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Shenzhen Guodian Xuzhen Electric Technology Co., Ltd.

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TEL:400-698-3738
Shenzhen Guodian Xuzhen Electric Technology Co., Ltd. Address:
龙岗区龙城街道五联瓦窑东路26号安能泰工业园
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All products :
Line comprehensive protection measurement and control device
产品型号： GDB-771C

66KV, 35KV, 10KV, 6KV, 3KV and other voltage levels, do not need line protection with distance measurement and control, it is a complete and practical line comprehensive protection.

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Features
◆protection function

    Differential quick-break protection;
    Proportional differential protection;
    CT disconnection blocking proportional differential protection;
    Quick-break protection (Quick-break, quick-break direction);
    Time-limited quick-break (limited-time quick-break, limited-time quick-break direction);
    Overcurrent protection (overcurrent, overcurrent direction, inverse time);
    Recloser;
    overload;
    zero sequence overcurrent;
    low frequency load shedding;
    low voltage;
    PT disconnected;

◆Measurement and control function

    Bus voltage: Uab, Ubc, Uca; Ua, Ub, Uc;
    Measuring Current: Ia, Ib, Ic;
    Power: P, Q, cosФ;
    Frequency: f;

◆Accessibility

    MISS condition;
    Control loop disconnected;
    Manual opening and closing;
    Remote opening and closing;
    Troubleshooting;

◆Communication method

    1-2 channel 485 communication;
Note: For special requirements, it can be equipped with 1 Ethernet port, just add S after the original model.
technical parameter
Case show
  • Automatic power generation control system for hydropower station
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    Automatic power generation control system for hydropower station

  • Automatic power generation control system for hydropower station
    enlarge

    Automatic power generation control system for hydropower station

  • Automatic power generation control system for hydropower station
    enlarge

    Automatic power generation control system for hydropower station

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