Roswell Reactive Power Compensation Jkwf Controller 21b

ROSTJKWF series of large-screen display multi-functional automatic controllers are suitable for reactive power control output 12 channels, have RS-485 communication interfaces, support MODBUS communication protocol, adopt 128 × 64 Chinese LCD, AC sampling, harmonic protection, with three control methods of three-phase, split-phase, comprehensive compensation, enabling display of power factor, voltage, current, active power, reactive power, total harmonic distortion rate, frequency and time of L1, L2, L3 phases of the measuring system, reactive control has the overvoltage, undervoltage, open phase and voltage harmonic overrun protections, and all set data can pass through the background management software and cannot be lost after power failure.

Three-phase co-compensation, three-phase splitting compensation and three-phase mixed compensation functions;
Three-phase voltage, current, power factor, active power, reactive power, frequency measurement and display;
Total harmonic distortion rates of three-phase voltage and current, measurement, display and control;
Support constant volume and coding control and fuzzy-control switching mode, grouping
RS485,Modbus;
With RS485 communication interface, Modbus protocol mode;
Temperature measurement and control;
Automatic and manual modes.

Technical Data:
Mode of line measurement: three-phase or split-phase
Measuring voltage: 110V-280V, 50Hz
>Operating voltage: 220V20%, 50Hz
Measuring current: 5A-280V, 50Hz
Input impedance: <1Ω
Current ratio: 50/5A-400/5A
Overvoltage protection: 240V-290V, step size 2V set
Undervoltage protection: <185V
Target cosΦ : 0.90-1.00 step size 0.1 set
Capacitor grouping:1-99Kvar/group
Switching delay: 20ms-600s
Harmonic control: 5%-25% THD value
Switch-on threshold: 1.2Qc value
Switch-off threshold: ≥target cosΦ
ID address: 001-254 No. (with communication)
Installation dimensions: Hole 113×113mm, panel 144×144mm