Overview
The HYFK Composite Switch is composed of three independent composite switches with the rated working voltage of AC 380 V and 220 V± 20%, and is suitable for on-off control over low-voltage reactive power compensation capacitor banks. The basic working principle of the composite switch is to connect the thyristor and the magnetic holding relay in parallel, so that the composite switch has the advantage of zero-crossing switching of the thyristor at the moment of turning on and off, and has the advantage that the contactor is switched without power consumption during the normal turningon period.
The product complies with GB14048.4-2010 Low-voltage Switchgear and Controlgear – Part 4-1: Contactors and Motor-starters (Including Motor Protector).
Model description
1. Product classification: Common compensation type (the connection method of capacitors is delta connection); Sub-compensation type (the connection method of capacitors is Y connection).
2. See the product model table in the following table
Main Technical Parameters
1. Ambient temperature: -20°C–+55°C
2. Relative humidity: 20%–90% at 40°C
3. Rated voltage: 380 V/220 V three-phase four-wire AC 50Hz
4. Permissible deviation: The three-phase voltage synchronous change is not more than ±20%
5. Total harmonic distortion of voltage: Less than 5%
6. Rated frequency: 50Hz
7. Rated current: ≤ 60A
8. Service life: 100,000 times operations
9. Number of phases: Three-phase (△ connection); single-phase (Y connection)
10. Three-phase control capacity: ≤ 30 Kvar
11. Single-phase control capacity: ≤ 10Kvar
12. Power consumption: ≤ 1.5VA
13. Contact voltage drop: ≤ 10mV
14. Contact pressure: > 1,600V
15. Response time: ≤ 1,000ms
16. Interval between turn-on and turn-off each time: ≥ 5s
17. Interval between two consecutive times of turn-on: ≥ 35s
18. Control signals: DC 12 V ± 20%; AC/Communication (optional)
19. Input impedance: ≥ 6.8K
20. Lead-through impedance: ≤ 0.003Ω
21. Inrush current: Less than 1.5 times of rated current
22. Rated current of feedback contact: 1A (input is turn-on)
