What is the winding resistsnce need to be in a 1000kva,
11kv/415v transformer, between ht winding to lt winding, ht
winding to earth, lt winding to earth.?
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Answer Posted / k.prakashchandra
You mean insulation resistance ?As a rough guide,the megger
value should be at least 2 M ohm per KV rating at 60'C for
11 KV and above.The megger value doubles itself for every
10'C fall in temp.
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