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Address: 4-2, Building E, Huazhong Enterprise City, 16 North Avenue, Hankou, Wuhan City

Tel: 027-61503288

189 9560 1588

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Production of MVnex medium voltage switchgear in cooperation with French Schneider

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Other Series Products

Electrical products with voltage levels ranging from 3.6kV to 550kV, used for power generation, transmission, distribution, energy conversion, and consumption in the power system to provide on/off, control, or protection functions

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Product Details

Overview
MVnex medium voltage switchgear is another high-end product dedicated to the Chinese market by our company as a technical and business partner of Schneider Electric (China) Investment Co., Ltd. of France, adopting its technology and management system. This product is a central indoor removable metal armored switchgear. This device is suitable for 3 ~ 12kV three-phase AC 50Hz indoor power distribution system, which can meet the use requirements of various types of power plants, substations (stations), industrial and mining enterprises, and control, protect and monitor the circuit. The switchgear is particularly suitable for frequent operation.
The switchgear is fully compliant with GB3906, IEC60298 and 60694 standards.
 
Features
The switch cabinet is made of Evolis vacuum circuit breaker, grounding switch and Sepaml000 multi-function digital protection device provided by Schneider of France. It has excellent technical performance and is easy to install and operate.
The complete design form of withdrawable circuit breaker and intelligent chassis vehicle, equipped with metal valve baffle and special casing, is different from the installation method of common central-mounted indoor removable metal armored switch cabinet parts, ensuring the flexibility and reliability of the circuit breaker entry and exit mechanism.
Enclosure grade IP4X, in line with IEC60529. Inter-compartment IP2X.
The metal plate adopts aluminum-zinc plate and electro-galvanized plate, which has good corrosion resistance.
The front door panel surface treatment is high temperature spray epoxy powder, the color is RAL9002 (white). Fireproof performance of internal insulating materials.
The busbar room, circuit breaker room and cable connection room are all provided with pressure relief channels for upward exhaust, and the overall structure ensures that overpressure gas can be effectively released.
It has the ability to resist internal arc accidents and ensure the safety of operating personnel in case of accidents.
The product has a perfect mechanical interlock device to prevent misoperation, which can effectively prevent electrical misoperation accidents.
 
Normal use environmental conditions
● The altitude does not exceed l000 meters.
● The upper limit of ambient temperature is 40 ℃, the lower limit is -5 ℃, and the average temperature within 24 hours is 35 ℃.
● Relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%.
● The surrounding air is not obviously polluted by corrosive or combustible gas, water vapor, etc.
● No frequent violent vibration.
Beyond the above conditions of use, the user has special requirements, can negotiate with the manufacturer special.

The switch cabinet has the functions of overhead incoming and outgoing lines, cable incoming and outgoing lines, bus connection, etc. Mainly suitable for power plants, substations, petrochemical, metallurgical steel rolling, light industry and textile, factories and mining enterprises and residential areas, high-rise buildings and other different places. It mainly includes high-voltage isolating switch and grounding switch, high-voltage load switch, high-voltage automatic coincidence and segmenter, high-voltage operating mechanism, high-voltage explosion-proof distribution device and high-voltage switch cabinet.

Correct Selection of Breaker Breaking Capacity
On the primary system diagram, the selected circuit breaker, indicating the circuit breaker model, rated working voltage and rated working current, must also be selected for the breaking capacity of the circuit breaker. With user drawings, the breaking capacity of the circuit breaker is not selected, which makes it difficult for the manufacturer to carry out engineering design. The breaking capacity selection should be based on the system short-circuit parameters. If the manufacturer does not understand the system short-circuit parameters, it is difficult to make the correct choice. There are also some user drawings, regardless of the system short-circuit parameters, blindly select high-break parameters, resulting in unnecessary waste of funds. The correct choice of breaking capacity is very important, not only to ensure safe operation, but also to consider reducing product costs.

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Production of MVnex medium voltage switchgear in cooperation with French Schneider

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