Chint JKF8
Control Relay
Intelligent reactive power compensation controller with combined power factor control to prevent surge switching under low load.
Product Overview
The JKF8 Intelligent Low-Voltage Reactive Power Compensation Controller is engineered for low-voltage distribution systems. Designed with 6 or 12 output loops, it supports rated voltages of 220V, 240V, 380V, and 440V at 50/60Hz. The unit features real-time monitoring of power factor, voltage, current, active power, and reactive power. With a sampling current range of 150mA to 5A and output contact capacity of 5A at 230V or 3A at 400V, it provides automatic polarity identification and capacitor bank switching control for distribution panels.
Technical Parameters
| Rated voltage | 380V,440V,220V,240V |
| Rated frequency | 50/60Hz±5% |
| Application Scope | Compensations for the reactive power of low voltage distribution system |
| Ambient Operating Temperature | -10℃ ~ +40℃ |
| Relative Humidity | ≤50% at 40℃, ≤90% at 20℃ |
| Operating Altitude | ≤2000 m |
| Output Loop Specifications | 6, 12 |
| Rated control coil voltage options | 220V, 400V |
| Sampling Current | 150mA ~ 5 A |
| Output Contact Point Capacity | 5A/230V (or 3A/400V) |
| Brand | Chint |
| Model | JKF8 |
| Product type | Control Relay |
Key Selling Points
✓ Combined reactive power and power factor control ensures reliable capacitor switching under low load and prevents switching surges.
✓ Real-time digital display monitors key network parameters including power factor, voltage, current, active power, and reactive power.
✓ Automatic sampling signal polarity identification prevents wiring errors during panel installation.
✓ Integrated safety protection features a 3-minute capacitor discharge switching delay.
✓ Available in 6-loop and 12-loop output configurations to match diverse capacitor bank requirements.
✓ Cyclic automated self-test function simplifies commissioning and factory acceptance testing.
Technical Highlights
- Rated Voltage: 220V, 240V, 380V, 440V (Un ± 20%)
- Rated Frequency: 50/60Hz ± 5%
- Output Loop Options: 6 or 12 loops
- Sampling Current Range: 150mA to 5A
- Output Contact Rating: 5A at 230V AC or 3A at 400V AC
- Switching Delay Time Lag: 5 to 120 seconds (30 seconds factory preset)
- Mounting Boring Dimension: 113mm ± 0.5mm x 113mm ± 0.5mm
Selection Guide
Select the JKF8 controller based on required output steps, available in 6-loop or 12-loop configurations. Verify system operating voltage across supported ratings of 220V, 240V, 380V, or 440V at 50/60Hz. Confirm sampling and coil voltage requirements for AC 220V or AC 400V connections. Switching time lag can be set between 5 and 120 seconds with a 30-second factory preset.
Reference Datasheet Pages
The following pages were selected from the model catalogue and are included for technical reference:
JKF8 Catalog and Technical Data
