Supply VN2-24 high voltage vacuum circuit breaker 18879983199

Jiangxi Huajian Electric Power Industry Co., Ltd. is a large-scale component manufacturer newly established with full investment from Jiangxi Huajian Electric Power Industry Co., Ltd. The total investment scale is RMB 100 million, and the construction will be divided into three phases. After full production, the total annual production is expected to be RMB 100 million. The company is located in Chishan Industrial Park, Shangli County, Pingxiang City, Jiangxi Province. The company occupies an area of more than 2 square meters. After full production, the workshop production area is 2 square meters. It has a technology building, a R&D center, an automated office area and a standard workshop. The production line is equipped with advanced testing equipment. Fully automatic software testing center, formulating computer testing of product chain to realize digital automatic control. Huajian Electric Power Industry is mainly divided into seven business divisions. The seven major business divisions are Electrical Automation Division, Low Voltage Electrical Appliances Division, High Voltage Electrical Appliances Division, Industrial Control Division, Power Supply Division, Control System Division, and Technology R&D Division. It also has its own mold processing and design center and Injection molding workshop. The company now has senior engineer names, senior technical personnel names, and production employee names.
The indoor high-voltage vacuum circuit breaker is an indoor switching device with three-phase AC rated voltage for power systems. It is used as a protection and control unit for power grid equipment and power equipment in industrial and mining enterprises. It is suitable for frequent operations under rated operating current, or places where short-circuit current is broken multiple times. The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body. It can be used as a fixed installation unit or equipped with a special propulsion mechanism to form a handcart unit.
The indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an indoor switching device used in power systems. It serves as a protection and control unit for power grid equipment and power equipment in industrial and mining enterprises. Due to the special advantages of the vacuum circuit breaker, it is especially suitable for frequent operations requiring rated operating current, or places where short-circuit currents are broken multiple times.
The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body. It can be used as a fixed installation unit or equipped with a special propulsion mechanism to form a handcart unit.
Product based on standards
The circuit breaker complies with the standard requirements of "AC High Voltage Circuit Breaker", "Internal AC High Voltage Vacuum Circuit Breaker", / "~Indoor High Voltage Vacuum Circuit Breaker Ordering Technical Conditions", and complies with the (published Requirements related to things).
Environmental conditions for use
Common usage conditions
●Ambient temperature
Maximum temperature + ℃
Minimum temperature ℃
●Ambient humidity
Daily average relative Humidity
Monthly average relative humidity
Daily average vapor pressure
Monthly average vapor pressure
●Altitude does not exceed
●Seismic intensity does not exceed excessive.
●No dripping water, no flammable and explosive hazards, no chemical corrosive gases, and no violent vibrations in the use place.
, Special conditions of use
●For special conditions of use, the manufacturer and the user shall negotiate and reach an agreement to provide special design and supply
●Special conditions of use refer to
① The altitude does not exceed the location
② Places with the risk of condensation under climate conditions with high humidity or large changes in humidity.
Product structure and working principle
, Main structure
The overall structure of the vacuum circuit breaker adopts the form of operating mechanism and arc extinguishing chamber arranged front and rear. The vacuum arc extinguishing chamber is installed longitudinally in a tubular insulating cylinder. Inside, the insulating cylinder is made of epoxy resin and is cast using a process, so it is particularly resistant to creepage. This structural design greatly reduces the accumulation of dust on the surface of the arc extinguishing chamber. It not only prevents the vacuum arc extinguishing chamber from being damaged by external factors, but also ensures that it can show high resistance to voltage effects even in humid, hot and severely polluted environments.
When the circuit breaker is in the closing position, the main circuit current path (see figure)
The upper outlet seat passes through the upper bracket fixed on the arc extinguishing chamber to the static contact inside the vacuum arc extinguishing chamber, and passes through the moving contact and its connected conductive clips and soft connections, to the lower bracket and to the lower outlet seat.
When the circuit breaker leaves the factory, each current level is equipped with a dust-proof insulating cylinder cover. In actual use, it is not necessary to remove it when the rated current and below are operating, but it must be removed when the rated current and above are operating.
Operating mechanism
The operating mechanism is a planar spring operating mechanism with manual energy storage and electric energy storage. The operating mechanism is placed in the chassis in front of the arc extinguishing chamber. The chassis is surrounded by four central blocks. The partition is divided into five assembly spaces, in which the energy storage part, transmission part, tripping part and buffer part of the operating mechanism are respectively installed. The vacuum circuit breaker combines the arc extinguishing chamber and the operating mechanism to form a unified whole, that is, it adopts an integral layout. This structural design can make the operating performance of the operating mechanism more consistent with the performance required for the opening and closing of the arc extinguishing chamber, reducing the need for inconveniences. The necessary intermediate transmission links reduce energy consumption and noise, making the operating performance of the circuit breaker more reliable. The circuit breaker can be installed in either a handcart type switch cabinet or a fixed switch cabinet.
The energy required for closing the energy-storage circuit breaker is provided by the energy storage of the closing spring. Energy storage can be accomplished either by an external power supply driving the motor or manually using an energy storage handle.
For details, please contact Ms. Zhou by fax