Scenario

ATS process

Issues noted

Incomer supply fail

Generator will start and the control supply change over from incomer to generator supply through contactor 1K1

This time the contactor of 1K1 gets chattering with variable/ fluctuating voltage while starting period of generator.

(i.e.. 0 V to rated voltage)

Incomer supply restored

Generator will stop and the control supply change over from generator to incomer supply through contactor 1K1.

This time the contactor of 1K1 and all control components used in circuit gets chattering with variable/ fluctuating voltage while shutdown period of generator.

(i.e.. rated voltage to 0 V)