<strong>Summary</strong> <br> HKKFK composite switch is a kind of composite switch which uses intelligent chip, digital circuit and magnetic latching relay torealize voltage zero crossing conduction and current zero crossing cut-off, so that the switch can be switched on and off completely without overvoltage. Switches have many advantages, such as no inrush current, very low power consumption, high life, low failurerate and so on.

Product advantages
After receiving the external control signal, through intelligent judgment, it can automatically find the best switching point toensure zero crossing switching, small inrush current, non sintering contact, low energy consumption, and has the functions ofvoltage abnormal protection, phase failure protection, component faultprotection and operation indication.Compared with similarproducts, hkkfk series intelligent low-voltage composite switch has greatly improved inrush current,safety and reliability.

Product classification
1.Three phase common compensation type: the connection mode of compensation capacitor istriangle connection (expressed by△)
2.Three phase compensation type: the connection mode of compensation capacitor is star connectio
(expressed by Y)

Main technical features
1.Protection function
Microprocessor is used to monitor the operation of relay, input power and load in real time, which has perfect protectionfunction.
Voltage fault phase loss protection: when the system yoltage is short of phase power supply, the switch refuses to close, nd ifthere is phase loss after connection, it will be automatically disconnected.

Main technical features
Phase loss protection of power supply voltage: when the working power supply is short of phase, the switchcabinet is absolutely closed, and it will be automatically disconnected in case of phase failure after connection.Self diagnosis fault protection: the system automatically monitors the operation
status of the relay, and refuses to close or automatically disconnect in case of fault.When no-load switch is connected: refuse to close the load switch.
Power failure protection: after connecting, in case of sudden power failure, it will be automatically disconnected.2.Low power consumption
The relay only consumes power at the moment of switching, and does not
consume power at ordinary times, so as to save energy and reduce consumption.3. Work safety
All control input signals are safely isolated from the internal circuit. At the same time, advanced intelligent control technologyand patented devices are adopted.Compared with similar products, it has extremely high performance advantages in inrushcurrent and safety and reliability.


Main technical indicators
1.Ambient temperature: - 20 ℃ ~+ 55℃
2.Relative humidity: 20% 90% at 40 ℃
3.Rated voltage: 380V /220V, three-phase four wire AC, 50 Hz
4.Allowable deviation: the synchronous change of three-phase voltage shall not be greaterthan± 20%
5.Voltage distortion rate: less than 5%
6.Rated frequency: 50 Hz
7.Rated current: (ordinary type)<80A; (with circuit breaker)<80A
8.Service life: 500000 times;
9.Number of phases: three phase (A connection) single phase (Y connection)
10.Three phase control capacity: < 40kvar
11.Single phase control capacity: < 10kvar
12.Power consumption: <1.5va
13.Contact pressure drop: <100mV
14.Contact withstand voltage: > 1600V
15.Response time:<1000ms
16.Turn on and off interval: > 5 seconds
17.Interval between two successive connections:= 35 seconds
18.Control signal: DC12V±20%; AC / communication (optional)
19.Input impedance: > 6.8K
20.On impedance: <0.0032
21.Inrush current: less than 1.5 times of rated current
22.Rated current of feedback contact: 1A (input is on)

Outline and installation dimensions


wiring method