Electric Traction | State function of relay used in electric locomotive & also state its two types.

Function of Relay Used in Electric Locomotive: 

Relays sense abnormal conditions in the respective sections of the system and give the trip / alarm signal to the circuit breaker / indicator panel.

Types of Relay Used in Electric Locomotive:

1) Buchholz Relay

2) Earth fault or Ground fault Relay

3) Notching Relay 

4) No-volt Relay

5) Overload Relay 

6) Wheel-Spin Relay

7) Electromagnetic Relay

8) Current Limiting Relay