Jiangsu Huachen Transformer Co.,Ltd.
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The HCXGN Series SF6 Gas Insulated Ring Main Unit (RMU) is an innovative medium voltage switchgear solution independently developed by Jiangsu Huachen Transformer Co., Ltd. Designed for secondary power transmission and distribution applications, this advanced SF6 insulated RMU adopts a modular design that supports free arrangement according to diverse project specifications, realizing a perfect combination of common-box and single-gas-box units to meet the flexible usage demands of compact switchgear in various secondary distribution substations. As a fully sealed power distribution system, all primary components of the HCXGN series gas insulated switchgear are enclosed in a stainless steel housing, completely isolated from external environmental impacts to ensure stable operation in complex conditions.
The model coding of the HCXGN series RMU follows a standardized system: Huachen box-type fixed indoor design code - rated voltage (kV) - rated current (A) - rated short-time withstand current (kA) - cabinet type, enabling quick identification of core parameters for project matching.
The series offers a full range of configurable units to cover all power distribution needs:
C: Load switch unit + busbar side bushing
F: Fuse-switch combination unit
V: Circuit breaker unit
D: Cable incoming unit
M: Metering unit
SL: Bus tie unit
PT: Voltage transformer unit
This modular SF6 insulated ring main unit boasts a compact structure with minimal footprint, maintenance-free design, and long service life. It has passed type tests from national-level high-voltage electrical test centers, with outstanding safety and reliability performance. The fully sealed stainless steel housing provides superior environmental resistance, eliminating the impact of dust, moisture, and chemical corrosion on internal components.
For power distribution engineering teams and facility operators, the flexible modular configuration reduces design and installation time, while the maintenance-free structure significantly lowers long-term operation costs. The compatibility with both common-box and single-gas-box designs enables seamless adaptation to various substation layout requirements, maximizing space utilization in compact sites.
Parameter Category | Core Specifications |
|---|---|
Rated Voltage Range | 3.6kV-40.5kV (covering 12kV, 24kV, 40.5kV standard ratings) |
40.5kV Cabinet Dimensions | Cabinet depth: 970mm; Cabinet height: 1900mm (without instrument box, customizable); Optional instrument box height: 200mm, 350mm, 470mm; 1-unit gas box width: 500mm/500mm (V type); 2-unit gas box width: 1000mm/1000mm (V type) |
12/24kV Gas Box Width | 1 unit: 325mm/375mm; 2 units: 650mm/750mm; 3 units: 975mm/1125mm; 4 units: 1300mm/1500mm |
Customization Support | State Grid standardized size cabinet type available, total cabinet width customizable based on project scheme |
The HCXGN series SF6 RMU is designed and manufactured in full compliance with domestic and international industry standards, including:
GB/T 3804: High-voltage AC load switches for 3.6kV-40.5kV systems
GB/T 1984: High-voltage AC circuit breakers
GB/T 11022: Common technical requirements for high-voltage switchgear and control equipment standards
GB/T 3906 & DL/T 404: AC metal-enclosed switchgear and control equipment for 3.6kV-40.5kV systems
12kV Ring Main Cabinet Standardized Design Customization Scheme (2020 Edition)
This compact medium voltage gas insulated RMU is widely used in scenarios requiring high reliability and space-saving power distribution, including small secondary distribution substations, box-type switchyards, industrial and mining enterprises, airports, railways, commercial districts, high-rise buildings, expressways, subways, tunnels, and sites with harsh natural conditions. It is the ideal choice for power distribution project contractors, industrial facility operators, and utility companies pursuing high operational stability.
Yes. We provide fully customized solutions, including State Grid standardized size cabinet types, optional instrument box heights, and adjustable total cabinet width according to your project configuration scheme.
The fully sealed stainless steel housing isolates all primary components from the external environment, making it suitable for harsh conditions with high humidity, dust, or chemical corrosion, ensuring stable long-term operation.
The series covers a rated voltage range of 3.6kV-40.5kV, including mainstream 12kV, 24kV, and 40.5kV ratings to meet diverse power distribution project requirements.
