Specification
| Rated Voltage(kV) |
126 |
| Shed No. |
17/16 |
| Creepage Distance(mm) |
2860 |
| Cantilever Failing Load(kN.m) |
35 |
| Main Dimensions(mm ) |
H |
1360 |
| h1 |
135 |
| h2 |
105 |
| D |
430 |
| d |
180 |
| d1 |
345 |
| d2 |
345 |
| n |
12 |
Inner Hydro Test
( Mpa ) |
Withstand
Load of
inner
Pressure |
3.2 |
Withstand
Time
(min) |
5 |
Failing
Load of
Inner
Pressure |
4 |
The table above is just one of our product parameters. If you want more information, please get in touch with info@wishpower.net
What is Circuit Breaker Porcelain Bushing?
Circuit Breaker Porcelain Bushing is an essential insulating part in the High voltage circuit breaker which helps to provide passage for the conductor through an earthed partition. However, it guards against direct contact between the live parts of the circuit breaker and the adjacent structures as well as providing mechanical support of the breaker. This bushing is intended to bear with voltage stress that is inherent in circuit breaker applications besides offering insulating and mechanical protection to other internal parts of the system. Circuit breakers are designed to interrupt three phase four wire high voltage currents to protect complicated electrical grids during fault, and the porcelain bushing is very essential element of the circuit breaker by acting as an insulating material which avoids any electrical leakage or flash affecting the overall performance of circuit breaker in any way. The porcelain used in the bushing is an ideal one since it provides the necessary dielectric strength required for the system to remain properly insulated even when in operation at the maximum revenue point. Further, it aids in preventing the outer environment from hurting the internal components of the circuit breaker, especially in areas of moisture or contamination, which may cause deterioration or faults of healthy internal components. The safety, reliability, and life-cycle costs of high-voltage electrical systems depend on insulating the live conductors from the body of equipment, which includes grounded parts.
Features
- High Dielectric Strength
Circuit breaker bushing used in circuit breakers has high dielectric strength hence providing high insulation to the devices particularly at high voltages to minimize the likelihood of electrical breakdown.
- Thermal Resistance
These bushings are expected to experience changes in temperature due to arc interruption while circuit players are at work and thus control the temperature and prevent thermal stress damage from happening.
- Mechanical Durability
The circuit breaker porcelain bushings possess high mechanical strength to deal with the pressure and different levels of force that are exerted during fault interruption in the circuit breaker.
- Environmental Protection
This is because porcelain bushing has outstanding chemical resistance from conditions such as humidity, dust, and even pollutants that may affect the other kinds of bushing material in the long run.
Benefits
- Excellent Insulation
Porcelain provides superior electrical insulation, ensuring the safe operation of circuit breakers by preventing leakage currents and flashovers, even at high voltages.
- High Mechanical Strength
This breaker bushing offers strong mechanical support, making it capable of withstanding physical stresses such as thermal expansion, pressure changes, and external forces, ensuring reliable performance.
- Durability in Harsh Environments
These bushings are highly resistant to environmental factors like moisture, dirt, and UV radiation, maintaining their performance and integrity in outdoor and polluted conditions.
- Long Service Life
Porcelain is highly resistant to aging and degradation, offering a long lifespan without significant maintenance or performance loss, making it ideal for long-term installations.
- Thermal Stability
Circuit breaker porcelain bushings can handle extreme temperature fluctuations, maintaining their structural and insulating properties even in cases of rapid heating during circuit breaker operations.
How is it installed?
- Preparation
The first step is to prepare the circuit breaker for installation. This includes cleaning the mounting surface, inspecting components for damage, and ensuring that all necessary equipment is ready, such as lifting devices for heavy bushings.
- Mounting the Bushing
The porcelain bushing is carefully aligned and positioned onto the circuit breaker body or the supporting structure. This is typically done using specialized lifting equipment to avoid damage, as porcelain is heavy and fragile. The bushing is then securely bolted into place using flanges or clamps to hold it steady.
- Electrical Connections
After the bushing is mounted, the electrical connections are made. The conductor that passes through the bushing is connected to the internal components of the circuit breaker, while the external end is connected to the live high-voltage network.
- Sealing and Insulation
To ensure proper insulation, gaskets or seals are applied at the mounting points and joints. This prevents moisture or contaminants from entering and ensures that the bushing remains electrically insulated from the grounded parts of the breaker.
- Testing and Grounding
Once the breaker porcelain bushing is installed, the entire setup is tested for electrical insulation and mechanical stability. Grounding connections are checked to ensure the system operates safely under fault conditions, and that the bushing is properly integrated with the circuit breaker.
- Final Inspection and Maintenance
A final inspection is conducted to ensure all components are securely installed, and that no damage has occurred during the process. Routine maintenance procedures are also outlined to ensure the long-term functionality of the bushing.
Certificate
Factory
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