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Intelligent low-voltage composite switch FK

产品编号：

1133004336335048704

所属分类：

Reactive compensation series

  • Product description
  • Product features
  • Technical specifications
  • Product size

  • QYFK series intelligent low-voltage composite switch is an intelligent environment-friendly low-voltage capacitor switching switch, which combines the advantages of silicon controlled rectifier and AC contactor. The working principle is to connect the thyristor and relay in parallel, so that the composite switch has the advantages of zero crossing thyristor switching at the moment of switching, and has the advantage of no power consumption of AC contactor during normal connection, making up for the shortcomings of SCR and AC contactor in low-voltage reactive power compensation application. The main advantages of this product are: after receiving the external control signal, through intelligent judgment, it can automatically find the best switching point to ensure zero crossing switching, small inrush current, no sintering due to electric shock, low power consumption, and voltage anomaly protection. Compared with similar products, its inrush current switching and safety reliability are greatly improved.

  • Product characteristics

    1. Voltage: 380V/220V (± 20%), three-phase four wire AC (50Hz ± 5%)
    2. Control voltage: DC: 4-32V
    3. Inrush current: less than 2 times of rated current
    4. Control capacity: total compensation three-phase capacity ≤ 40kvar, sub compensation each phase capacity ≤ 13.3kvar
    5. Switching mode: zero crossing switching+relay mechanical switching
    6. Intelligent mechanism: intelligent monitoring, voltage fault phase failure protection, power voltage phase failure protection, self diagnosis fault protection, power failure protection
    7. Low power consumption: ≤ 1.5VA, service life: 100000 times
    8. Impedance: input impedance ≥ 6.8K Ω, conduction impedance ≤ 0.003 Ω
    9. Response time: ≤ 1000ms
    10. Interval between each switching on and off: ≥ 6 seconds, interval between two consecutive switching on: ≥ 120 seconds
    11. Insulation grade: ≥ 10M Ω under normal atmospheric conditions

     

    environmental conditions

    1. Operating environment: - 25~55 ℃; Relative humidity:<90% at 40 ℃; Altitude: ≤ 2000m
    2. Installation site: the surrounding medium has no explosion hazard, no gas sufficient to damage insulation and corrode metal, no conductive dust, and the installation site is not prone to severe vibration and no rain and snow erosion.

     

    Product Identification Code

    QY

    —

    		 FK

    —

    		 D

    —

    		 450

    —

    		 30
           
    Brand code   Low voltage intelligence
    Composite switch    		   Capacitive connection D triangle
    Y star    		   working voltage 
    （V）    		   Matching capacitor capacity
    （Kvar）

     

QYFK series intelligent low-voltage composite switch is an intelligent environment-friendly low-voltage capacitor switching switch, which combines the advantages of silicon controlled rectifier and AC contactor. The working principle is to connect the thyristor and relay in parallel, so that the composite switch has the advantages of zero crossing thyristor switching at the moment of switching, and has the advantage of no power consumption of AC contactor during normal connection, making up for the shortcomings of SCR and AC contactor in low-voltage reactive power compensation application. The main advantages of this product are: after receiving the external control signal, through intelligent judgment, it can automatically find the best switching point to ensure zero crossing switching, small inrush current, no sintering due to electric shock, low power consumption, and voltage anomaly protection. Compared with similar products, its inrush current switching and safety reliability are greatly improved.

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