CT secondary overheating

[mohammed gaber]

We have a 15 MVA, 33/6.6 KV transformer with internal Cts on 6.6 KV side (oil immersed CT). s*

.We found excessive overheating on CT's secondary connection on marshalling box *

CTs were originally not used and it's terminals were shorted but connection might have loose.

Transformer was taken out of service and CTs secondary terminal jumpers is verified again , and put transformer in service again.

سؤالي : هل في اي مشكله علي وضع المحول في الخدمه وازاي اطمن ان ال CTs مأثرتش علي الزيت او المحول من الداخل

[رباح فارس]

We have a 15 MVA, 33/6.6 KV transformer with internal Cts on 6.6 KV side (oil immersed CT). s*

.We found excessive overheating on CT's secondary connection on marshalling box *

CTs were originally not used and it's terminals were shorted but connection might have loose.

Transformer was taken out of service and CTs secondary terminal jumpers is verified again , and put transformer in service again.

سؤالي : هل في اي مشكله علي وضع المحول في الخدمه وازاي اطمن ان ال CTs مأثرتش علي الزيت او المحول من الداخل

لا توجد اي مشكلة في ذلك طالما ان محول التيار ملغي وملفه الثانوي شورت والمفروض تاريضه