Master Relay/ Lock out relay - Basics and wiring 

Thanks you so much

Nice madam

Thanks.pls make detailed vedio on Numerical , Master and aux relay wiring ......

Excellent mam Thank u

super explanation medam

What are the use of Auxiliary contacts &limit switches in circuit breakers panel?. &how we provided different type of interloking in circuit breaker?

मास्टर रिले की coil मैं कब तक सप्लाई रहगी, कैसे reset होगी after breaker tripping

Interlocking of incomer to transformers

Convert to Hindi if possible