Traditional oil circuit breakers is replaced by vacuum circuit breakers in the medium voltage field,why
Vacuum circuit breakers gradually replace traditional oil circuit breakers in the medium voltage field, mainly based on the following technical advantages and actual needs:
1. Economic efficiency and long life
Lower total cost: Although the initial purchase cost of vacuum circuit breakers may be high, they save maintenance costs and power outage losses in the long term, and have better overall economic efficiency.
Long life: The contact material of the vacuum interrupter (such as copper-chromium alloy) is resistant to arc erosion, and the mechanical life can reach tens of thousands of times, far exceeding that of oil circuit breakers.
2. Adapt to the needs of modern power systems
Frequent operation capability: Suitable for scenarios that require frequent switching, such as distribution network automation and new energy grid connection (such as capacitor banks and motor control).
Miniaturized design: Vacuum circuit breakers are small in size and light in weight, making them easy to install in switch cabinets and saving space.
3. Technology maturity and standardization
Technology development: The manufacturing process of vacuum interrupter (such as ceramic packaging and contact material optimization) is becoming more and more mature, with lower costs and higher reliability.
Industry trends: International standards (such as IEC, IEEE) and national power grid specifications are gradually phasing out oil circuit breakers, pushing vacuum technology to become the mainstream in the medium voltage field.
Supplement: Limitations of oil circuit breakers
Arc extinguishing depends on oil decomposition: the arc decomposes the oil to produce gas (including hydrogen), which may ignite or reduce insulation performance.
Limited breaking capacity: carbonization is easily generated when breaking high currents, requiring frequent maintenance.
Ambient temperature sensitivity: oil viscosity is affected by temperature, and performance is unstable in cold or high temperature areas.
Summary
Vacuum circuit breakers have become the mainstream choice in the medium voltage field with their comprehensive advantages such as safety, environmental protection, high efficiency and low maintenance, especially suitable for the requirements of modern power grids for reliability, automation and miniaturization.
VTZ-40.5K vacuum circuit breaker by Shaanxi West Power Tongzhong Electrical Co., Ltd. is a 40.5kV vacuum circuit breaker from our company's VTZ modular mechanism series, which has been extensively optimized and improved in mechanical transmission, main structure, and secondary circuits. It is a fixed installation of indoor switchgear component for rated voltage 40.5kV, AC 50HZ.
VTZ-40.5K vacuum circuit breaker has many advantages:
Breaker Performance
1) E2-C2-M2
2) Convenient maintenance
The modular mechanism design allows for easy replacement of the closing and opening coils without the need for disassembling other components. This eliminates the need for testing or adjustment after replacement, ensuring users can replace them independently, making subsequent maintenance more convenient.
3)High Conductivity
The optimized insulated cylinder structure and high performance flexible connection embedded pole reduce contact resistance, ensuring reliable power supply.
4)Strong adaptability
This series of switches can be equipped with opening interlocks and main shaft interlocks, and can be designed with interlocks according to user requirements. Special chassis truck can also be designed and modified according to user cabinet needs for convenience.
5)Wide range of use
The product is designed to withstand harsh environments, including temperatures as low as -25°C, and meets the requirements for operation at altitudes of up to 2000 meters.
For more information, please feel free to contact us as per following information:
Email: xdtz04@westpowerelectric.com
Website: https://www.xdtzelectrical.com/
Tel:+86 917 3661109
Mobilephone(whatsapp ): +86 18091765882
