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Solid Insulated Ring Main Unit DR-GTXGN-12 - Environmentally Friendly Power Distribution Solution from China Suppliers & Factory
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DR-GTXGN-12 Solid Insulation Ring Network Switchgear

Solid Insulated Ring Main Unit DR-GTXGN-12 - Environmentally Friendly Power Distribution Solution from China Suppliers & Factory

Introducing the DR-GTXGN-12 Solid-Insulated Ring Main Unit Switchgear, a cutting-edge solution proudly manufactured by our factory in China. This innovative unit represents a new generation of environmentally friendly, fully sealed power supply systems, engineered to deliver unmatched reliability and safety, The DR-GTXGN-12 features solid insulation materials that encapsulate all live components, including conductive connectors, isolation switches, grounding switches, and main buses, into a completely insulated and sealed module. By eliminating the need for SF6 gas, our switchgear ensures that its operation is unaffected by external environmental factors, offering maintenance-free performance for years, Designed for 12kV, 50Hz three-phase AC power distribution, this ring main unit is perfect for various applications, including industrial and mining enterprises, residential complexes, schools, and parks. It can also be integrated into compact substations for effective control and protection of power distribution transformers. Both indoor and outdoor configurations make this unit ideal for power distribution automation, catering to the diverse needs of our clients, As a leading supplier in the industry, our commitment is to provide high-quality and efficient solutions tailored to meet the demands of modern power distribution systems. Choose DR-GTXGN-12 for a reliable and eco-friendly power distribution option from trusted manufacturers in China
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    Product Details

    Model and meaning

    Model and meaning diagram

    Work environmental conditions

    • It is ideal for indoor or outdoor use.
    • Ambient air temperature: Indoor -10° C~+25° C, outdoor -60° C~+60° C.
    • Relative air humidity: Daily average is no more than 95%, monthly average is no more than 90%.
    • Altitude is no more than 3000m.
    • Ambient air is free from any pollution of dust, water vapor, salt fog, corrosive gases or flammable gases; the outdoor type can be used in severe environmental conditions.
    • No severe vibration in the area to install, and the earthquake intensity is no more than 8 ML.

    When the work environmental conditions can not meet the requirements above, the user shall consult with the manufacturer.

    Safety and protection

    Insulation knife visual cutout

    With an obvious visible cutout window in front of the cabinet, it is convenient and safe for the personnel on site to check the three positions such as the insulation closing position, insulation breaking position and grounding closing position and confirm the insulation knife position.

    Pressure relief design

    Internal arcing pressure valve; when any arcing occurs in the product, the pressure will be relieved from the pressure relief valve and the arcing will be discharged to the cable trench to prevent any injury to the operator.

    Environment-friendly and green

    With environment-friendly materials in design, SF6 gas isn’t used as the arc extinguishing medium and insulation, without pollution to the environment, the primary circuit has minimum-contact design to ensure low energy consumption in operation.

    Execution standards

    • IEC62271-1-2007
    • IEC620071-200-2003
    • GB3906-2006
    • GB/T11022-2011
    • GB1984-2014
    • GB1985-2014
    • GB3804-2004
    • DL/T404-2007
    • DL/T593-2016
    • Q/GDW730-2012
    • DL/T402-2016
    Technical drawing 1
    Technical drawing 2

    Main technical parameters (whole switchgear)

    Name Unit Parameter
    Rated voltage kV 12
    Rated current A 630
    Rated short-time withstand current (4s) kA 25
    Rated peak withstand current kA 50
    Rated short-circuit closing current(peak) kA 50
    Rated active load breaking current A 630
    Rated closed loop breaking current A 630
    Rated cable charge breaking current A 10
    Rated breaking transfer current of combined appliances A 3700
    1min power frequency withstand voltage Phase-to-phase, phase-to-ground, vacuum breaking kV 42
    Insulation breaking kV 48
    Lightning impact withstand voltage Phase-to-phase, phase-to-ground, vacuum breaking kV 75
    Insulation breaking kV 85
    Mechanical life Circuit breaker Time 10000
    Insulation knife, grounding knife Time 3000
    Protection grade IP4X
    Shell protection grade IP4X
    Partial discharge pc ≤20 (Measured at 1.2Ur)

    Frequently Asked Questions (FAQ)

    What are the environmental limits for installing this switchgear?
    The switchgear is suitable for both indoor (-10°C to +25°C) and outdoor (-60°C to +60°C) installations. It operates at altitudes up to 3000m, with a daily average relative air humidity under 95% (monthly under 90%), and in seismic zones not exceeding 8 ML.
    How does the visual cutout window improve operational safety?
    The obvious visual cutout window on the front cabinet allows operators to directly check and confirm the status of the insulation knife across three critical positions: the insulation closing position, insulation breaking position, and grounding closing position.
    What safety design handles internal arcing risks?
    The switchgear features an internal arcing pressure valve. If arcing occurs inside, the pressure relief valve activates, discharging the arc safely into the cable trench to protect nearby operators from injury.
    Is SF6 gas used in this equipment?
    No, this environment-friendly design does not use SF6 gas as an arc extinguishing or insulation medium, preventing environmental pollution. Additionally, the primary circuit uses a minimum-contact design to ensure low energy consumption.
    What is the mechanical life expectancy of the main components?
    The circuit breaker is rated for a mechanical life of 10,000 operations, while the insulation knife and grounding knife are designed for 3,000 operations.
    What protection grade ratings does the switchgear carry?
    Both the internal protection grade and the overall shell protection grade are rated at IP4X.