Answer / ashish patil

Auxillary relay used to multiply the contact & used at
different function.eg. Buzzuloz relay have only ONE trip
contact By using this contact we operate Auxillary relay &
contacts of this relay used for tripping,indication,SCADA
etc

Answer / raju kumar singh

Auxiliary relay is a relay which will repeat the operations of protective relay such as tripping, time lag, breaking of trip circuit current, giving alarms and showing flags etc..
Protective relay contacts are delicate and light weight hence it will not capable of carrying a large amount of current for a long period.
protective relays do not have enough contacts to perform all the operations of protective scheme.

Therefore auxiliary relays, auxiliary switches and repeat contacts are used to assist protective relays.

Answer / shivprasad

An auxiliary relay is a relay that asists another relay or device in performing an action.it does this when its operating circuit is opened or closed.

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