33KV HT RELAY

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HT RELAYS :
The below Relay are Combination of Two over current(O/C) One Earth fault (E/F) relays in a Single unit .
ELECTROMAGNETIC INDUCTION DISC TYPE RELAY
Types of HT relays :   1. OVER CURRENT RELAY
2. SHORT CIRCUIT RELAY
                                       3.  EARTH FAULT RELAY


  •  OVERCURRENT RELAY :  It is induction Disc type Electromagnetic Relay with IDMT characteristics .


  • Different characteristics of O/C RELAY are :


  1. Instantaneous
  2. Definite time
  3. IDMT
  4. Very inverse
  5. Extreme inverse
  • Overcurrent relay (inverse ) type set at  0.75 Amps
  • Relay  tripping time set at  0.1 sec.
  • Earth fault Relay set at  2.0 AMPS
  • Relay  tripping time set at  0.1 sec.





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