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The JKW series reactive power automatic compensation controller (referred to as the controller) is a specialized equipment for compensating reactive power in low-voltage distribution systems, designed according to the industry standardJBT9663-2013of the People’s Republic of China and the power industry standardDUT597-1996.Its sampling physical quantity is reactive power, which has the advantages of novel design, multiple functions, good control performance, and high reliability, it is in a leading position among similar products in China and provides a new equipment for distribution automation.

Basic Parameters
| Project | Parameter |
| Rated voltage | AC380/AC220V+10% |
| Rated current | AC0-5A |
| Rated frequency | 50Hz±5% |
Control Parameters
| Project | Parameter |
| Sensitivity | 100mA |
| Target COS Φ preset | 0.70-1.00; Step size 0.01; Factory preset 0.95 |
| Switching delay | 1~!250s |
| Over voltage protection | 380~500/230~260V; Step size 1V; Retumn difference 6V |
| Under voltage protection | 340V/180V; Return difference 6V |
| CT changes | 5015A~4000/5A; Step size 1 |
| Capacitive capacity | O~125Kvar, factory preset 5Kvar for each branch |
| Contact rating | 380V*5A/220V*7A Per branch |
Measurement Accuracy
| Project | Parameter |
| Voltage | ±1.0% |
| Current | ±1.0% |
| Power Factor | ±1.0% |
| Reactive Power | ±2.0% |
Adjustable Range And Factory Setting Values Of Control Parameters
| Parameter code | Meaning | Setting | Adjustable range |
| PA-1 | COS preset | Hysteresis 0.95 | Lag 0.8-100 |
| PA-2 | Delay preset | 30s | 1-250s |
| PA-3 | Over voltage preset | 430V | 230~260V/380~500V |
| PA-4 | Circuit preset | 1-12 | 1-12 Circuits |
| PA-4* | CT Ratio preset | Actual configuration | 50~4000 |
| C-01 | 1st Circuit capacitor preset | Actual configuration | 0~150Kvar |
| C-12 | 12th Circuit capacitor preset | Actual configuration | 0~150Kvar |
| PA-5 | Cut preset | 1.00 | 0.70~0.70 |
Note:* In reactive power control mode
Main Specifications
| Model specifications | Dimension | Rated voltage(kV) | Signal frequency |
| JKW5C | 113x113mm | AC220V1380V | 50/60Hz |
| JKW5B | 162x102mm | AC380V | 50/60Hz |
| JKG2B | 162x102mm | AC22OV | 50/60Hz |
| JKW1B | 140x102mm | AC220V1380V | 50/60Hz |
| JKW58 | 140x140mm | AC220V1380V | 50/60Hz |
| JKWD5 | 113x113mm | AC220V/380V | 50/60Hz |
| JKWF-12 | 113x113mm | AC220V | 50/60Hz |
| JKWF-16 | 113x113mm | AC22OV | 50/60Hz |
| JKWF-16 | 140x140mm | AC22OV | 50/60Hz |
| RPCF-16 | 113x113mm | AC380V | 50/60Hz |
| Loop | Output | Compensation method |
| 1-12 loop | Static state | Co supplementation |
| 1-12 loop | Static state | Co supplementation |
| 1-12 loop | Static state | Co supplementation |
| 1-12 loop | Static state | Co supplementation |
| 1-12 loop | Static state | Co supplementation |
| 1-12 loop | DC12V | Co supplementation |
| 1-12 loop | Static state/DC12V | Co compensation+sub compensation |
| 1-16 loop | DC12V | Co compensation+sub compensation |
| 1-16 loop | Static state | Co compensation+sub compensation |
| 1-16 loop | Static state/DC12V | Co supplementation |

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