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Answer Posted / nagesh
Relay is switch which can be operated by rated power supply
at the rated current...Relay consists of NO and NC contact
which operates depending on the Coil
Ex ---NO contact will become Close when relay is activated
------NC contact will open when relay is energised
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Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV
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