Automatic reactive power compensation controller | 16 steps | 400V | power factor control | for automatic control of capacitor banks

Technical Specifications

Product type: automatic reactive power compensation controller
Number of compensation steps: 16 steps
Rated operating voltage: 400V
Power supply voltage: AC 220V / 380V
Rated measuring current: AC 0~5A
Rated network frequency: 45Hz ~ 65Hz
Measured reactive power: 0 ~ 9999 kvar
Sensitivity: 60mA
Displayed power factor: Lag 0.001 ~ Lead 0.001
Static output contact load: AC 220V 7A
Dynamic output contact load: 12V / 10mA
Operating ambient temperature: -25°C ~ +55°C
Relative humidity: ≤50% at 40°C / ≤90% at 20°C
Maximum installation altitude: ≤2500 m
Permissible environmental conditions: free from harmful gases, vapors, conductive or explosive dust, without strong vibration
Installation dimensions: 144 x 87 x 144 mm

Functions

Automatic capacitor bank control - the controller analyzes the network load in real time and automatically switches on or off up to 16 capacitor stages according to the actual reactive power demand.
Power factor (cos φ) optimization - helps maintain the electrical system power factor close to the ideal value, thus reducing network losses and possible penalty charges from the energy supplier.
Accurate reactive power measurement - a measuring range up to 9999 kvar allows the controller to be used both in smaller commercial panels and in large industrial compensation cabinets.
16 independent control stages - a high number of stages ensures extremely precise compensation control even under frequently changing loads.
Suitable for both contactor and static control - both static and dynamic outputs allow the controller to be integrated into various types of capacitor compensation systems.
Stable operation in demanding industrial environments - a wide temperature range and resistance to industrial environmental conditions allow safe use of the controller in electrical cabinets, production lines, and power engineering equipment.

Application

For household users / owners of larger households: Although such controllers are used less frequently in residential applications, they become relevant in large private houses with powerful workshops, farms, agricultural facilities, workshops with three-phase equipment, systems with many pumps, compressors, or ventilation devices.
For electricians: This is one of the main components when assembling reactive power compensation panels, capacitor bank cabinets, automatic power factor correction systems, and industrial distribution boards.
For engineers / energy specialists: For energy and electrical system professionals, this device allows designing more efficient electrical systems, reducing reactive power losses, optimizing load balance, protecting the network from unnecessary current circulation, and ensuring higher energy efficiency.
For industrial companies and commercial facilities: Suitable for factories, metal processing workshops, woodworking lines, elevator and ventilation systems, refrigeration equipment, shopping centers, and office buildings with central engineering infrastructure.

Advantages

Automatic control of up to 16 capacitor stages
Significantly improves power factor cos φ
Reduces reactive energy losses
Helps reduce possible electricity supply charges
Suitable for both small and large compensation systems
Accurate measurement up to 9999 kvar
Resistant to industrial environmental conditions
Wide operating temperature range
Suitable for long-term continuous operation
Professional and essential component for energy-efficient systems

Disadvantages

Requires correct matching with capacitor banks and current transformer
Electrical engineering knowledge is required for installation
Not a household “plug and play” device
The greatest benefit is revealed only in systems with inductive loads

What is the main benefit of this device?

The main benefit is lower electrical energy losses, improved power factor, a more stable network, and more efficient operation of the entire electrical system.

Is a current transformer required?

Yes, for accurate monitoring of the network load, a current transformer signal of 0–5A is required for the measuring circuit.

Is this controller suitable for all capacitor banks?

Yes, if the capacitor banks are controlled in stages through contactors or static switches. The 16 stages allow connection of a fairly large compensation system.

Can it be used in an industrial company with three-phase motors?

Yes, this controller is most commonly used in exactly such systems – it is especially effective where many inductive loads are operating.