Reactive power compensation controller

Product Introduction

Fully digital design, AC sampling, human-machine interface using large screen LCD display, capable of real-time display of power factor, voltage, current, active power, reactive power, total harmonic distortion rate of voltage, total harmonic distortion rate of current, frequency capacitor output display and switching status, alarm and other information for L1, L2, and L3 phases. Chinese prompts for parameter setting and digital input. The capacitor control scheme supports three-phase compensation, split phase compensation, and comprehensive compensation schemes, and the control scheme can be set through menu operation. The capacitor theft control program supports equal capacitance, encoding, and fuzzy control switching methods. There are two working modes: manual compensation and automatic compensation. The sampled physical quantity is reactive power, with harmonic measurement and protection functions. The controller has RS-485, MODBUS standard field bus communication interface, which is convenient for accessing the intelligent switchgear system.

Product List

Technical Parameter

※ Control physical quantity: reactive power takes into account power factor.

※ Control object:

MCDD - * * D, dynamic controller, control regulator or composite switch;

MCDD - * * J, static controller, controlling AC contactors.

※ Dynamic response time: MCDD - * * D-type ≤ 20 milliseconds.

Sensitivity: ≥ 20 mA.

※ Working voltage: PS1 and PS2 terminals, with an allowable voltage range of AC (85V~265V) or DC (120V~370V), for both AC and DC purposes.

※ Input voltage: L2, L3 terminals, AC 100V~750V

Input current: I11, I12 terminals, 0-5A (supports 0-1A on the secondary side of current transformers, but ordering must be specified).

※ Frequency range: 50 or 60 Hz+/-5% (automatically adapted to grid frequency).

※ Input current impedance:<0.1 Ohm.

※ Controller energy consumption: MCDD - * * D ≤ 10VA; MCDD - * * J ≤ 20VA.

※ Output point rating:

Type J: Maximum inductive load AC 250V/2.0A.

Type D: Maximum DC12V/50mA.

Function Parameter

※ Target power factor setting: from 0.5ind (inductive) to 0.5CAP (capacitive).

※ Switching delay: The maximum duration of low voltage is 99.99 seconds, and the maximum duration of high voltage is 9999 seconds.

※ Switching mode: Cyr, Line, or Fast.

※ Save function: All programmed parameters and modes are saved in a non-volatile memory.

※ Power outage protection: In case of power outage or voltage reduction, it will quickly and automatically disconnect within 20ms (50Hz).

Installation and working environment

External dimensions: 148 * 148 * 76mm (length * width * thickness).

※ Installation opening size: 138 * 138mm.

※ Weight: About 500g (depending on the number of groups and communication function).

※ Protection level: Shell protection level IP30; The protection level of the panel is IP40.

※ Working temperature: -20 ° C to+55 ° C.

※ Storage temperature: -25 ° C to+70 ° C.

Front and back view

install

1. Slide the controller into the opening on the installation panel of the capacitor cabinet.

2. Push the buckle into the installation slot and push it forward until the controller is secured.

3 Installation completed.

Wiring diagram 1 (J-type, relay contact output)

Wiring diagram 2 (D-type, DC 12V output)