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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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Microcomputer intelligent excitation controller
产品型号： GD985G

It is suitable for single unit operation of high-pressure hydro generator and diesel generator or parallel and grid connected operation of multiple units. Excitation transformer (brush motor) suitable for any wiring mode.
After debugging, there is no need for manual adjustment from St...

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Features
◆ there are three excitation modes for operation under load: constant power factor, constant voltage and constant excitation.
◆ with the given characteristics of no-load V / F, it can stand by at low speed for a long time to ensure that the excitation current will not be large.
◆ constant voltage mode can set the magnitude of reactive power differential adjustment to ensure stable and balanced reactive power distribution for parallel operation of multiple units.
◆ grid connected constant power factor operation function, so that there is no need to manually adjust the excitation whether the load is increased or decreased.
◆ the detection current has the same name and the terminal is connected with the reverse alarm function.
◆ automatic voltage stabilizing function of load rejection. When tripping with load, there is no need to manually adjust the excitation.
◆ no load automatic tracking of grid voltage function can ensure the stable input of grid connection.
◆ no load overvoltage or over frequency automatic de excitation, and the value can be set.
◆ no load low-frequency (adjustable) de excitation function, and there is no need to manually turn off the excitation during shutdown.
◆ strong excitation, over excitation and under excitation limit function, and the size can be set.
◆ equipped with standard Modbus communication protocol interface to realize computer control.

technical parameter
◆ scope of application: all kinds of medium and small generators.
◆ input signal:
◆ measured voltage: generator voltage AC - 00v (high voltage generator can be customized ac0-150v).
Grid voltage ac0-600v (ac0-150v can be customized for high-voltage generator) (single machine operation without grounding).
◆ differential current: connect the secondary side of the current transformer of nominal ac5a (current in different phase with the measured voltage of generator).
◆ excitation power supply (brushless): rated ac200-240v. (those beyond the scope need to be customized).
◆ synchronous voltage (with brush): rated ac80-200v. (those beyond the scope need to be customized).
◆ working power supply: DC16 ~ 30V.
◆ grid connection signal (closing feedback): use the main switch closing signal (normally open or normally closed, can be set).
◆ rated output voltage of brushless excitation: 20 ~ 160V; The continuous current shall not exceed 10a, and the maximum excitation current shall not exceed 20A. (those beyond the scope need to be customized).
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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