JKW-3SC Three phase common compensation intelligent reactive power compensation controller

Main purpose and scope of application
JKW-3 series intelligent low-voltage reactive power compensation controller (controller for short) is a special equipment for low-voltage power distribution system to compensate reactive power. It is based on the industry standard of the People’s Republic of China JB/T9663 and the power industry standard DL/ T597 design. The sampled physical quantity is reactive power, and the switch signal output controls the AC contactor to switch on and off the power capacitor. It has the advantages of beautiful appearance, novel design, multiple functions, good control performance, and high reliability. It is in a leading position among similar domestic products and provides a brand-new equipment for power distribution automation. The
wordsdisplayed when this series of products are powered onindicate the program version of the product.
This product complies with: industry standard JB/T9663-2013 (our company is the main drafting unit of this standard).

Model and meaning

Working conditions
1. Power supply voltage: the rated value is AC 380V, and the fluctuation cannot exceed ±20%;
2. Ambient temperature: -25℃~55℃;
3. Relative humidity: the maximum relative humidity is 90% (at 20℃);
4 , Altitude: no more than 2000m;
5. Environmental conditions: no explosive and flammable dangerous media, no gases that corrode metals and conductive dust that damage electrical insulation;

Main technical parameters
1. Rated current: AC 0~5A;
2. Rated voltage: AC 220V/380V;
3. Contact capacity: AC220V/7A or AC380V/3A per
branch; 4. Current input impedance: ≤0.02Ω;
5. Shell protection grade: IP30;
6. Frequency: 50Hz;
7. Sensitivity: 50mA;
8. Insulation voltage: 690V;

Features
1. Real-time display of network conditions: including reactive power, power factor, secondary current, primary current, system voltage, etc. (by clicking the up and down keys to switch during automatic operation).
2. Automatically identify the polarity of the sampling signal, and there is no concern about the polarity of the wiring.
3. It has the function of power-off memory for setting parameters, and the data will not be lost after power-off.
4. With over-voltage and under-voltage protection functions.
5. With dual input threshold: it is required that the power factor is lower than the input threshold setting value and the reactive power is greater than the minimum set of capacitors before it can be used to effectively prevent switching oscillations.
6. The input and removal delays are separately adjustable, which is more applicable to the power grid.
7. Capacitor capacity input function, automatic identification numbering method for optimized switching.
8. There is a settable re-investment lock time to ensure that the capacitor has enough discharge time before being turned on.
9. The output signal can be set to close a certain group or open a certain group of work.
10. Various parameters are all digitally adjustable, which can be widely applied to different power grid conditions.
11. Strong anti-interference ability, can directly resist interference pulses from peripheral common mode amplitude 2000V.

Factory setting values of various parameters

Main specifications and models

 Wiring schematic diagram