which type of breaker sould be used for different level of
voltage ? (i.e at 11 Kv, 33 Kv, 66 Kv....
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Answer Posted / jyotirmaya patra
For 11KV Vaccum Circuit Breakers(VCB) are suitable to use.
Now-a-days SF6 (Sulphor Hexa Fluoride) breakers are
available but VCBs are economical than SF6 breakers.
For 33KV - both VCB & SF6 breakers can be used,but SF6
breakers are safer than VCBs. VCBs are more economical
For 66KV - SF6 breakers are the best to use
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