What Is High Voltage Start Shunt Electrical Reactor？
A High Voltage Start Shunt Electrical Reactor (QKSG/QKSC series) is a dry-core reactor designed to limit inrush current when starting high-voltage motors in 6kV and 10kV systems. It utilizes premium imported silicon steel laminations with uniformly segmented columns and multiple epoxy-insulated air gaps, bonded by high-temperature structural adhesive to maintain gap stability during operation. The encapsulated coil windings are vacuum-impregnated with high-temperature insulating varnish, delivering exceptional dielectric properties, high mechanical integrity, and resistance to cracking under motor starting inrush currents and thermal shocks.
Working Conditions of the High Voltage Start Shunt Electrical Reactor
- Altitude — Less than 1000m
- Working Temperature — -25°C to +45°C
- Mounting Environment — Free from fire hazards, explosion risks, flooding, strong chemical corrosion, and similar dangers
- Cooling Interval — After each start, the equipment must cool for 6 hours before restarting
Paramètres du produit
| Type | Capacité de démarrage | Tension nominale | Dimension L x L x H |
Puissance du moteur entraîné |
| QKSG-220 | 393 | 6kV,10kV | 760x400x835 | 220 |
| QKSG-250 | 445 | 760x400x835 | 250 | |
| QKSG-280 | 493 | 760x400x835 | 280 | |
| QKSG-315 | 553 | 805x450x875 | 315 | |
| QKSG-355 | 620 | 805x450x875 | 355 | |
| QKSG-400 | 700 | 805x450x875 | 400 | |
| QKSG-450 | 787 | 865x450x920 | 450 | |
| QKSG-500 | 854 | 865x450x920 | 500 | |
| QKSG-560 | 963 | 865x450x920 | 560 | |
| QKSG-630 | 1081 | 865x450x920 | 630 | |
| QKSG-710 | 1215 | 865x450x920 | 710 | |
| QKSG-800 | 1366 | 895x450x960 | 800 | |
| QKSG-900 | 1538 | 895x450x960 | 900 | |
| QKSG-1000 | 1844 | 895x450x960 | 1000 | |
| QKSG-1120 | 2040 | 955x450x1015 | 1120 | |
| QKSG-1250 | 2273 | 955x450x1015 | 1250 | |
| QKSG-1400 | 2543 | 955x450x1015 | 1400 |
Remarque : D'autres modèles aux spécifications particulières sont fournis en fonction des besoins de l'utilisateur.
Schéma de câblage
Main Technical Data of the High Voltage Start Shunt Electrical Reactor
| Objet | Spécifications |
|---|---|
| Tension nominale | 6 kV / 10 kV |
| Insulation / Temperature Class | F grade (155°C) |
| Noise Level | ≤ 65 dB (not exceeding national standard) |
| Loss | Lower than oil-immersed reactors |
| Structure | Dry-core, compact, lightweight, small footprint, simple structure, easy installation |
Why Choose ZHIMING's High Voltage Start Shunt Electrical Reactor?
Premium Silicon Steel Core with Stable Epoxy Air Gaps
The High Voltage Start Shunt Electrical Reactor core uses imported silicon steel laminations with uniformly segmented columns and multiple epoxy-insulated air gaps, bonded by high-temperature structural adhesive. This construction maintains gap stability during operation while reducing operational noise and enhancing corrosion resistance for long-term reliability under repeated starts.
Dry-Core Design: Compact, Lightweight & Low Loss
The dry-core start reactor is smaller and lighter than traditional oil-immersed and air-core reactors, offering a simple structure, small footprint, and easy installation. Its loss is lower than that of oil-immersed reactors, reducing energy waste during motor starting and lowering total life-cycle operating cost.
Class F Thermal Rating (155°C) for Demanding Starts
Temperature resistance reaches F grade (155°C), allowing the reactor to withstand the thermal stress of repeated high-voltage motor starts. Combined with encapsulated winding technology, it delivers high mechanical integrity and resistance to cracking under inrush currents and thermal shocks, ensuring dependable performance in heavy industrial duty.
Low-Noise Encapsulated Winding Construction
Coils employ encapsulated winding technology with primary insulation vacuum-impregnated with high-temperature insulating varnish. This process yields exceptional dielectric properties and noise not exceeding the national standard (65 dB), making the reactor suitable for noise-sensitive installations while ensuring superior insulation performance.
FAQ
What is a High Voltage Start Shunt Electrical Reactor used for?
The High Voltage Start Shunt Electrical Reactor limits inrush current when starting high-voltage motors in 6kV and 10kV systems. By connecting in series with the motor during start-up, it suppresses the starting current surge, protecting the motor and upstream switchgear from excessive current stress.
What is the difference between a dry-core reactor and an oil-immersed reactor?
The QKSG/QKSC dry-core starter reactor is smaller and lighter than traditional oil-immersed and air-core reactors, with a simpler structure, smaller footprint, and easier installation. It also features lower loss than oil-immersed reactors and eliminates oil handling and leakage concerns, making it safer and more environmentally friendly.
What is the temperature resistance level of the High Voltage Start Shunt Electrical Reactor?
The reactor’s temperature resistance level reaches F grade (155°C). This thermal rating, combined with encapsulated winding and vacuum-impregnated high-temperature insulating varnish, allows it to withstand the heat generated by repeated motor starting cycles without insulation degradation.
What motor power range does the QKSG series support?
The QKSG series covers driven motor power from 220 kW to 1400 kW, with 17 standard models (QKSG-220 through QKSG-1400). Each model corresponds to a specific start capacity and physical dimension, allowing engineers to match the reactor precisely to the motor’s starting requirements.
Can the High Voltage Start Shunt Electrical Reactor be customized for special applications?
Yes. While the standard range covers 220–1400 kW motors at 6kV and 10kV, other special specification models are supplied according to user requirements. Custom start capacities, non-standard voltages, and special environmental adaptations can be provided on request.
