HJ-PFC Series Automatic Capacitor Bank
High ROI / Smart Switching / Harmonic-Resistant
The HJ-PFC Series Automatic Capacitor Bank is a highly reliable, microprocessor-controlled reactive power compensation system. Designed to automatically track load fluctuations and precisely switch capacitor steps, it dramatically improves your facility’s power factor, eliminates utility penalty charges, reduces line losses, and effectively frees up transformer capacity for future expansion.
Ideal for Power Optimization & Energy Savings:
- ✓ General Manufacturing & Industrial Plants
- ✓ Commercial Complexes, Malls & Office Buildings
- ✓ Water Treatment Plants & Heavy Pumping Stations
- ✓ Utility Substations & Distribution Networks
1. Intelligent Microprocessor APFC Control
At the heart of the system is an advanced Automatic Power Factor Controller (APFC). It continuously monitors real-time active and reactive power, voltage, and current. Utilizing smart switching algorithms, it eliminates hunting (over-compensation) and ensures the optimal number of capacitor steps are engaged to maintain a target PF close to unity (0.99).
2. Detuned Reactors for Harmonic Protection
Modern electrical networks are often polluted with non-linear loads. To prevent dangerous harmonic resonance and protect the capacitors from premature failure, the HJ-PFC can be factory-fitted with highly robust detuned series reactors (typically 7% or 14%). This effectively blocks harmful harmonics while providing essential reactive power.
3. Flexible Symmetric & Asymmetric Compensation
To address complex and unbalanced loads, our capacitor banks support versatile switching configurations. The system seamlessly integrates both 3-phase simultaneous compensation (Delta connection) for balanced loads and single-phase independent compensation (Wye/Star connection) for heavily unbalanced lighting or commercial circuits.
4. Self-Healing Capacitors & High Durability
Safety and longevity are guaranteed. We utilize premium, low-loss, self-healing metallized film capacitors with built-in over-pressure tear-off fuses. Combined with specialized capacitor-duty contactors (or zero-crossing thyristor switches for ultra-fast dynamic loads), the system delivers an extended operational lifespan of up to 100,000 hours with minimal maintenance.
Global Factory Acceptance & Turnkey Support
Every HJ-PFC unit undergoes rigorous routine testing, including insulation resistance, switching sequence validation, and full functional checks in accordance with IEC 61439 and IEC 61921 standards. We provide fully assembled panels ready for immediate parallel connection to your main distribution board.
Technical Specifications
(Note: Parameters cover standard configurations based on the GGJ series. Total compensation capacity and step resolution are fully customizable based on your facility's load profile.)
| Electrical Parameters | |
| Compliance Standards | IEC 61439-1 / IEC 61921 / GB/T 15576 |
|---|---|
| Rated Working Voltage | Up to 450V AC (Custom 690V available) |
| Rated Grid Frequency | 50 Hz / 60 Hz |
| Total Compensation Capacity | Typically 150kVAr to 1000kVAr per cabinet (Expandable via parallel cabinets) |
| Switching Elements | Capacitor-Duty Contactors / Thyristors (for dynamic loads) |
| Switching Response Time | ≤ 20ms (Thyristor) / 1~60s adjustable (Contactor) |
| Inrush Current Limitation | < 25 In |
| Detuned Reactor Factor | 7% (for 5th/7th harmonics) or 14% (for 3rd harmonics) |
| Data Communication | RS-485 (Modbus) / GPRS module optional |
| Enclosure Protection Degree | Standard IP30 (Customized IP40/IP54 available) |
Normal Operating Environment
- Ambient Temperature: -5°C to +40°C.
- Altitude: ≤ 2000m.
- Relative Humidity: ≤ 90% at +20°C.
- Installation Site: Indoor areas strictly free from severe vibration, explosive dust, or severe chemical corrosion.
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