Over/Under Voltage Protection | Low/High Voltage Protection Relay | What is Contactor in Hindi/Urdu

In This video I describe about Over/under Voltage Protection, Low/High Voltage Protection Relay, What is Contactor in Hindi/Urdu, How a Contactor Works, Know About Contactor, Working Principle and Construction, Magnetic Contactor Working Principle. Automatic Single Phase Voltage Protector (Adjustable Setting) Protection with Auto Re-Connect, Thanks for Watching.

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