |
50 ÷ 600 A | 1 ÷ 15 VA | |
|
IZK 3U |
50 ÷ 1000 A | 1 ÷ 15 VA | |
| bus-bar type | |||
|
IZS 1U |
150 ÷ 250 A | 1 ÷ 5 VA | 5P 5 ÷ 10P 15 |
|
IZS 2U |
100 ÷ 500 A | 1 ÷ 7,5 VA | |
|
IZS 3U |
400 ÷ 2000 A | 1,25 ÷ 15 VA | |
|
IZS 30U |
100 ÷ 1500 A | 1 ÷ 20 VA | |
|
IZS 31U |
100 ÷ 1500 A | 1 ÷ 25 VA | |
|
IZS 4U |
200 ÷ 1500 A | 1 ÷ 20 VA | |