Power System 12kV, 630A
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Huajidian 11kV SF6 GIS gas-insulated switchgear is a highly intelligent, environmentally friendly, and durable ring main unit specifically designed for modern power distribution systems. Compared to traditional SF6-insulated switchgear, this product uses dry air and nitrogen instead of the highly greenhouse gas SF6, achieving zero SF6 emissions, significantly reducing carbon emissions from power grid operation, and demonstrating outstanding green and energy-saving advantages.
The equipment adopts a compact layout and standardized modular design, integrating sensor acquisition, automatic control, and intelligent monitoring technologies. It combines power receiving, distribution, protection, and monitoring functions, ensuring stable operation and strong anti-interference capabilities. All products undergo rigorous quality inspection throughout the entire factory process, guaranteeing stable and reliable quality. Standardized and customized product solutions can be provided for different scenarios, comprehensively covering power distribution needs in urban residential power supply, new energy grid connection, industrial and mining enterprises, transportation hubs, medical facilities, and supermarkets.
The 11kV SF6 GIS gas-insulated switchgear uses clean air and nitrogen as insulation and arc-quenching media, completely eliminating SF6 greenhouse gas pollution. The equipment boasts excellent sealing performance, with an annual leakage rate of only 0.01ppm and an internal moisture content of ≤150μL/L, meeting domestic and international green power grid construction standards and enabling long-term low-carbon, environmentally friendly, and stable operation of the power distribution equipment.
Equipped with a high-precision sensing, automatic control, and information acquisition system, it can monitor equipment operating status and partial discharge in real time, enabling fault early warning and remote control. It supports grid automation self-healing functions, quickly locating and isolating line faults, effectively improving the intelligence level and operation and maintenance efficiency of the distribution network.
Adopting an integrated modular design, the equipment occupies a small area and supports both top and side expansion installation methods to adapt to different installation spaces. The equipment has a robust structure, with an 8-degree seismic fortification capability, and is extremely durable. The circuit breaker has a mechanical life of up to 10,000 cycles, the disconnecting switch and grounding switch have an operational life of 3,000 cycles, and the resistance per phase of the main circuit is ≤120μΩ, ensuring long-term stable and fault-free operation.
It can operate stably in extreme temperature environments from -40℃ to +50℃, is suitable for areas at altitudes of 4000 meters and below, and can withstand high humidity and harsh weather conditions. The air chamber has an IP67 protection rating, and the cabinet exterior has an IP4X protection rating, effectively preventing dust, water, and foreign object intrusion, thus meeting the needs of complex indoor and outdoor operating conditions.
- Rated Voltage: 12kV
- Rated Frequency: 50Hz Three-phase AC
- System Type: Single busbar/Single busbar sectionalized system
- Ambient Temperature: -40℃~+50℃
- Relative Humidity: Daily average <95%, Monthly average <90%
- Applicable Altitude: ≤4000 meters
- Seismic Resistance: 8 degrees
- Rated Current: 630A
- Arc Extinguishing Method: Vacuum Interruptor
- Insulation Medium: Clean air/Nitrogen
- Rated Short-Circuit Breaking Current: 20kA
- 3s Rated Short-Time Withstand Current: Main circuit 20kA, Grounding circuit 17/4kA
- 1min Power Frequency Withstand Voltage: Phase-to-phase/Ground 42kV, Break-off 48kV
- Lightning Impulse Withstand Voltage: Phase-to-phase/Ground 75kV, Break-off 85kV
- Partial discharge: ≤20pC
- Internal arc withstand capability: 20kA/0.5s
- Annual gas leakage rate: 0.01ppm
- Zero-pressure operation: Supports normal operation under zero gauge pressure
- Top expansion circuit breaker cabinet/cable cabinet: 420×850×1950
- Top expansion PT cabinet: 600×850×1950
- Side expansion circuit breaker cabinet/cable cabinet: 420×850×2000
- Side expansion PT cabinet: 600×850×1950
Huajidian 11kV SF6 GIS gas-insulated switchgear is mainly used for power reception and distribution in industrial and civil cable ring networks and distribution network terminal projects. Widely applicable to urban residential power distribution, small substations, switching stations, cable branch boxes, box-type substations, industrial and mining enterprises, shopping malls, airports, subways, wind farms, hospitals, stadiums, railways, tunnels, and other scenarios, covering various medium-voltage power distribution scenarios such as civil buildings, industrial production, and new energy power generation.
A logistics industrial park in Chongqing suffered from aging equipment and insufficient power supply reliability. The project replaced the old equipment with Huajidian intelligent GIS switchgear. Leveraging its modular design and quick installation, the project completed equipment replacement and grid connection commissioning in a short time, achieving intelligent monitoring of the park's power grid. The product's 20kA short-circuit withstand capability and internal arc protection performance effectively resist the impact of industrial load fluctuations, providing stable power supply for the park's production and logistics operations.
Q1: Compared to traditional SF6 equipment, what are the core environmental advantages of this GIS switchgear?
Traditional GIS equipment relies on SF6 gas, which has a strong greenhouse effect, and leaks can cause serious environmental damage. This Huajidian device uses pure air and nitrogen as environmentally friendly insulating media, completely eliminating the risk of SF6 pollution. Meanwhile, the equipment boasts excellent sealing performance, with an annual leakage rate as low as 0.01ppm, highlighting its green and low-carbon attributes, making it a mainstream upgrade product for modern green smart grids.
Q2: Can the equipment operate normally in extreme environments such as high altitude and low temperature?
It can operate stably. The product is specifically designed for harsh working conditions, with an operating temperature range of -40℃ to +50℃, suitable for altitudes of 4000 meters and below, and has an 8-degree seismic resistance capability, able to withstand harsh environments such as low temperature, low pressure, and high humidity. It also supports zero gauge pressure operation, allowing normal operation even with slight air pressure fluctuations, demonstrating extremely high operational stability.
Q3: Does the product support customized solutions and supporting after-sales technical services?
Huajidian provides customized solutions for all scenarios and one-stop technical services. Based on the user's installation space, operating conditions, and grid configuration, we can customize equipment expansion methods, parameter configurations, and intelligent monitoring functions. We also provide a full-process service including pre-sales solution design, in-sales installation guidance, and after-sales operation and maintenance. You can consult us at any time to obtain quotations, drawings, and solution optimization services.
Huajidian leverages its standardized factory production system and comprehensive technical service system to provide high-quality 11kV SF6 GIS gas-insulated switchgear and related services to users worldwide. We support product customization, technical coordination, drawing provision, and on-site guidance. For product quotations, parameter matching, case consultations, etc., please contact us anytime via our website or hotline.
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