CT Class

[khadisa]

Hello,

We have an old CT that is of British Standard, of class 0 & T10 on one core and the other core T10. I want to know the equivalent class in IEC standard.
Also another CT is rated 2 x 4/1200, Siemens type of BS standard. What does this signify?

 

[a430]

Hi khadisa.

I have not heard of such class of Cts,and on the Seimens can you please send more details, is it a single core? or wnat is it like.

 

[patrick7]

you may want to contact Seimens directly.

 

[randyman]

Are you still searching for these ratings?? I checked my copy of BS-3938-1973 and there is no such class that resembles T10. In fact the BS is very much like IEC 60044-1. I checked some other country standards with no luck. The only other thing that comes to mind is IEEE C57.13 which use "T" for protection class for wound-type CTs. The other rating has me stumped entirely. Would like to know what you find out.