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AFK series reactive power compensation switch device
source:管理员 time:2018-10-19

  Composite switch

  1.1 Product Overview

  The low-voltage composite switch is a capacitor switching device in the new-generation low-voltage reactive power compensation device. The basic working principle is: the thyristor and the magnetic holding relay are connected in parallel, controlled by the internal single-chip microcomputer, and the thyristor bears the zero-crossing at the moment of input and cut-off. The switching is performed, and then the magnetic holding relay is turned on. Therefore, the composite switch has the advantages of zero-crossing switching and no inrush current, and the advantages of the AC contactor running without power consumption, which can avoid the disadvantages of the thyristor running heat and the spark when the contactor is cut.

  1.2 Implementation standards

  GB/T 14048.4-2010 Low-voltage composite switch and thyristor dynamic switching switch implementation standard

  1.3 Model Description




  Note: The B-type composite switch and the A-type composite switch are only different in size. The maximum rated current of the B-type size is 70A. The other electrical properties are the same. The selection must be marked with the size. If not, the default A-size is not specified.

  1.4 Main indicators

  1.4.1 Environmental conditions

  Altitude: ≤2000m

  Ambient temperature: -25 to 55 ° C

  Relative humidity: 40 ° C, 20 ~ 90%

  Atmospheric pressure: 79.5~106.0Kpa

  There is no conductive dust and corrosive gas in the surrounding environment, no flammable and explosive medium.

  1.4.2 rated voltage

  Three-phase type: AC380V±20%, 50Hz±10%

  Split phase type: AC220V±20%, 50Hz±10%

  Current specification: 45A, 55A, 70A, 80A

  Working power: AC220V±20%, 50Hz±10%

  Power supply voltage harmonic distortion rate: ≤ 5%

  Control voltage: DC 5V-12V/10mA control signal that can control the output

  Power consumption of this machine: ≤3VA

  Dynamic response time: After the input or the cut signal is controlled, the input or cut action is completed within 1 s.

  Repeated cutting time: after the previous cutting is completed, after 2s delay, the input action can be performed again.

  Magnetic retention relay mechanical life: 106 times

  1.5 use case

  1.5.1 Three-phase common compensation wiring diagram (with power factor automatic compensation controller)


  1.5.2 Three-phase hybrid wiring diagram (with power factor automatic compensation controller)



  2. Synchronous switch

  2.1 Product Overview

  The low-voltage synchronous switch is a capacitor switching device in the new-generation low-voltage reactive power compensation device. The basic working principle is: the thyristor and the magnetic holding relay are connected in parallel, controlled by the internal single-chip microcomputer, and the thyristor bears the zero-crossing at the moment of input and cut-off. The switching is performed, and then the magnetic holding relay is turned on. Therefore, the synchronous switch has the advantages of zero-crossing switching and no inrush current, and has the advantages of no power consumption of the AC contactor operation, and can avoid the disadvantage that the thyristor runs with heat and sparks when the contactor is cut off.

  2.2 Implementation standards

  GB/T 14048.4-2010 Low-voltage composite switch and thyristor dynamic switching switch implementation standard

  2.3 Model Description





  Note: The B-type synchronous switch and the A-type synchronous switch are only different in size. The maximum rated current of the B-type size is 70A. The other electrical properties are the same. The selection needs to be marked with the size. If not, the default A-size is not indicated.

  2.4 Main indicators

  2.4.1 Environmental conditions

  Altitude: ≤2000m

  Ambient temperature: -25 to 55 ° C

  Relative humidity: 40 ° C, 20 ~ 90%

  Atmospheric pressure: 79.5~106.0Kpa

  There is no conductive dust and corrosive gas in the surrounding environment, and there is no flammable and explosive medium.

  2.4.2 Rated voltage

  Three-phase type: AC380V±20%, 50Hz±10%

  Split phase type: AC220V±20%, 50Hz±10%

  Current specification: 45A, 55A, 70A, 80A

  Working power: AC220V±20%, 50Hz±10%

  Power supply voltage harmonic distortion rate: ≤ 5%

  Control voltage: DC 5V-12V/10mA control signal that can control the output

  Power consumption of this machine: ≤3VA

  Dynamic response time: After the input or the cut signal is controlled, the input or cut action is completed within 1 s.

  Repeated cutting time: after the previous cutting is completed, after 2s delay, the input action can be performed again.

  Magnetic retention relay mechanical life: 106 times

  3. Thyristor dynamic switching switch

  3.1 Product Overview

  AFK thyristor switching switch is an electronic switch with no mechanical contacts. It can track the change of load reactive current. It adopts zero-crossing switching. There is no over-voltage and arc in the switching process. The response time block can be frequently switched without noise. long time. It also has the functions of phase loss protection, automatic identification phase sequence, over temperature protection alarm output, etc. The number of switching times can reach one million.

  3.2 Implementation standards

  GB/T 14048.4-2010 Low-voltage composite switch and thyristor dynamic switching switch implementation standard

  3.3 Model Description





  3.4 Main indicators

  3.4.1 Environmental conditions

  Altitude: ≤2000m

  Ambient temperature: -25 to 55 ° C

  Relative humidity: 40 ° C, 20 ~ 90%

  Atmospheric pressure: 79.5~106.0Kpa

  There is no conductive dust and corrosive gas in the surrounding environment, no flammable and explosive medium.

  3.4.2 Rated voltage

  Three-phase type: AC380V±20%, 50Hz±10%

  Split phase type: AC280V±20%, 50Hz±10%

  Current specification: 45A, 55A, 70A, 80A

  Working power supply: AC280V±20%, 50Hz±10%

  Power supply voltage harmonic distortion rate: ≤ 5%

  Control voltage: DC 5V-12V, 10mA/channel control signal that can control the output

  Power consumption of this machine: ≤3VA

  Dynamic response time: After the input or the cut signal is controlled, the input or cut action is completed within 1 s.

  Repeated cutting time: after the previous cutting is completed, after 2s delay, the input action can be performed again.

  Magnetic retention relay mechanical life: 106 times

  3.5 Installation dimensions and wiring methods


  3.6 Typical Application Schematic

  3.6.1 Three-phase common compensation wiring diagram (with power factor automatic compensation controller)



  3.6.2 Three-phase hybrid wiring diagram (with power factor automatic compensation controller)


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