Post type current transformers

   IWB SERIES

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Indoor

3.6-7.2-12-17.5-24 KV

Primary current from 50 to 4000 A

Cast-resin insulated

 

 

 

 

 

 

Current transformers vacuum moulded in self-extinguishing epoxy resin for the measurement of AC currents up to 4000A.

 

 

 

 

Technical data

Rated insulation level

 

3.6/20/60kV   to  24/70/170 kV

 

primary current Ipn

 

50 to 4000A

 

 

Secondary current Isn

 

5 or 1 A

 

 

 

Frequency

 

 

50 or 60 Hz

 

 

Rated output

 

1 to 100 VA

 

 

Accuracy class

 

0.2 - 0.2S -0.5-0.5S-1-3-5P-10P-ClX

Security factor

 

5 to 20

Accuracy limit factor

5-10-15-20-30

 

 

 

Short-time thermal current Ith

80 to 1000 Ipn

 

Dynamic current Idyn

 

2.5 Ith

 

 

 

Insulation class

 

E

 

 

 

Continues thermal current

 

1.2 to 1.5Ipn and 2Ipn

 

 

Altitude

 

1000 m

 

 

Ambient temperature

 

-5C° to + 40 C°

-25C° to + 40 C°

-40C° to + 40 C°

 

 

Standards

 

 

 

IEC60044-1, IEC61869-2,IEC60044-6

 



 

 

Other characteristics on request

Secondary current Isn

 

 

0.005 to 10 A

 

 

Multi ratio

 

 

By secondary tapping

 

 

Multiple cores

 

Up to 5 separate cores

 

 

Continuous thermal current

 

 

1.2 to 1.5Ipn and 2Ipn

 

 

Ambient temperature

 

Up to + 110C°

 

 

Standard

 

 

ANSI C57.13, CAN13- AS1675



 

 
 

*This document is the property of Pars Shar and maybe changed without prior notice*