Product Details
Current-limiting reactor
A current-limiting reactor is connected in series with the power system. Its purpose is to reduce the short-circuit current resulting from factory expansion and increased power supply
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Current-limiting reactor
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Details
Current Limiting Reactor (CLR)
Rated Voltage: Up to 500 kV
Core Function
Connected in series with power systems to:
1.Limit short-circuit currents from grid expansions to levels manageable by existing equipment
2.Protect critical assets: Transformers, switchgear, and cables
3.Reduce fault duration: Enables selective coordination of protection relays
4.Minimize voltage sag: Maintains >85% voltage during faults
Operating Conditions
| Parameter | Standard Specification | Customization Options |
| Installation | Indoor/Outdoor | Arctic (-60℃)/Desert (+70℃) |
| Ambient Temp | -40℃ to +50℃ | Extended range: -50℃ to +60℃ |
| Altitude | ≤3000 m | 5000 m (with derating) |
| Max Wind Speed | 45 m/s (162 km/h) | Hurricane-proof: 60 m/s |
| Humidity | ≤90% (non-condensing) | Tropicalized (>95% RH) |
| Seismic | Horizontal: 0.30g Vertical: 0.15g | High-seismic: 0.5g (IEEE 693) |
| Pollution | IEC 60815 Class III | Class IV (heavy industrial) |
Indoor Requirements:
Ventilation: Forced-air (AF) or Natural (AN)
Air Quality:
Dust: ≤0.3 mg/m³ (non-conductive)
Gases: SO₂ ≤0.1 ppm, H₂S ≤0.01 ppm (IEC 60721-3-3)
Technical Parameters：
| Parameter | Standard Range | Precision Options |
| Rated Frequency | 50/60 Hz | 16.7 Hz (railway) |
| System Voltage | 66-500 kV | 550 kV (BIL 2100 kV) |
| Rated Current | 1-6 kA | 10 kA (forced-cooled) |
| Short-Time Current | 40 kA/1s or 25 kA/3s | 63 kA/1s (peak) |
| Reactance Tolerance | ±10% | ±5% precision grade |
| Insulation Type | Epoxy-resin (dry-type) | Oil-immersed (ONAN) |
| Insulation Class | Class F (155°C) | Class H (180°C) |
| Rated Losses | ≤0.4% of rated power | Ultra-low loss: ≤0.25% |
| Avg. Temp Rise | 80K (winding) | — |
| Hot Spot Rise | 95K (winding) | Fiber-optic monitoring |
| Sound Level | ≤75 dB(A) @ 1m | Silenced: ≤65 dB(A) |
| Terminal Orientation | Axial/Radial | Custom busbar angles |
DKNC Custom Engineering:
Voltage Optimization: ±10% tap changers
Modular Design: Stackable units for space constraints
Smart Monitoring: IoT-enabled thermal/current sensors
Retrofit Kits: For legacy switchgear (ANSI/IEEE C37)
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Address: 902-903, Building 1, Yard 15, Xinya Street, Daxing District, Beijing, China
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