Intelligent Controller

JKW Series Reactive Power Automatic Compensation Controller

The JKW series automatic reactive power compensation controller employs AC sampling technology, using the fundamental power factor and fundamental reactive power as control physical quantities to ensure high control accuracy, no switching oscillations, and insensitivity to harmonics. All control parameters are digitally operated, simplifying use and preventing data loss due to power outages. This controller utilizes automatic optimization control to reduce switching frequency, extend system lifespan, and possesses strong anti-interference capabilities, able to withstand 2000V interference pulses without crashing or losing data, ensuring stable and reliable operation.

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Product Description

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.

  • Adopting AC sampling technology;
  • Using fundamental power factor and fundamental reactive power as control physical quantities, high control accuracy, no switching oscillation, and insensitive to harmonics;
  • All digital operation of control parameters,easy to use,one step in place, without losing power outage data;
  • Adopting automatic optimization control to reduce switching freauency and improve the service life of the system;
  • Strong anti-interference ability,able to withstand 2000V interference pulses directly input from the power supply,without crashing or losing data, stable and reliable operation;
  • Digital display of power factor,reactive power,voltage,current (primary side), control parameters of the power grid;
  • There are two working modes: power factor mode and reactive power control mode,which are convenient for users to install and debug;
  • It has the function of judging and displaying over voltage and under voltage, and quickly cutting off the capacitor bank to prevent the capacitor bank from operating under over voltage conditions;
  • With optional switching oscillation locking function (users need to indicate when ordering);
  • With the optional function of delaying a 200 second delay from the cutting of time to the input time of a single set of capacitors,there is suficient discharge time after the capacitor bank is cut off,reducing the impact on the power grid when the capacitors are put into operation again (users need to specify when ordering);
  • The input resistance of the current sampling signal is less than 0.05 ohms and can be directly taken out of the metering circuit;
  • There are two compensation modes: power factor and reactive power;
  • The user manual provides a large number of troubleshooting methods for easy installation and debugging.

Main Technical Parameters

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

Wiring Method

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