Intelligent Power Factor Control

The Intelligent Power Factor Control unit, known as the Smart Reactive Power Automatic Compensation Controller, is a high-performance device centered on a high-speed microprocessor. This advanced product system simultaneously samples 3-phase voltage and 3-phase current signals, providing both split-phase and common-phase compensation schemes. Users can modify control parameters as needed; once changed, settings are permanently saved and will not be lost during a power outage. It employs a compound control strategy using fundamental power factor and fundamental reactive power to switch capacitor banks, ensuring stable operation with no switching oscillation, and remains insensitive to interference from voltage and current harmonics. This product solution is suitable for the automatic control of reactive power compensation in power systems below 0.4kV, with an AC frequency range of 45Hz to 65Hz. The technical parameters defining 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; Rated Operational Frequency: 45-65Hz; Displayed Power Factor Range: Lagging 0.001 to 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. For optimal operation, this Intelligent Power Factor Control device requires the following normal working and installation 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) An environment free from corrosive gases, conductive dust, and flammable or explosive media;
• 5) An installation location without severe vibration.

The product's purpose is clear: this product controller is suitable for the automatic regulation of capacitor compensation devices in low-voltage distribution systems, bringing the power factor to a user-preset state. This improves power transformer utilization efficiency, reduces line losses, and enhances the quality of the power supply voltage. When paired with non-contact switches (including dynamic regulators and composite switches), the Intelligent Power Factor Control can meet the requirements for rapid switching to achieve ideal reactive compensation, making it especially suitable for applications combining common-phase and split-phase compensation. Its comprehensive functional features include:

• 1. Utilizing 3-phase fundamental reactive power to calculate switching capacitor capacity, avoiding any form of switching oscillation, and correctly displaying the grid power factor even in the presence of harmonics.
• 2. High-accuracy power factor measurement with a wide display range. 3. Real-time display of total power factor (PF) and fundamental power factor (DPF).
• 4. Real-time separate display of 3-phase voltage, current, active power, reactive power, and apparent power.
• 5. Two working modes: Automatic and Manual operation.
• 6. A user-friendly human-machine interface for easy operation.
• 7. 12 different coding output modes for user selection.
• 8. Up to 5 compensation schemes for user choice (allocation of common and split-phase circuits).
• 9. A maximum of 12 output circuits.
• 10. All control parameters are digitally adjustable, intuitive, and convenient to use.
• 11. Power-down protection ensures data is not lost.
• 12. Includes over-voltage and under-voltage protection functions.
• 13. Current signal input impedance is low, ≤0.01Ω.
• 14. The target power factor adjustment range is wide, from 0.70 lagging to 0.70 leading.