Reactive Power Automatic Compensation Controller | Intelligent Capacitor Bank Control | 400V | 12 Steps | LED Display | cosφ Control

Technical Specifications

Product type: automatic reactive power compensation controller
Purpose: automatic control of capacitor banks
Network type: low voltage distribution systems
Rated operating voltage: 400V ±20%
Measurement voltage range: 100V ~ 500V
Current measurement range: 0 ~ 6000A (primary current)
Sensitivity: 50mA (secondary current)
Measured power factor: lag 0.2 ~ lead 0.2
Active power measurement: 0 ~ 6553 kW
Reactive power measurement: 0 ~ 6553 kVAr
Measurement frequency: 47Hz ~ 53Hz
Number of outputs: 12 steps
Operating modes: automatic compensation, manual compensation
Compensation algorithms: cyclic according to power factor, precise according to reactive power
Display: LED digital display
Data refresh rate: ≤1 s
Parameter setting: digital input + English language menu
Dimensions: 122 x 100 x 122 mm
Operating ambient temperature: -20°C ~ +60°C
Storage temperature: -40°C ~ +70°C
Maximum installation altitude: ≤2500 m
Environmental requirements: no corrosive gases, no conductive dust, no strong vibration, protection from rain and snow exposure

Functions

Automatic reactive power compensation - the controller automatically switches capacitor stages on or off according to the electrical network load in order to maintain optimal system operation
Real-time power factor (cosφ) control - the power factor is continuously monitored and the system reacts precisely to load changes, reducing unnecessary reactive current flow
Precise capacitor stage control - both cyclic and precision compensation modes are supported, ensuring balanced capacitor operation and longer service life
Manual and automatic operating mode - allows both fully autonomous control and manual stage testing or technical maintenance
Voltage, current, active and reactive power measurement - the most important electrical network information is displayed on the LED screen in real time
Capacitor stage status indication - the user can clearly see which compensation sections are currently active
Fast data refresh - all parameters are updated in less than 1 second, therefore compensation response is carried out quickly
Resistance to electromagnetic interference - stable and reliable operation even in industrial systems with frequent load fluctuations

Applications

For industrial companies and factories: Suitable where many electric motors and reactive power generating loads are operating
For electricians: Convenient to install into compensation cabinets, clear wiring, standard panel format
For electrical engineers: Allows precise power factor control, analysis of network loads, and design of efficient compensation systems
For commercial building maintenance: Useful in business centers, commercial premises, workshops, where a lot of ventilation and cooling equipment is used
For solar and hybrid energy system integrators: Helps stabilize the overall electrical parameter balance of the facility under unstable loads

Advantages

Very precise reactive power compensation
Reduces network loading and losses
Improves power factor
Reduces penalties for poor cosφ
Suitable for high currents up to 6000A
Clear LED display
Manual + automatic mode
Resistant to electromagnetic interference
Stable industrial operation

Disadvantages

Designed for professional systems, not for simple household installation
Correct selection of current transformers is required
Maximum efficiency is achieved only with a properly calculated capacitor bank
Installation is recommended to be carried out by a qualified specialist

What is this reactive power compensation controller intended for?

This device is intended for automatic control of capacitor banks in a low voltage electrical network in order to improve the power factor (cosφ), reduce reactive power and optimize the overall operation of the electrical system.

Does the controller switch capacitors on and off by itself?

Yes, the controller independently analyzes the network load and automatically switches the required capacitor stages according to the set parameters.

Which electrical parameters are shown on the display?

The LED display shows voltage, current, power factor (cosφ), active power, reactive power, as well as the status of active capacitor stages in real time.

What is the main benefit of this controller?

Using this controller reduces electrical network losses, decreases the load on cables and transformers, improves the power factor, and increases the energy efficiency of the entire system.