High Voltage Vacuum Circuit Breaker Intelligent Boundary Vacuum Load Switch IEC62271-10 For Industrial Distribution
Product Description:
The ZW8-12 outdoor vacuum circuit breaker is designed to comply with international standards and is manufactured using advanced technologies. It has a rated voltage of 12kV, a rated current of up to 630A, and a short-circuit breaking current of up to 20kA.
The circuit breaker is composed of several key components, including the vacuum interrupter, operating mechanism, and control system. The vacuum interrupter is the heart of the circuit breaker and is responsible for interrupting the electrical current. It is designed to operate in a vacuum, which helps to prevent arcing and ensures reliable operation.
The operating mechanism is responsible for opening and closing the circuit breaker and can be operated manually or electrically. The control system monitors the circuit breaker and provides feedback to the operator, allowing them to monitor the status of the breaker and detect any faults.
The ZW8-12 outdoor vacuum circuit breaker is designed to be highly reliable and requires minimal maintenance. It has a long service life and is capable of withstanding harsh outdoor environments, making it suitable for use in a wide range of applications.
Advantages:
1.It is equipped with CT23 type spring energy-stored operating mechanism. Energy-stored, opening and closing can be achieved by motor or by manual.
2.ZW8-12G consists of ZW8-12 breaker and isolator, called combined breaker, can be used as sectionalizer.
3.The structure of breaker is of three-phase assembled in a tank, three-phase vacuum arc-extinguishing chamber enclosed in metal tank, insulation material between phases and phase to each made of SMC.
4.reliable performances, and high insulating strength.
Structure:
1.Mold-based One-time Stretching Forming Technology: The upper cover of the enclosure is manufactured using advanced one-time stretching forming technology, which ensures a high level of mechanical strength, an IP4X protection rating, and an aesthetically pleasing appearance. This technology also facilitates easy installation. Additionally, the enclosure is resistant to rust and corrosion. Users have the option to choose between stainless steel or high-quality steel plate spray treatment.
2.Disconnecting Switch (Optional): The ZW32-12 vacuum circuit breaker offers an optional disconnecting switch feature. This switch is specifically designed based on the ZW8 switch body unit. It serves as a convenient and clearly visible disconnect point during distribution line maintenance. To prevent misoperation, a mechanical interlocking device is incorporated between the disconnecting switch and the circuit breaker. This ensures enhanced safety and minimizes the risk of accidental operations.
Application:
1.Distribution Systems: The ZW8-12 circuit breaker plays a crucial role in controlling and protecting distribution systems in 10kV urban and rural power grids. It is responsible for switching on or off load currents, ensuring reliable power distribution to consumers.
2.Power Substations: The circuit breaker is frequently employed in power substations where high-voltage transmission lines are connected to distribution networks. It helps in the isolation and protection of equipment, allowing for safe and efficient operation of the substation.
3.Industrial Power Systems: Industries with high-power requirements, such as manufacturing plants, mining operations, and large-scale infrastructure projects, often utilize the ZW8-12 circuit breaker to control and protect their high-voltage power systems. It helps in managing load currents and safeguarding the equipment from short-circuit fault currents.
4.Renewable Energy Systems: With the increasing adoption of renewable energy sources like wind and solar power, the ZW8-12 circuit breaker finds application in high-voltage switchgear systems associated with renewable energy generation. It aids in the efficient integration of renewable energy into the grid and ensures the safe operation of the power generation facilities.
5.Utility Networks: Electric utility companies rely on the ZW8-12 circuit breaker to manage and protect their high-voltage transmission and distribution networks. It contributes to the overall reliability and stability of the utility grid by effectively controlling load currents and interrupting faults.
Condition:
1.Temperature: The circuit breaker is designed to operate within specified temperature ranges. It can typically withstand ambient temperatures ranging from -40°C to +40°C. This temperature range covers both extreme cold and hot climates, ensuring optimal performance in various regions.
2.Humidity: The ZW8-12 circuit breaker is constructed to handle high levels of humidity. It is designed to operate reliably in environments with relative humidity up to 95% at temperatures up to 40°C. This allows the circuit breaker to function effectively in areas with high humidity, such as coastal regions or tropical climates.
3.Altitude: The circuit breaker is suitable for operation at high altitudes. It is designed to function reliably at altitudes of up to 2,000 meters above sea level. This makes it suitable for deployment in mountainous regions or areas with elevated terrains.
4.Pollution: The ZW8-12 circuit breaker is equipped with anti-pollution features to withstand environmental pollutants. Its internal insulation, including air and epoxy resin composite insulation, helps protect the circuit breaker from pollution effects. This makes it suitable for installation in areas with high levels of pollution, such as industrial zones or urban environments.
5.UV Resistance: The circuit breaker's external materials and coatings are typically resistant to ultraviolet (UV) radiation. This ensures that the circuit breaker can withstand prolonged exposure to sunlight without degradation or performance issues.
Technical Parameter:
erial No. | Parameter | Unit | Data | ||||||||
1 | Rated voltage | kV | 12 | ||||||||
2 | Rated insulation level | 1min Industrial frequency withstanding voltage | Dry Test | 42 | |||||||
Wet Test | 34 | ||||||||||
Lightning surge withstand voltage (Peak) | 75 | ||||||||||
3 | Rated Current | A | 630 | ||||||||
4 | Rated short-circuit breaking current | kA | 20 | ||||||||
5 | Rated short-circuit breaking current times | time | 30 | ||||||||
6 | Rated short-circuit switching current (peak) | kA | 50 | ||||||||
7 | Rated peak withstanding current | 50 | |||||||||
8 | Rated short time withstand current | 20 | |||||||||
9 | Rated short-circuit duration | S | 4 | ||||||||
10 | Breaking time (Separate excitation decoupling) |
Max. operating voltage | ms | 15-50 | |||||||
Rated operating voltage | 30-60 | ||||||||||
Min. operating voltage | |||||||||||
11 | Closing time | 25-50 | |||||||||
12 | Full disconnection time | ≤100 | |||||||||
13 | Arc burning time | ≤20 | |||||||||
14 | Mechanical lifetime | time | 10000 | ||||||||
15 | Closing function | J | 70 | ||||||||
16 | Rated input power of energy storage motor | W | <250 | ||||||||
17 | Rated operating voltage/ rated auxiliary circuit voltage | V | DC220 | ||||||||
AC220 | |||||||||||
18 | Energy storage time at rated voltage | S | <10 | ||||||||
19 | Overcurrent decoupler | Rated Current | A | 5 | |||||||
Accuracy of decoupling current | % | ±10 |