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.
Filter/Compensation Modules
Filter/compensation modules are integrated functional units designed for reactive power compensation and harmonic mitigation in low-voltage power distribution networks. Each module combines key components such as capacitors, detuned reactors, contactors, fuses, busbars, and terminals into a compact and standardized structure.
Modular Harmonic Filtering and Reactive Power Compensation Units
Product Introduction
Filter/compensation modules are integrated functional units designed for reactive power compensation and harmonic mitigation in low-voltage power distribution networks. Each module combines key components such as capacitors, detuned reactors, contactors, fuses, busbars, and terminals into a compact and standardized structure.
These modules can function as standalone capacitor/filter circuits or be used as extension units to expand existing PFC cabinets. Modularization represents a major advancement in power quality solutions—enabling flexible system design, fast assembly, easy upgrading, and reduced engineering complexity.
Featuring a clean structural layout, high reliability, and comprehensive protection—including over-voltage, under-voltage, over-temperature, and harmonic overload protection—the modules provide an ideal platform for power quality improvement for EPC contractors, panel builders, and end-users.
Key Features
- Detuning factor (reactor ratio): 5.67%, 7%, 12% or 14%
- Rated voltage options: 400 / 450 / 480 / 525V
- High switching durability and long operational lifetime
- Capacitor capacity sectional range: 12.5–50 kvar per unit
- Low noise dry-type reactors
- Short switching cycle with fast dynamic response
- Compact, integrated structure for neat installation
- Ideal for cabinet modularization and flexible expansion
Specifications & Dimensions Selection
| No. | 3-Phase Compensation Capacity | Height (mm) | Width (mm) | Depth (mm) |
|---|---|---|---|---|
| 1 | 25 kvar | 300 | 526 / 726 / 926 | 400 |
| 2 | 25 kvar | 300 | 726 / 926 | 450 |
| 3 | 2×25 kvar | 300 | 526 / 726 / 926 | 400 |
| 4 | 2×25 kvar | 300 | 526 / 726 / 926 | 450 |
| 5 | 50 kvar | 300 | 726 / 926 | 400 |
| 6 | 50 kvar | 300 | 526 / 726 / 926 | 450 |
| 7 | 2×50 kvar | 300 | 526 / 726 / 926 | 400 |
| 8 | 2×50 kvar | 300 | 526 / 726 / 926 | 450 |
| 9 | 100 kvar | 300 | 526 / 726 / 926 | 400 |
| 10 | 100 kvar | 300 | 526 / 726 / 926 | 450 |
Ordering Recommendations
- Modular structure with series connected detuned reactor
- Suitable cabinet width: ≥800mm; each 50 kvar for 1 switching step
- For 525V systems, recommended detuning factor 12.5%
- Max installable capacity per cabinet (standard size)：
▪ 50 kvar modules → ≤250 kvar
▪ 25 kvar modules → ≤225 kvar - Before installation, verify module parameters match selected specifications
- Modules use bottom wiring for easy cabinet integration
- Refer to wiring diagrams for control signal mapping (included below )
Wiring Diagrams
Related Products
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