What is indoor vacuum circuit breaker?
Indoor vacuum circuit breaker is a kind of switchgear widely used in electric power system, which uses vacuum interrupter to isolate and control the on-off of the circuit. Below, we will analyze how to choose the right indoor vacuum circuit breaker from the perspectives of product structure, how to choose the product, product advantages, use scenarios and so on.
1.The indoor vacuum circuit breaker Product structure
Indoor vacuum circuit breaker is mainly composed of vacuum interrupter, operating mechanism and insulation support parts. The vacuum interrupter is the core component of the circuit breaker, which uses a vacuum environment to isolate the current, and when the circuit is broken, the current is truncated, thus avoiding the generation of electric sparks. The operating mechanism is the operating mechanism of the circuit breaker, which can be operated manually or electrically for closing and opening operations. Insulation support is used to support and fix the vacuum interrupter and operating mechanism of the components, it must have good insulation properties.
2. how to choose the indoor vacuum circuit breaker?
When choosing indoor vacuum circuit breaker, the following important factors need to be considered:
1)operating mechanism: the operating mechanism must be flexible and reliable to facilitate closing and opening operations.
2)Rated current: the rated current of the circuit breaker must be greater than the rated current of the circuit to ensure the long-term stable operation of the circuit breaker.
3) Maintenance cycle: the maintenance cycle of vacuum circuit breaker must be determined according to the actual situation to ensure the reliable operation of the circuit breaker.
3. Product Advantages
Indoor vacuum circuit breaker has the following advantages:
Small volume and light weight: Vacuum circuit breaker is high vacuum due to its arc extinguishing medium and the insulating medium of contact gap, which makes its volume and weight relatively small and easy to install and maintain.
Small operating power: the dynamic and static contacts of vacuum circuit breaker have small opening torque and small operating power, so the mechanical and electrical life is long.
Simple maintenance: the contacts and arc extinguishing structure of vacuum circuit breaker are sealed in glass or ceramic containers, no high air pressure will be generated during operation due to arc ignition, which makes it safe to use and simple to maintain, and there is no big noise.
Suitable for frequent operation: Vacuum circuit breakers are particularly suitable for frequent operation of the use of the place, because of its arc extinguishing process without maintenance, the operation of less dangerous.
High insulation strength and short arc ignition time: With short arc ignition time and high insulation strength, vacuum circuit breakers are able to maintain the same breaking capacity in the breaking position as in the case of disconnection, which is suitable for developmental faults and multiple lightning strikes.
Environmentally friendly: vacuum circuit breaker does not produce harmful gases, easy to assemble, and good heat dissipation in the structure of the interrupter chamber, uniform electric field distribution, small external dimensions.
Multifunctionality: Vacuum circuit breakers not only have overload protection and short-circuit protection, but also can monitor and control the circuit status, issue timely alarms, and protect electrical equipment and systems.
Shaanxi West Power Tongzhong Electrical Co., Ltd. produces "VTZ" brand indoor vacuum circuit breaker series products in the engineering system plays an increasingly important role, and is trusted by users.
VTZ-12 vacuum circuit breaker current level range of 630A-4000A, breaking current range of 25kA-50kA, modular operating mechanism, integrated energy storage handle, the overall layout of the beautiful, modular design of the electrical components, easy to disassemble, easy to replace, the use of solid sealing pole or ordinary insulated cylinder, to meet different customer needs, suitable for the mainstream of the open.
