Problem Observed in New 6-KV CT During Testing

Dear friend,

As you know the CTs are basiclly to insulate the instruments from high vltage side.

All the CTs should have the similar resistance value. If any of the CT resistance value is differig from the other two , it should be replaced.

CVS murthy

Manager Projects

GMMCO Limited

Hi Mr. Hiren

First try to get all test results & certificate from OEM(Original Equipment Manufacturer) & compare the values of these results with that report.

For more comment I will get back to you soon.

thanks

SJ

Hi

Only voltage stress is able to damage the CT in this way considering your Test result,It could not be damaged during Transportation.Either Thery may be chances that it might got damaged during its Routine Test at OEM site or There may be error in your Test method or Testing Equipment.

But now you cant use these CTs without ensuring its healthyness.

Pl let me update final result,I would also like to know.

thanks

SJ

I read all your test result. actually all test you have done is very conventional method.

if you can test the CT by using CPC-100 by omicron or like that type of test kit then it I can define the problem.

moreover my suggestion is like that test the ct by cpc-100 and

check the metering it is shorted (may be)

you should test the saturation point of CT (send result to me)

s_ha02@yahoo.com

shakhawat

PGCB, bangladesh