Backup Fuses

3 nos. of rewireable fuse units are mounted in the panel and are connected in series with each phase. They are used to protect the motors against short circuit.

The enclosure is fabricated using thick steel sheets and later powder coated to a glossy finish. Three pilot lamps are mounted at the top for phase indication. The Ammeter and Voltmeter used has <1% error & is of class 1 accuracy. The Ammeter reads the exact current drawn by the motor and the Voltmeter indicates the phase voltage as selected by the phase selector switch when the voltmeter button is pressed.

Star-Delta Control Panels:
precise Auxiliary contact blocks are used along with relays and contactors for the necessary switching of motors from Star to Delta connection.