Automatic Reactive Power Compensation Controller

Our Automatic Reactive Power Compensation Controller is an intelligent device designed to optimize energy efficiency in low-voltage networks. Its core functionality is based on calculating the required compensation capacity using reactive power, ensuring high compensation accuracy. The product boasts high precision in power factor measurement and offers a wide display range for clear monitoring. A key feature is its automatic phase recognition capability, which automatically maintains the voltage and current signals in the same phase (homonymous terminal). It provides users with two operational modes: a pre-configured Fully Automatic mode and a customizable Manual Setting mode. The user interface is friendly and easy to operate. All control parameters are digitally adjustable, making configuration intuitive and convenient. The controller supports two working methods: Automatic and Manual operation. It includes essential protection functions against over-voltage and under-voltage conditions. Data integrity is assured with a power-down protection feature that prevents data loss. Furthermore, it features a very low current signal input impedance of ≤0.01Ω for minimal system impact. Regarding its Work Modes, the Automatic Reactive Power Compensation Controller is shipped pre-set in Fully Automatic mode. In this mode, all parameters are preset in the most rational way, allowing the unit to function correctly immediately after wiring, requiring no user intervention. The Manual Setting mode offers precise control over capacitor bank switching, eliminating switching oscillations. This mode is suitable for all working environments, particularly those with light loads and large capacitor capacities.

The technical parameters of this product are: Rated Operational Voltage: AC 380V; Rated Operational Current: AC 0.1～5A; Static Output: AC 220V 3A; Dynamic Output: DC 12V 10mA; Displayed Power Factor Range: Lagging 0.001 - Leading 0.001; Measured Reactive Power: 0-9999 Kvar; Under-voltage Protection Value: AC 300V; Control Method: Automatic Optimization / Cyclic Switching; Sensitivity: 100mA; Protection Class: Enclosure IP30; Display Method: Digital Tube (Nixie Tube). For reliable operation, install this Automatic Reactive Power Compensation Controller under these conditions:

• 1) Altitude not higher than 2500 meters;
• 2) Ambient temperature range -25℃ to +50℃;
• 3) Air humidity not exceeding 50% at 40℃ and 90% at 20℃;
• 4) Surroundings free from corrosive gases, conductive dust, and flammable/explosive media;
• 5) Installation site without severe vibration.

1. The controller's operating voltage and current can be connected to phase BC voltage and phase A current; phase AB voltage and phase C current; phase AC voltage and phase B current.

2. The sampling currents l_a and l_n must be taken from the total load (main cabinet) current line, and must not be taken from the capacitor bank.

3. The voltage at the controller's output terminals 1-12 is the same as that at terminal V(Us).