Zhejiang Hongyan Electric Co., Ltd. 
ENGINEERED SOLUTION
Steel & Metallurgy
Power factor correction, harmonic mitigation and voltage support for electric arc furnaces, rolling mills, cranes and high-load metallurgical production lines.
Smart Power Capacitors
This all-in-one structure replaces multiple traditional components such as reactive power controller, fuses/MCBs, thyristor switches/contactors, thermal relays, indicator lamps, and stand-alone power capacitors.
This all-in-one structure replaces multiple traditional components such as reactive power controller, fuses/MCBs, thyristor switches/contactors, thermal relays, indicator lamps, and stand-alone power capacitors.
Each unit operates as an independent smart compensation module and can be deployed individually or networked into a complete compensation system. It supports both three-phase compensation and mixed three-phase + split-phase compensation, making it adaptable to different load conditions.
Designed with advanced sensing, electronics, IoT networking, and power electrical technologies, smart capacitors provide a compact, standardized, intelligent, and highly reliable solution that significantly improves compensation efficiency and reduces installation and operational complexity.
They redefine the traditional structure of low-voltage reactive power compensation equipment, greatly enhancing system reliability, extending service life, reducing production and maintenance costs, and enabling future-oriented power quality management.
Product Introduction
Smart capacitor modules integrate:
- Intelligent measurement and control unit
- Zero-cross switching technology
- Intelligent protection circuits
- Low-voltage self-healing power capacitors (three-phase or dual-single-phase)
Replacing multiple discrete components such as controllers, fuses/MCBs, thyristor/contactor switches, thermal relays, etc., each unit forms a fully independent and intelligent PFC module.
Supports:
✔ Single unit operation
✔ Multi-unit networking
✔ Three-phase or mixed phase compensation
✔ Single unit operation
✔ Multi-unit networking
✔ Three-phase or mixed phase compensation
With advanced electronic sensing, network communication, and modular electrical design, the device provides:
- Higher reliability and longer service life
- Simplified installation and maintenance
- Lower overall project cost
- Full digital and intelligent management
This new generation of reactive compensation solution modernizes low-voltage power factor improvement and power quality control.
🔹 Model Dimensions
| Model | Height (mm) |
|---|---|
| HYZN/450-20.20 | 310 |
| HYZN/450-20.10 | 310 |
| HYZN/450-10.10 | 270 |
| HYZN/450-10.5 | 225 |
| HYZN/450-5.5 | 225 |
| HYZN/450-5.2.5 | 225 |
| HYFB/250-20 | 270 |
| HYFB/250-10 | 225 |
| HYFB/250-5 | 225 |
Width and depth are consistent across models; only height varies.
🔹 Display Interface (LCD HMI)
Supports Chinese & English switching
| Display Item | Description |
|---|---|
| Voltage (A/B/C) | Real-time measured phase voltage |
| Power factor | Compensation performance indicator |
| Reactive power | Measured kvar values |
| Secondary current | CT based measurement |
| Communication address | Device networking identifier |
| Harmonic voltage | Total harmonic distortion (V) |
Protection alarms (with text display):
Over-voltage / Under-voltage / Over-temperature
Over-voltage / Under-voltage / Over-temperature
🔹 Installation Requirements
- Indoor installation, vertical mounting in PFC cabinet
- Clearance ≥30mm from cabinet top, ≥200mm bottom for ventilation
- Provide wiring and heat dissipation clearance
- Avoid corrosive gas and humidity >90%
- Ensure full surface contact when wall-mounting
🔹 Mounting Method
- Install upright inside the cabinet with display facing front
- Suitable for GCK, GCS, MNS low-voltage switchgear
- Cable access from top or bottom available
💡 Key Benefits Summary
| Benefit | Description |
|---|---|
| Plug-and-play | No additional controller or switching device required |
| Integrated protection | Thermal + harmonic + over/under-voltage |
| Modular expansion | Add modules anytime for higher kvar |
| Multi-compensation mode | Three-phase / split-phase hybrid |
| Long capacitor life | Self-healing + zero-cross switching |
| Smart networking | Supports coordinated multi-unit control |
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