BEEME 2 Protection devices

UNIT – 3

Utilization of Electrical Power

  

Need for earthing

Earthing is used to protect you from an electric shock. It does this by providing a path (a protective conductor) for a fault current to flow to earth. It also causes the protective device (either a circuit-breaker or fuse) to switch off the electric current to the circuit that has the fault.

What is circuit breaker?

Electrical circuit breaker is a switching device which can be operated automatically or manually for protecting and controlling electrical power systems.

Applications of Circuit breakers:

The circuit breaker is a switching device which also offers protection by tripping & cutting off the supply to load in case of fault. Primarily the circuit breakers are used for switching of different kinds of load in Industries, Buildings, Commercial Complexes, and Hotels, etc.