what is difference between start imitation and start
interlock for 3 phase motor protection ?

Answer Posted / maheshreddy

Start Limitation: It is the limitation from the Motor
Design side. There is a limitraion for motor from No.of
Consecutive hot Stat and Consecutive Cold Stat according to
motor themal withstandabulity.

Start Inerlock: It is permissiveness given to start the
motor from its protection or proceess interlocks.Example
motor cooling blowers should be on before motor starts.

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