Reactive compensation controller

First, the product overview

RMD series reactive power compensation controller is based on reactive power as a sampling physical compensation controller. The controller can reliably operate in harsh conditions such as large harmonics, non-sinusoidal current, strong interference and other adverse grid environment, the advanced unique word adaptation function to ensure the safe use of power capacitors, the real power capacitor to achieve safe and effective improvement Power factor of the grid.

Second, the model description

Third, the performance characteristics

n all digital design, using AC sampling algorithm, human-machine interface using large-screen LCD Chinese liquid crystal display

n Adhering to the people-oriented design concept, modular assembly, the appearance of streamline design

n Real-time display voltage, current, power factor, active power, reactive power, voltage total harmonic distortion rate, current total harmonic distortion rate, frequency, temperature, capacitance output display and switch the state alarm and other information

n with 12/18/24 control output, support for three-phase compensation, phase compensation, comprehensive compensation program, the use of dynamic and static two compensation methods, with manual compensation and automatic compensation of two working methods

n Capacitor switching control program supports isosceles, coding (1: 2,1: 2: 3,1: 2: 4: 8 ...) and fuzzy control switching mode

n sampling physical amount of reactive power, with harmonic measurement and protection

n with RS-485 standard bus interface, support for Modbus-RTU communication protocol, suitable for complete sets of intelligent power distribution cabinet, smart box variable data acquisition, reactive power compensation

Technical indicators

l standards meet JB / T9663-199 requirements

l signal input

Rated current AC 5A (current transformer secondary side)

Rated voltage 220V / 380V

Frequency 50 / 60Hz

l Auxiliary power supply

Working range AC 220V ± 20%

l measuring range

Power factor lags from 0.200 to 0.200 ahead of schedule

l measurement accuracy

Voltage 0.5 level

Current 0.5 level

Power factor 1.0 level

Active power 1.0 level

Reactive power level 1.0

Frequency ± 0.1Hz

l communication function

RS-485 communication Modbus-RTU protocol, baud rate

4800 ~ 38400bps (no parity bit)

l control output

Output circuit 10 or 12 Road

Relay output dry node method, AC 250V / 5 resistance

Sex

Level output DC 12V 30mA / branch

l reliability

Mean time between failures ≥ 250000h

Environment

Working temperature -20 ℃ ~ +60 ℃

Storage temperature -40 ℃ ~ +70 ℃

Altitude ≤ 2500m

Ambient conditions No corrosive atmosphere, none

Conductive dust, non-flammable and explosive medium

Quality exists, installation site without violent vibration, no rain and snow erosion

l Dimensions

Face frame size (mm) 120 × 120

Hole size (mm) 113 × 113

Specifications selection

Fourth, the typical connection

1. A total of 12 Road + points complement 4 Road program, static type wiring

Note: When the contactor coil is 220V, the J point connects to the N phase. When the contactor coil is 380V, the J point connects to the B phase or C phase.

2. A total of 24 programs, static type wiring

Note: When the contactor coil is 220V, the J point connects to the N phase. When the contactor coil is 380V, the J point connects to the B phase or C phase.

3. Complement a total of 12 + points up 4 Road program, dynamic wiring

4. Complement a total of 24 programs, dynamic wiring

Fifth, the installation size