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Why is starter necessary for a three-phase induction motor?
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Answer Posted / eugine augustine
Starters are used in Squirrel Cage Induction Motors for the
following reasons:-
1. To provide several switching on and off operations by
means of the Contactor whose special contacts can withstand
high starting currents and switching off surges.
2. To provide lower starting currents at starting for
larger HP Motors, thereby preventing severe voltage drops in
the line which may affect other running equipments.
3. To provide protection against overload and single
phasing by means of the thermal magnetic Overload relay
provided in the Starter.
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