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    Abnormal Voltage Controller

    Product Description


    Abnormal voltage controller which uses grounding transformer eliminates the problem of grounding fault protection system perfectly through it minimizes impact of Harmonics and surppress rising of electric potential by grounding transformer.

     It is possible to check ground currents by Ao Meter without checking insulation resistance directly and to carry out speedy action by cut-off power system by earth fault protection relay(OCGR) or by Alarm.


     There are lots of accident dangers such as malfunction of control equipments, element damage of equipment as well as risk of electric shock by rising of electric potential (voltage) at the time of ground fault due to insulation damage & contact of electric between grounds, but it can prevent such accidents in advance as supress abnormal voltage by adoption of this controller. In general, Ground fault protection system in unground system which is adoped currently is dectecting the sequence voltage by CRL of it limits ground falult current by protection relay. However, unbalance voltage is applied on GPT 4th winding due to Harmonics which is generated at the time of switching by increasing adoption of power convertion device like inverter recently. So, there are occuring lots of problem which reduces reliablility of ground fault protection system by malfunction of ground fault protection system due to sequence voltage & image current is deteced even though ground fault is not occurred actually.

    Product List


    Cyclo-converter Reactor
    Load Reactor
    AC Reactor for Output
    Starting Reactor
    Series Reactor
    AC Reactor for Input
    DC Reactor
    DISK Type Reactor
    Harmonic Reactor
    Air-Core Reactor
    Discharge Coil


    내뢰 변압기
    Electric furnace Transformer
    Scott Transformer
    Leakage Transformer - for recharge battery
    Inverter Transformer
    Rectifier Transformer
    Auto Transformer
    Shell type Transformer


    Dynamic Braking Resistor
    HXBR Series
    High Resistance Equipment Panel
    Neutral Grounding (Earthing) Resistor
    Starting Resistor - CAM Controller Type
    Starting Resistor - Magnetic Contactor Type
    Starting Resister - LIQUID Resister
    Crane Resistor
    Harmonic Filtering Resistor

    Load Bank

    R-L Load Bank


    Abnormal Voltage Controller