Selecting a vacuum circuit breaker requires comprehensive consideration of technical parameters, application scenarios, and standard requirements. Specific methods are as follows:
Core Selection Principles
Voltage Level Matching: Prioritize 10kV vacuum circuit breakers, while also considering operation and maintenance costs, fire safety, and miniaturization requirements.
Structure Type Selection: Prioritize integrated structures to reduce failure rates and maintenance costs by avoiding split structures.
Operating Mechanism Compatibility: Select the operating mechanism based on the cabinet type: Indoor fixed 10kV switchgear often uses the ZN28 type (spring-operated), while withdrawable types (such as the KYN type) can choose the VS1 type (integrated spring operation).
Key Technical Parameters
Short-Circuit Capacity: The circuit breaker must meet the requirements for short-circuit current thermal effect and mechanical stability.
Standards and Performance Requirements:
Complies with national standards. Must meet the technical conditions of DL/T402-2007 (high-voltage circuit breakers) and DL/T403-2000 (12kV-40.5kV vacuum circuit breakers).
Other Precautions:
Avoid manual operation: Unless there are special requirements, electric operating mechanisms should be preferred to improve efficiency.
Techno-economic Comparison: Selection should be based on a comprehensive consideration of construction difficulty, maintenance costs, and performance indicators.
Through the above methods, the vacuum circuit breaker can be ensured to meet the practical application requirements in terms of safety, reliability, and economy.
VTZ-12 vacuum circuit breaker
VTZ-12 vacuum circuit breaker (special model of Tongzhong Electrical Co., Ltd.) is an indoor switchgear for rated voltage 12kV, AC 50/60Hz. It adopts a modular operating mechanism and is suitable for various industrial and mining enterprises, as well as power grid equipment. It can be used as a handcart unit for use with KYN28A-12 switchgear, or as a fixed unit with relevant mechanical interlocking, making it suitable for XGN2 and other fixed cabinets.
Shaanxi West Power Tongzhong Electrical Co., Ltd. is a leading manufacturer with over 20 years of experience, specializing in high quality 7 to 40.5kV vacuum circuit breakers, switchgears, and a wide range of electrical products. Our advanced manufacturing process ensures reliable, durable solutions, especially our VTZ series vacuum circuit breakers, which are maintenance-free for up to 20 years. With a team of expert technicians, we excel in R&D, manufacturing, and after-sales service for both high and low voltage equipment, delivering excellence at every stage.
contact us
Shaanxi West Power Tongzhong Electrical Co., Ltd.
Contact: Ms.Grace Liu (International Sales Manager)
Email:xdtz04@westpowerelectric.com
Mobile: +86 18091765882(WhatsApp/Wechat/facebook/telegram)
