Description
Product details
Protime's Digital Earth Fault relay monitors the current flowing through the circuit continuously through secondary of CT / CBCT which is in the current path. When current signal goes out of the range selected , the relay status will change .The relay checks CT/CBCT for its healthiness first & then starts monitoring fault current. The relays are provided with time delays . The C. T./CBCT is connected in earth fault current path. For e. g. Cable connected between Alternator neutral &ground, or Neutral of the circuit, or if CBCT is used it is connected to pass all 3/4 wires to pass through it to measure fault current. Digital EFR has a facility for user to program AUTO/MANUAL RESET and NORMAL/FAIL SAFE TRIPPING of relays. Also it has connectivity of RS232/485 as an additional option. For more technical data please refer BROCHURE section (DS N96D-EFR)
