▼Product features:

1. Low power LCD Chinese display screen, real-time monitoring of power grid parameters, display setting parameters and working status;

2. The sampling physical quantity is reactive power, no switching oscillation and no compensation dead zone;

3. It has two operation modes: manual switching and automatic switching;

4. Logic switching mode, the capacity of each group can be set freely.

▼Product function:

1. Display / setting

(1) Operation parameters: power factor, voltage, current, active / reactive power, voltage total harmonic distortion rate, capacitor switching status and fault display;

(2) Setting parameters: current ratio, overvoltage protection, harmonic setting, on / off delay, on / off threshold, coding mode, number of capacitance channels, capacitance capacity and other setting parameters, parameters can be automatically memorized, and power failure will not be lost.

2. The output can adapt to thyristor switch, composite switch, composite contactor, AC contactor or vacuum contactor and other switching elements, with each DC12V, 60mA or AC220V, 5A.

3. Protection

(1) It has the functions of self check reset and automatic reset;

(2) It has the function of under voltage and over voltage protection;

(3) It has the function of harmonic overrun protection;

(4) When the power grid fails or a certain parameter exceeds the limit, the alarm indicator flashes, indicating overvoltage, undervoltage or a certain parameter exceeds the limit.

4. 485 communication port (option).

▼Technical parameter

Basic parameters

(1) Power supply voltage: AC220 V ± 20% 50 Hz ± 5%

(2) Sampling voltage: AC380V

(3) Sampling current: 0 ～ 5A

(4) Power consumption: ≤ 15W

(5) Sensitivity: ≥ 100mA

measurement accuracy 

Voltage: ± 0.5%

Current: ± 0.5%

Power factor: ± 1.0%

Active power: ± 2.0%

Reactive power: ± 2.0%

Control parameters

Current ratio: 1-1000

Overvoltage setting: 230v-280v, step size 1V

Undervoltage setting: 180v-210v, step size 1V

Harmonic voltage setting: 1% - 25%

Switching delay: 0.1s-600s (0.02s-600s, DSP)

Harmonic current setting: 1% - 100%

Number of capacitance channels: 1-12 (16)

Target power factor: 0.8-1.00

Capacitance value: 0-200kvar, step size: 1

Switching threshold: 0.5-1.2, step size: 0.1

Output contact: 12 (16) channels, each channel DC12V, 60mA or AC250V, 5A

File Download：JKWF series instruction.pdf