English
Product Overview:
The WMHXGN-12 environmentally friendly gas-insulated metal-enclosed switchgear is a metal-enclosed switchgear independently designed and developed by Wanma Technology Co., Ltd., adhering to environmentally friendly design principles. It utilizes environmentally friendly gas insulation and vacuum arc extinguishing technology, offering advantages such as simple structure, small size, low cost, maintenance-free operation, and safe and reliable power supply. It is widely used in small distribution substations and packaged substations in urban residential areas, high-rise buildings, factories, airports, railways, and public buildings.
Operating Environment:
Ambient temperature: Maximum temperature 40℃, temperature -25℃, daily temperature difference 25K
Altitude: ≤1000m
Solar radiation intensity: 0.1W/cm²
Pollution level: d
Humidity: Average daily relative humidity ≤95%
Earthquake resistance (horizontal acceleration): 2m/s²
For special operating environments different from the above conditions, such as high altitude, low temperature, or severe pollution, the user needs to consult with the manufacturer when ordering.
Technical Features:
1. The WMHXGN-12 environmentally friendly gas-insulated metal-enclosed switchgear uses environmentally friendly gas (dry air) to replace traditional SF6 as the insulating medium. Gas leakage is non-polluting, and no additional gas recovery and treatment are required during the entire life cycle of the equipment, significantly reducing the environmental burden. The equipment is manufactured using non-toxic and harmless materials, and the materials can be recycled after decommissioning, further reducing environmental impact.
2. The primary main circuit is sealed in a 3mm thick S304 stainless steel gas box, with a protection level of IP67 and an annual leakage rate of ≤0.01%. The main switch uses a stable and reliable vacuum interrupter as the core component for breaking and making operations of the circuit breaker and load switch. It features a small contact gap, short arcing time, and minimal contact wear when interrupting fault currents. The light mechanical transmission not only improves the mechanical operating life of the switch, but the vacuum interrupter in the grounding circuit also allows for multiple grounding operations, meeting the frequent operation requirements of the power grid. 1. The use of a three-position isolation/grounding switch as a visible disconnect point allows for clear observation of the isolation/grounding switch's open and closed positions, facilitating intuitive confirmation of equipment status by maintenance personnel; dual protection with mechanical and electrical interlocks ensures stable and reliable product operation; an explosion-proof valve and pressure relief channel are configured at the bottom of the gas tank, allowing for rapid pressure relief when the internal pressure rises abnormally, preventing damage to personnel and surrounding equipment due to gas tank rupture.
3. Adopting a modular design, it can combine various functional units such as circuit breakers, load switches, PTs, and busbars through busbar connectors. It also supports side or top busbar expansion methods, allowing for flexible combination of solutions according to power distribution needs, adapting to installation requirements in different scenarios such as urban residential areas, airports, tunnels, and coastal areas;
4. The cabinet structure is compact, with some product cabinets only 375mm wide, and adopts a layout of upper busbar module, middle three-position isolation grounding switch, and lower circuit breaker, optimizing internal space utilization while reducing volume. Its lightweight design also facilitates transportation and on-site installation; single cabinets can be assembled on-site, avoiding the inconvenience of transportation and installation caused by multiple combined cabinets.
5. Intelligent interfaces and sensor installation positions are reserved, allowing for the configuration of non-electrical quantity monitoring components such as temperature, humidity, and air pressure. Combined with a microcomputer integrated protection intelligent measurement and control unit, it can collect equipment operating data and status information in real time. Some products can also be equipped with video surveillance, infrared temperature measurement, and other equipment to monitor key data such as contact temperature rise and switch position. Through a universal data communication interface, it can be connected to the substation automation system to achieve remote control, remote measurement, and remote signaling functions, allowing for remote monitoring of equipment operating status, fault warning, and data reporting, meeting the State Grid's requirements for unattended operation and maintenance of distribution substations, significantly reducing manual operation and maintenance costs.
Company News
