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.
Series Reactors (Tuning Reactors)
With the increasing number of harmonic-generating loads in modern industrial and commercial power systems, harmonic distortion has become a significant threat to grid stability and equipment performance. Harmonic resonance and voltage waveform distortion may lead to overheating, malfunction, or even severe failure of electrical equipment.
Series Reactors (Detuned/Tuning Reactors) — CKS-G / CKS-S Series
Product Introduction
With the increasing number of harmonic-generating loads in modern industrial and commercial power systems, harmonic distortion has become a significant threat to grid stability and equipment performance. Harmonic resonance and voltage waveform distortion may lead to overheating, malfunction, or even severe failure of electrical equipment.
A series tuning reactor installed with a capacitor bank forms a harmonic suppression circuit. It shifts the resonant frequency below the lowest harmonic order in the system.
Under normal power frequency, the system remains capacitive to improve power factor, while becoming inductive at harmonic frequencies to prevent resonance and harmonic amplification.
Under normal power frequency, the system remains capacitive to improve power factor, while becoming inductive at harmonic frequencies to prevent resonance and harmonic amplification.
When properly tuned (e.g. targeting the 5th harmonic), the capacitor-reactor branch can absorb approx. 30%–50% of harmonic currents, improving power quality and ensuring reliable operation of compensation equipment and the entire power network.
Model Code Description
Example: CKSG-□-□/□-□-□
| Code | Description |
|---|---|
| CKS | Reactor |
| G / S | G: Dry-type air-cooled / S: Epoxy cast |
| □ | Rated capacity (kvar) |
| □ | System rated voltage (kV) |
| □ | Detuning factor % / Voltage drop % |
| □ | Single-phase (D) / Three-phase (S) |
| – | Series connection |
Key Features
- Low-loss silicon steel core with high linearity and strong anti-saturation performance
- Excellent thermal dissipation and insulation performance for long service life
- Low noise and low electromagnetic radiation
- High harmonic withstand capability
- Temperature protection embedded within winding (125°C) to avoid overheating
- Natural air cooling for reliable and maintenance-friendly operation
Technical Specifications
| Item | Specification |
|---|---|
| Rated voltage | 230V – 690V |
| Rated frequency | 50Hz |
| Dielectric test | 3kV / 60s |
| Cooling method | Natural air cooling |
| Ambient temperature | -10°C ~ +40°C |
| Protection class | IP00 (indoor installation) |
| Inductance tolerance | 0~+5% |
| Altitude | ≤2000m |
| Standards | EN 60076-6, EN 61558-2-20 |
| Insulation class | F / H |
| Phase type | Single-phase or three-phase |
| Max humidity | 95% |
| Detuning rate options | 5.67%, 6%, 7%, 14% |
| Noise level | <65dB |
| Linear current | 1.35 In continuous |
| Termination | Copper terminals / copper busbar |
Customization based on customer requirements is available.
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