DC Earth Fault Relays N96D-EFR/d

The N96D-EFR/d senses total current passing from the DC system on Positive or Negative BUS & calculate leakage current passing through earth. The relay operates either during Over Load or when the leakage current goes above the selected value . It has Over Current Range from 20-120% & Earth Fault level setting from 1% to 10% of rated current sensor, for e.g. for 25A Sensor it shall be 5A to 30A for Over Load & 250mA to 2.5A for Earth Fault. It also has time delay setting from 1 to 10 sec for delay in relay operation after fault occurs. The relay has 1 C/O set of contacts each for +ve Earth Fault, Negative Earth Fault & DC Over Load.