Product Details

  • Numerical Draw-out 3 Over Current & 1 Earth Fault

    Model No : PNA442-ND


    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.

    Specification

    • Three phase, high-set, non-directional Over current relay with instantaneous or definite time function
    • Low-set non -directional Earth fault Relay with inverse definite minimum time (IDMT) or definite time characteristics
    • High-set non-directional Earth Fault Relay with instantaneous time or definite time function
    • Password protection
    • RS-485 communication port with modbus protocol
    • Relay test facility with relay trip & without relay trip
    • Separate heavy duly output contacts provided f or time delayed phase fault with high-set and time delayed Earth Fault with high-set
    • Poly carbonate front cover with external reset switch
    • Consistent repeat accuracy
    • Unique combination o f 50/51/50N/51N in a single gadget

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