The use of 25KV rated equipment on a 26.4KV primary?
The use of 25KV rated equipment on a 26.4KV primary?
(OP)
I have a pad mounted transformer rated: 750KVA,3 PHASE, Y-Y, 15.24/26.4KV - 277/480V. The rep. is telling me that i can use a class rating of 25KV,125KV BIL instead of 35,150KV BIL for insulation, but i am still not 100% convinced it is 26.4kv on the primary how can i get away with 25kv rated equipment?
any inputs are appreciated, thank you
any inputs are appreciated, thank you






RE: The use of 25KV rated equipment on a 26.4KV primary?
RE: The use of 25KV rated equipment on a 26.4KV primary?
RE: The use of 25KV rated equipment on a 26.4KV primary?
RE: The use of 25KV rated equipment on a 26.4KV primary?
RE: The use of 25KV rated equipment on a 26.4KV primary?
26.5kV- 150kV are system maximum voltage and BIL voltage of another standard;
system voltage is phase-to-phase; metering tests are normally phase-to-ground.
RE: The use of 25KV rated equipment on a 26.4KV primary?
the next standard rating for the (bushing,load break connectors, surge arrestors) is 35KV
RE: The use of 25KV rated equipment on a 26.4KV primary?
If you require 200 kV BIL, then that would be 36 kV class equipment.
RE: The use of 25KV rated equipment on a 26.4KV primary?
You have to use 25 kV class bushings, arrestors, etc...for 150kV BIL grounded system ( i guess your 25.6kV is effectively grounded system).
RE: The use of 25KV rated equipment on a 26.4KV primary?
RE: The use of 25KV rated equipment on a 26.4KV primary?
I would assumme 25 kV-150kV class bushings, arrestors, etc...
RE: The use of 25KV rated equipment on a 26.4KV primary?
RE: The use of 25KV rated equipment on a 26.4KV primary?
RE: The use of 25KV rated equipment on a 26.4KV primary?