Main technical features
HZ-FK composite switch is a combination of smart chip and digital circuit and magnetic holding relay to realize voltage zero-crossing and current zero-crossing, so that the switch is turned on and off.It is completely zero-crossed and
does not generate overvoltage. The switch has many advantages such as no inrush current, very low power consumption, high life, low failure rate, etc., and is widely used in the field of low voltage reactive power compensation.

Product advantages
After receiving the external control signal, it automatically finds the best switching point through intelligent judgment, ensures zero-crossing switching, small inrush current, no sintering of contacts, low energy consumption, and voltage abnormal protection. Phase loss protection, component fault protection, operation indication and other functions. BYFK series intelligent low-voltage composite switch has greatly improved inrush current and safety reliability compared with similar products.

  Product categories
Three-phase common compensation type: the wiring method of the compensation capacitor is delta connection (indicated by △) Three-phase compensation type: The wiring method of the compensation capacitor is star connection (indicated by Y)

Main technical features
  Protective function
The microprocessor is used to monitor the relay and the operation status of the input power and load in real time, with perfect protection.
Voltage fault phase loss protection: When the system voltage is out of phase, the switch refuses to close, and if there is a phase loss after the switch, it will automatically open.
Power supply voltage phase loss protection: When the working power supply is out of phase, the switch refuses to close. If there is a phase loss after the power is turned on, it will automatically disconnect.
Self-diagnosis fault protection: The system automatically monitors the running status of the relay. If there is a fault, it refuses to close the circuit or automatically disconnect.
No-load protection: The switch refuses to close when the load is not connected.
Power failure protection: After power-on, if it suddenly loses power, it will automatically disconnect.
Low power consumption
The relay only consumes electricity at the moment of switching, and does not consume electricity at ordinary times, thereby achieving energy saving and consumption reduction.
Main Specifications

Action security
All control input signals are safely isolated from internal circuits, and advanced intelligent control technology and patented devices are used. Compared with similar products, they have extremely high inrush current and safety reliability.Performance advantage.

Main Specifications
Ambient temperature: -20℃~+55℃ Relative humidity: 20% 90% at 40℃
Rated voltage: 380V/220V three-phase four-wire AC 50Hz
Allowable deviation: Synchronous cross-phase of three-phase voltage is not more than ±20% Voltage distortion rate: less than 5%
Rated frequency: 50Hz
Rated current: (normal type) <80A; (with circuit breaker type) <80A Service life: 500,000 times;
Phase number: three-phase (△-type connection) single-phase (Y-connection)
Three-phase control capacity: <40Kvar Single phase control capacity: <10Kvar Power consumption: <1.5VA
Contact pressure drop: <100mV Contact withstand voltage: >1600V Response time: <1000ms
Each turn-on and turn-off interval: >5 seconds Two consecutive turn-on intervals: =35 seconds
Control signal: DC12V±20%; AC communication (optional) Input impedance: >6.8K
On-resistance: <0.0032
Inrush current: less than 1.5 times the rated current Feedback contact rated current: 1A (input is on)