JKLD21 series dynamic reactive power compensation controller features:

When the load current of the power grid is large (sampling current>0.5A), the sampling physical quantity of the product is power factor, which controls the switching of compensation capacitors according to the size of the power factor of the power grid. Therefore, it is suitable for power grids of various sizes and is not limited by the size of switching capacitors or the ratio of sampling current transformers In use, it generally does not require adjustment and can work stably
When the load current of the power grid is low (sampling current<0.5), the controller automatically enters the undercurrent working state, starts the reactive current detection system, and samples the physical quantity of reactive current to avoid oscillation switching phenomenon
2. It has output channels ranging from 2 to 12, which users can set themselves
3. The output circuit adopts a cyclic working mode of "connect first, disconnect first" to ensure that each contactor and capacitor operates the same number of times, extending the fault free working time 4. It has overvoltage protection function to prevent capacitors from being damaged during operation under overvoltage conditions
5. Equipped with an "automatic/manual" shift switch for easy debugging
6. Automatically distinguish the positive and negative phases of the incoming line, making installation and debugging very convenient
7. Adopting the new generation microcontroller from MICROCHIP company in the United States, it overcomes the disadvantage of electronic circuits being susceptible to interference and works reliably and stably

Usage conditions:
1. The altitude shall not exceed 2000m
2. The ambient air temperature is between -20 ℃ and+55 ℃, and the average temperature within a 24-hour period does not exceed+35 ℃
3. The surrounding environment is free of corrosive gases, conductive dust, and explosive and flammable media
4. The relative temperature should not exceed -50% at+40 ℃ and 90% at+20 ℃, without condensation
5. The voltage fluctuation range is plus or minus 20%
6. The vibration frequency range of the installation site is 10-150Hz, and the maximum vibration acceleration is not greater than 5m/S2
Technical Specifications:
1. Investment threshold: 0.95 (adjustable from 0.9 to 1.0)
2. Cut off threshold: 1.0 (adjustable from -0.98 to -1.0)
3. Overvoltage protection:
When the rated voltage is 380V, it is 440V (adjustable from 400V to 440V)
When the rated voltage is 220V, it is 265V (230-265)
4. Delay time: 100ms (adjustable from 20ms to 5000ms).
5. Rated working voltage: AC 50Hz 380V, (220V optional)
6. Current sampling input: ≤ 5A (AC)
7. Undercurrent: 0.5A (activate reactive current detection system)
8. Sensitivity: 0.1A, dielectric strength: 2500VAC
9. Overvoltage interruption time: not more than 100mS
10. Output capacity: 100mA/15VDC branch.
11. Protection grade: not less than IP40
12. Work status, continuous work system
Size and installation:
1. The external dimensions and installation dimensions are shown in Figure (1).
2. When installing, insert the hook of the installation accessory into the injection hole on the side of the controller, and turn the accessory screw to fix the machine on the screen.
3

JKLD21 Type III Dimensional Drawing


JKLD21 Type II Dimensional Drawing

JKLD21 series dynamic reactive power compensation controller