The IDMT/DEFINITE TIME/INSTANTANEOUS LOW-SET/HIGH-SET NON-DIRECTIONAL
NUMERICAL/MICROPROCESSOR BASED OVER CURRENT RELAY (OCR) WITH EARTH FAULT RELAY
(EFR) of KP Series PNA TYPE is extensively used for selective short circuit and earth fault
protection of radial feeders in solidly earthed, resistance earthed or impedance earthed
power systems. It has wide applications in substations & industrial networks.
The IDMT/DEFINITE TIME/INSTANTANEOUS LOW-SET/HIGH-SET NON-DIRECTIONAL
NUMERICAL/MICROPROCESSOR BASED OVER CURRENT RELAY (OCR) WITH EARTH FAULT RELAY
(EFR) of PNA TYPE can also be used in most application where inverse time, definite time
and instantaneous relays are required. The relay gives selective phase and earth fault
protection in time graded systems for transformers, motor etc. If ensures reliable protective
system and clears only the faulted section.