11kv/0.433kv, 2 mva , transformer , for protection and
metering how many CT/PT are required?
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Answer Posted / vikas chauhan
3 no CT (Double core) for 11 kv side for protection and
metering
3 no CT (Double core) for 0.433 kv side for protection and
metering
11/.110 KV 3 phase PT for 11 KV side
secondry side(.433KV side) phase directly connected for
Metering & select relays for .433 KV secondry voltage.
if you select differencial rotection
3 nos CT for Primary and 3 No CT for Secondry side and
interposing CT for Match and neutralise the current in
relay.
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