Open transition starting may be objectionable in some applications if the transition causes spikes on the power line when ____.
A)adding another three pole contactor and resistors
B)the motor changes from wye to delta
C)voltage reducing equipment is connected
D)an on-delay timer has been added to the control circuit

Question

Quizplus · Accepted Answer

During open transition starting, when the motor changes from wye (star) to delta configuration, there can be a momentary power interruption. This interruption can cause voltage spikes on the power line, which may be objectionable in sensitive applications.

Open Transition Starting May Be Objectionable in Some Applications If