Introduction
Sequence control circuit is a protection
circuit. It is used to determine the interruption in the power supply and to
detect the overloading of AC Motors. It consists of magnetic contactors, time
relays and Fuses.
Circuit
Diagrams
Working
Principle
When a Three-Phase power supply is
connected to a circuit then the magnetic contactors energize and connects their
terminals and connects the power supply to the AC Motor. If the power supply
interrupts, the time relays detect it and cut off the circuit from the ac motor
for a specific time.
Uses
This circuit is commonly used in every
industry for the protection purposes of AC Motors.
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