Answer / salil

Seperate Starter is not required as the VVVF Panel will
take care of starting the motor with its soft start feature.
ofcourse, in some applications, seperate starter is used to
provide the bypass system.since in case of vvvf panel
failure the motor can be operated through the starter.

Answer / amol

In the V/F control technique the voltage to frequency ratio
is maintained constant. Torque is maintained constant at
rated frequencies and rated speeds .
Seperate Starter is not required as the VVVF Panel will
take care of starting the motor with its soft start feature.
ofcourse, in some applications, seperate starter is used to
provide the bypass system.since in case of vvvf panel
failure the motor can be operated through the starter

Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to sreenu_207@yahoo.co.in

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