Shunt Reactor Main technical data
Rated Performance
-
- Voltage: ≤35kV (standard levels: 10kV, 20kV, 35kV)
- Capacity: 1-50MVar (customizable per grid demand)
- Insulation: Complies with IEC 60076-3 & ANSI C57.21 for power frequency/lightning impulse withstand
Core Features
-
- Losses: No-load loss ≤0.3% rated capacity; load loss ≤0.5% (IEC 60076-8)
- Noise: ≤65dB (ANSI C57.12.90)
- Overload: 110% continuous current operation (IEC 60076-7)
Design Specifications
-
- Core: Grain-oriented silicon steel with fully staggered joints to reduce losses
- Winding: Epoxy-cast or oil-immersed type for enhanced mechanical/thermal performance
- Cooling: ONAN/ONAF modes for oil-immersed units
Protection & Control
-
- Overvoltage: Requires coordination with ZnO arresters (e.g., HY5WZ type)
- Switching: Phase-controlled breakers recommended to suppress transient overvoltage
Shunt reactor detailed Introduction
Shunt reactors play a crucial role in power systems, especially in the 35KV and below voltage levels. They are used to compensate for the capacitive reactive power generated by long - distance transmission lines, cables, and other capacitive elements in the network. By doing so, shunt reactors help to maintain the voltage stability, improve the power factor, and enhance the overall efficiency and reliability of the power system.
2. Technical Standards
Our 35KV and below shunt reactors are designed and manufactured in strict accordance with both IEC (International Electrotechnical Commission) and ANSI (American National Standards Institute) standards. These international standards ensure high - quality performance, safety, and compatibility with various power systems around the world.
3. Technical Parameters
3.1 Rated Voltage
The rated voltage of our shunt reactors ranges from a few kilovolts up to 35KV. This wide range allows for flexibility in different power system applications, whether it is a small - scale distribution network or a medium - sized industrial power system. For example, in a typical urban distribution network, a 10KV shunt reactor can be used to balance the reactive power of the underground cables.
3.2 Rated Reactive Power
The rated reactive power of the shunt reactors can vary from several hundred kilovars (kvar) to several megavars (Mvar). The selection of the appropriate rated reactive power depends on the specific requirements of the power system, such as the length of the transmission line, the load characteristics, and the degree of capacitive reactive power compensation needed. For instance, in a long - distance 35KV overhead line, a shunt reactor with a rated reactive power of 5Mvar might be required to offset the large amount of capacitive reactive power generated by the line.
3.3 Impedance
The impedance of the shunt reactor is an important parameter that affects its performance. It is designed to have a specific impedance value within a certain tolerance range according to the IEC and ANSI standards. The impedance determines the amount of current that the shunt reactor will draw at a given voltage, and it also influences the way the reactor interacts with other components in the power system.
3.4 Losses
There are two main types of losses in shunt reactors: no - load losses and load losses. No - load losses are mainly caused by the magnetic hysteresis and eddy currents in the core, while load losses are due to the resistance of the winding. Our shunt reactors are designed to have low losses, which not only improves the energy efficiency but also reduces the operating costs. The loss values are carefully controlled and tested to meet the requirements of the IEC and ANSI standards.
3.5 Insulation Level
The insulation level of the shunt reactor is crucial for its safe and reliable operation. It is designed to withstand the maximum operating voltage, as well as transient over - voltages such as lightning surges and switching surges. The insulation materials used in our shunt reactors are of high quality and are selected based on the IEC and ANSI insulation standards to ensure long - term durability and safety.
4. Construction and Design
The shunt reactor consists of a core, windings, insulation, and a tank. The core is usually made of high - quality silicon steel laminations to reduce the magnetic losses. The windings are wound with copper or aluminum conductors, depending on the specific design requirements. The insulation system provides electrical isolation between the windings and the core, as well as protection against environmental factors. The tank is used to house the core and windings and is filled with insulating oil to improve the cooling and insulation performance.
5. Advantages of Our Shunt Reactors
- High - Quality Performance: Thanks to the strict adherence to IEC and ANSI standards, our shunt reactors offer excellent performance in terms of reactive power compensation, voltage stability, and energy efficiency.
- Reliability: The robust construction and high - quality materials ensure long - term reliable operation, even in harsh environmental conditions.
- Flexibility: With a wide range of rated voltages and reactive powers available, our shunt reactors can be easily customized to meet the specific needs of different power systems.
In conclusion, our 35KV and below shunt reactors are essential components for power systems, providing reliable and efficient reactive power compensation. Their design and performance are in full compliance with the IEC and ANSI standards, making them a trusted choice for power system operators worldwide. Shunt reactors, as the key elements in reactive power management, will continue to play a vital role in the development and stability of modern power grids.
