STAR-DELTA starter
The star-delta starter is used for starting the three-phase motor. Star-delta method of starting the motor is used to limit the high inrush of starting current to the motor as it happens in the case of DOL starting method. The star-delta starter comes in two categories: FASD and SASD.
FASD
Fully Automatic Star-Delta
FASD starters are basic electrical starters with a contactor and relay combination for ON-OFF operation and overload protection of the pump/motors. The star to delta switchover takes place automatically with the help of a timer present in the panel.Over and above the ON/OFF operation and overload protection features equipped, it also provides additional features like Auto ON/OFF, indications of Supply ON/OFF and Pump ON/OFF, reading of real time voltage & current of pump with unique Dual analog meter.
Single phasing protection relay (SPPR) inside Controller unit provides the advanced protection features viz. single-phasing prevention, phase-reversal protection, phase-unbalance protection, variable time-delay adjustment for delayed operation of pump set.
