Automatic Reactive Power Compensation

Automatic Reactive Power Compensation is efficiently achieved through an intelligent controller featuring a high-speed, high-performance microprocessor at its core. This advanced unit for product simultaneously samples 3-phase voltage and 3-phase current, offering 6 distinct split-phase + common-phase compensation schemes and 12 switching coding plans. Users can freely modify control parameters, which are then permanently saved and immune to loss during power failures. The controller employs a compound strategy using fundamental power factor and fundamental reactive power to control capacitor bank switching. This results in stable, oscillation-free performance for product that remains unaffected by voltage or current harmonics. It is suitable for systems below 0.4KV with an AC frequency of 45Hz-65Hz. The technical parameters enabling this product are: Rated Operational Voltage: AC380V; Rated Operational Current: AC 0.1～5A; Static Output: AC 220V 3A; Dynamic Output: DC 12V 10mA; Rated Operational Frequency: 45-65Hz; Displayed Power Factor: Lagging 0.001 - Leading 0.001; Measured Reactive Power: 0-9999 Kvar; Measured Active Power: 0-9999 KW; Measured Apparent Power: 0-9999 KVA; Under-voltage Protection Value: AC 170V; Sensitivity: 100mA; Display Method: Digital Tube. To guarantee reliable Automatic Reactive Power Compensation, the controller must be installed under these conditions:

• 1) Altitude ≤2500 meters;
• 2) Ambient temperature -25℃ to +50℃;
• 3) Air humidity ≤50% at 40℃, ≤90% at 20℃;
• 4) Environment free of corrosive gases, conductive dust, and flammable/explosive media;
• 5) Location without severe vibration.

The product's role in product is to regulate capacitor compensation devices in low-voltage distribution systems automatically. It adjusts the power factor to a user-preset target, thereby boosting transformer efficiency, cutting line losses, and improving voltage quality. When integrated with non-contact switches (like dynamic regulators and composite switches), this controller for Automatic Reactive Power Compensation meets the demands of fast switching for ideal compensation, proving particularly effective in combined common-phase and split-phase applications. Its functional features support effective product:

• 1. It uses the sum of 3-phase fundamental reactive power for capacity calculation, avoiding switching oscillations and displaying correct power factor amid harmonics.
• 2. High-precision power factor measurement with a wide display range.
• 3. Real-time display of both total (PF) and fundamental (DPF) power factor.
• 4. Separate real-time display of 3-phase voltage, current, active, reactive, and apparent power.
• 5. Both Automatic and Manual operating modes.
• 6. A user-friendly interface.
• 7. 12 selectable coding output modes.
• 8. Up to 6 compensation schemes (for common/split-phase allocation).
• 9. Control of up to 16 output circuits.
• 10. Fully digital, intuitive parameter adjustment.
• 11. Power-down data protection.
• 12. Over-voltage and under-voltage protection.
• 13. Low current input impedance (≤0.01Ω).
• 14. Wide target power factor adjustment (0.70 lagging to 0.70 leading).