BKS series oil type Shunt reactor is used to compensate the capacitive charging current of the grid, limit the rise of the system power frequency voltage and the operating overvoltage , so that reducing the insulation level of the system and ensure the reliable operation of the grid.With the continuous expansion of urban scale and the transformation of urban power grid, overhead line transmission is gradually replaced by underground cable, which makes the capacitive charging current of transmission network increase sharply. In order to reduce the rise of power frequency voltage and insulation level of the system, ensure the safe and reliable operation of the system and the power supply quality of the city's power grid,the Shunt Reactor is widely used in urban distribution network.
Structural features:
1.The iron core is made of high-quality silicon steel sheet, wrapped with high-strength glass ribbon, thermally fixed, and fixed with special iron core curing paint, which can effectively reduce the vibration between iron core cakes and reduce the noise.
2.The coil is made of high quality paper wrapped copper wire. In order to ensure the safety and reliability of insulation structure, dot adhesive paper is used to prevent coil winding displacement.
3.The reactor adopts ripple oil tank with fully sealed structure. The thermal expansion and cold contraction of transformer oil are adjusted by the elasticity of ripple plate to ensure internal isolation from air, prolong service life and reduce maintenance.
Structural features:
1.The iron core is made of high-quality silicon steel sheet, wrapped with high-strength glass ribbon, thermally fixed, and fixed with special iron core curing paint, which can effectively reduce the vibration between iron core cakes and reduce the noise.
2.The coil is made of high quality paper wrapped copper wire. In order to ensure the safety and reliability of insulation structure, dot adhesive paper is used to prevent coil winding displacement.
3.The reactor adopts ripple oil tank with fully sealed structure. The thermal expansion and cold contraction of transformer oil are adjusted by the elasticity of ripple plate to ensure internal isolation from air, prolong service life and reduce maintenance.
Environment:
1. The altitude shall not exceed 2000m;
2. The operating environment temperature is - 25 ºC to + 45 ºC, and the relative humidity is not more than 90%;
3. There is no harmful gas and inflammable and explosive materials around;The surrounding environment should be well ventilated.
| Model |
Capacity(Kvar) |
Voltage(kV) |
Current(A) |
Reactance(Ω) |
Oil Weight (kg) |
Total Weight(kg) |
SIZE mm(L*W*H) |
| BKS-72/10 |
72 |
10.5 |
3.96 |
1530.9 |
60 |
320 |
710×510×940 |
| BKS-114/10 |
114 |
10.5 |
6.27 |
966.85 |
97 |
420 |
780×610×1110 |
| BKS-144/10 |
144 |
10.5 |
7.92 |
765.4 |
120 |
660 |
890×710×1210 |
| BKS-300/10 |
300 |
10.5 |
16.5 |
367.4 |
140 |
790 |
1220×750×1310 |
| BKS-600/10 |
600 |
10.5 |
33 |
183.8 |
560 |
2250 |
1430×910×1640 |
| BKS-1200/10 |
1200 |
10.5 |
65.98 |
91.88 |
710 |
2690 |
1710×1010×1670 |
| BKS-3000/10 |
3000 |
10.5 |
164.96 |
36.75 |
1300 |
4200 |
2100×1710×1800 |
| BKS-8000/10 |
8000 |
10.5 |
439.9 |
13.78 |
3200 |
8150 |
2700×2230×2700 |
| BKS-10000/10 |
10000 |
10.5 |
549.86 |
11.02 |
4200 |
13200 |
3000×2400×3100 |
| BKS-5000/35 |
5000 |
38.5 |
74.98 |
296.45 |
3800 |
11500 |
2700×2300×3300 |
| BKS-8000/35 |
8000 |
38.5 |
119.97 |
185.28 |
4500 |
15100 |
3100×2400×3500 |
| BKS-10000/35 |
10000 |
38.5 |
149.96 |
148.23 |
4900 |
17100 |
3400×2900×3500 |
| BKS-20000/35 |
20000 |
38.5 |
299.92 |
74.11 |
7850 |
27500 |
4100×3100×4200 |
Shanghai Changji Electric Co., Ltd. is a professional enterprise specializing in the production of various reactors, power transformers, dry-type transformers, amorphous alloy transformers, special transformers, and box-type substations.
For years, the company has adhered to a customer-first philosophy, earning trust and support through a strong commitment to product quality. By continuously improving quality management and pursuing excellence, Zhejiang Changji Electric Co., Ltd. Strives to secure its market position. With full enthusiasm, sincere cooperation, and a win-win business approach, we warmly welcome domestic and international customers to visit, inquire, and discuss potential collaborations!
Equipped with modern production facilities, advanced manufacturing processes, and comprehensive testing equipment, the company ensures the production of high-performance products featuring innovative designs, low losses, low temperature rise, low noise, high impact resistance, and strong short-circuit withstand capability.
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