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PD levels in cast-resin dry type transformers
2

PD levels in cast-resin dry type transformers

PD levels in cast-resin dry type transformers

(OP)
Is there any reference / standard for allowable partial discharges (in pico coulombs) for cast-resin dry type transformers ? I am looking for PD values for 11 KV/433 V, 500 KVA Trafos.

Thanks in advance.

*Why a man thinks he outrun a chasing dog when it has twice as many legs?*

RE: PD levels in cast-resin dry type transformers

2
Depends on where you're coming from, but in IEC 60076-11:2004, the level is 10pC at 1.3Urated.

RE: PD levels in cast-resin dry type transformers

(OP)
Thanks ausphil. IEC is fine.

When you say 1.3 U rated, shall I take it as the line-to-line voltage and not phase voltage ?

Any temperature limit while measuring the pd ?

*Why a man thinks he outrun a chasing dog when it has twice as many legs?*

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