Tel: 86-577-67302790 67398303
Email: JIUKANG@JIUKANG.COM
PRODUCTS
JKFK-60A
    Publish time 2018-07-13 11:37    

General Description

JKFK series intelligent blend switching device for power capacitor(hereinafter called switching device), is mainly used for switching on/off low voltage power capacitor of reactive power compensating system with AC 50Hz-60Hz, rated voltage 220V or 380V The character: no switching surge current, low loss, no noise, stability, reliability.


Function features

JKFK blend switching device composed of three pcs of independent combination switches, is suitable for switching on/off the low voltage reactive power compensating capacitor bank. The working theory is that its controllable silicon shunt connected with magnetic positioned relay, this will realize that the switching device make or break the capacitor at the moment of ratings through zero via controllable silicon, and during closing it does not have power loss same as contactor.


1. Switch under zero rating: The working theory is that its controllable silicon shunt connected with magnetic positioned relay, this will realize that the switching device make the capacitor at the moment of voltage through zero and break the capacitor at the moment of current through zero via controllable silicon, and consequently it will not happen to surge current, during its closing it has no electric power loss Operating methods: during switching on, at the moment of voltage through zero the controllable silicon circuit is closed at first, after stabilized the magnetic positioned relay is absorbed to be closed; during switching off, at first break the magnetic positioned relay, the controllable silicon circuit delay to open at the moment of current through zero.


2. Chipset used for switching on/off and intelligently monitor the controllable silicon, magnetic positioned relay and input power source and load running status, has complete protection functions: Voltage fault phase failure protection: when system voltage supplie under phase failure, the switching device cant be closed. Power supply phase failure protection: when working power source supply under phase failure, the switching device can't be closed. Self detected fault protection the system can automatically monitor the working status
of controllable silicon circuit, magnetic positioned relay. Once fault occur, it will prevent closing or automatically switching off Protection power cut: when closed but power cut suddenly, it will automatically trip.

3. No harmonic wave input: due at the moment of closing it controlled by the controllable silicon circuit via touch -off under ratings through zero and after delayed magnetic positioned relay absorbed and make closing and during working the relay will not come out the harmonic wave.


4. Low loss: cause magnetic positioned relay used, the control device will consume the electricity only at the moment of switching on/off, during working period, it has no loss, more due the contacting resistance of re lay is small, it will not become heat, certainly it does not need radiating plates or fan, saving the cost. Completely it avoid the controllable silicon circuit being burnt, and it does not influence on other electric apparatus, at finally it realize the purpose of energy saving and reducing cost.


5. The input signal is isolated from combined switch by photoelectric: high interference resistant, safe reliable operation.


Main Technical Parameter

1. rated working voltage: 380V, 220V/AC±20%

2. rated frequency: 50Hz±5

3. controlled capacity:( three phases s 30Kvar: ADelta connection)(single phase< 10Kvar: Y Star connection)

4. circuit loss: ≤1.5VA

5. outline dimension 126mmx 156mmx128mm

6. interval between each switching on/off: ≥ 1s

7. Interval between two operations of switching on: >100s(NB: when switch device is just energized or closed after opening, it shal delay 100s (fixed)
8. starting voltage: DC 8-18V

9. distortion rate of voltage: ≤5%

10. working life: 100,000 times /100 thousand times

11. response time:≤1000ms

12. closing resistance: ≤ 0.003 Ω

13. fixed size: 77mmx138mm

14. input resistance: ≥5.1K Ω

15. working power source voltage: 220V

16. maxi rated current: 45A

17. voltage drop on contact: ≤100mV

18 withstand voltage of contact: ≥1600V

19. insulation level: under normal ambient conditions,≥10M


              Connection                                                                                                         Installation dimensions