Vacuum circuit breaker voltage rating
1. The meaning of the rated voltage of a circuit breaker
The rated voltage refers to the standard limit voltage of the circuit breaker. It is the highest voltage defined by the equipment. In actual use, the vacuum circuit breaker should be able to operate normally within the rated voltage range.
2. Explanation of key terms
1) Rated voltage: refers to the rated working voltage value that the equipment or components can withstand. Its size is usually determined by measuring and determining according to the electrical performance indicators during the development and manufacturing of the equipment.
2) Rated working voltage range: refers to the voltage range in which the equipment can work safely and reliably. Within this voltage range, the electrical performance of the equipment remains stable and can work normally.
3)Peak voltage is the voltage from zero voltage to the highest point, that is, the maximum voltage.
Voltage level range of vacuum circuit breaker
The voltage level of the vacuum circuit breaker can be classified according to the international standard IEC, which is mainly divided into three levels: low voltage, medium voltage and high voltage. In particular, medium voltage grades, such as 10kV, 24kV and 40.5kV vacuum circuit breakers, are the most commonly used in power systems.
Application of medium voltage vacuum circuit breaker
Medium voltage vacuum circuit breaker has become an important protection equipment in medium voltage power system because of its efficient protection ability, low maintenance requirements and environmental protection characteristics. Among them, 10kV vacuum circuit breakers are widely distributed, accounting for as high as 77.6%, mainly used in the power industry. 24kV vacuum circuit breakers are mainly used in plateau areas and specific industries such as electronic semiconductors, accounting for 8.4%. The 40.5kV vacuum circuit breaker is more in the power grid and high-load industry, accounting for 14%.
ZN85-40.5K vacuum circuit breaker produced by Shaanxi West Power Tongzhong Electrical Co., Ltd.It adopts an integrated frame operating mechanism and is suitable for various industrial and mining enterprises, as well as power grid equipment, equipped with corresponding mechanical interlocking, and compatible with fixed cabinets such as XGN2.
Stability and reliability, it adopts the most mature frame-integrated spring operating mechanism, with over 20 years of market usage experience, ensuring safety, reliability, and high market recognition.Excellent insulation performance. The main conductive circuit adopts APG high-strength epoxy resin composite insulated cylinder, which exceeds the IEC standard in terms of insulation performance.
