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Protection and Control
    • Busbar current differential protection (87B)

    Phase current differential protection

    Percentage restraint DPFC differential protection

    • DPFC differential protection

    Voltage control element

    Detection of CT saturation

    Check zone and discrimination zone

    • Bus coupler/section protection

    Breaker failure protection (50BF)

    Dead zone protection (50DZ)

    Pole disagreement protection (62PD)

    Switch-onto-fault protection (50SOTF)

    Overcurrent protection (50/51)

    • Feeder protection

    Breaker failure protection (50BF)

    Dead zone protection (50DZ)

    Pole disagreement protection (62PD)

    Overcurrent protection (50/51)

    Voltage and current drift auto adjustment

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