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China XGN-12 Solid-Insulated Fully Enclosed Ring Main Switchgear | Reliable Suppliers & Factory Solutions

The xGN-12 series solid-insulated ring main unit represents the pinnacle of modern electrical engineering. Designed as a fully enclosed, maintenance-free vacuum switchgear, this innovative solution features high-voltage live parts that are expertly crafted from epoxy resin, ensuring exceptional insulation properties. The unit seamlessly integrates a vacuum interrupter, main conductive circuit, and insulating supports into a single, robust configuration, making it a preferred choice among suppliers in China, With its fully insulated solid-state busbars, the xGN-12 switchgear guarantees reliable performance, unaffected by external environmental conditions. This design not only enhances operational safety for technicians but also ensures operational reliability over time, Ideal for 50Hz, 12kV power systems, this ring main unit is extensively utilized in industrial and civil applications, including cable ring networks and distribution network terminal projects. It effectively functions as a receiver and distributor of electrical energy, making it particularly suitable for urban residential power distribution, small substations, switching stations, cable branch boxes, prefabricated substations, and various sectors such as shopping malls, airports, subways, wind power facilities, hospitals, stadiums, railways, and tunnels, The xGN-12 series is specially engineered to operate in challenging environments, showcasing its durability in high altitudes, high temperatures, high humidity, extreme cold, and severe pollution. As a leading factory in the production of advanced electrical components, we are committed to delivering top-notch solutions tailored to your needs. Trust the xGN-12 series for a secure and efficient electrical distribution system

    🏗Structural Features

    The XGN-12 switchgear cabinet is constructed with high-quality cold-rolled steel sheets, treated with electrostatic powder coating for excellent corrosion resistance and long service life. The cabinet is divided into three independent compartments:

    • 1Busbar Compartment – safely enclosed to ensure stable power transmission
    • 2Circuit Breaker / Load Switch Compartment – equipped with vacuum circuit breakers or load break switches
    • 3Cable Compartment – designed for easy cable connection and maintenance

    All compartments are separated by grounded metal partitions to prevent fault propagation and improve operator safety.


    ⚡Key Functional Advantages
    • High Safety Level: Fully metal-clad structure with interlocking mechanisms prevents misoperation
    • Reliable Switching Performance: Uses vacuum circuit breakers with high breaking capacity
    • Compact Design: Space-saving solution suitable for indoor installations
    • Easy Operation & Maintenance: Clear mimic diagrams, indicator lights, and front-access design
    • Strong Environmental Adaptability: Suitable for harsh industrial environments

    📋Detailed Technical Parameters & Rated Electrical Parameters
    Rated Voltage12kV
    Rated Insulation Voltage12kV / 42kV (power frequency / lightning impulse)
    Rated Frequency50Hz / 60Hz
    Rated Current630A, 1250A, 1600A (optional)
    Rated Short-Time Withstand Current
    • 20kA / 4s
    • 25kA / 4s
    • 31.5kA / 4s
    Rated Peak Withstand Current50kA / 63kA / 80kA

    🔌Circuit Breaker Parameters
    TypeVacuum Circuit Breaker (VCB)
    Breaking CapacityUp to 31.5kA
    Mechanical Life≥10,000 operations
    Electrical Life≥50 operations at rated short-circuit current

    🛡Protection & Control
    Protection FunctionsOvercurrent, short circuit, earth fault, overload
    Control VoltageDC 110V / DC 220V / AC 220V (optional)
    MeteringAmmeter, voltmeter, energy meter (digital or analog)
    IndicationOn/off status, fault indication, warning lights

    🌡Environmental Conditions
    Installation TypeIndoor
    Ambient Temperature
    • Maximum: +40°C
    • Minimum: −10°C (customizable to −25°C)
    Relative Humidity
    • Daily average ≤95%
    • Monthly average ≤90%
    Altitude≤1000m (custom design available for higher altitudes)

    🔧Mechanical & Installation Parameters
    Cabinet StructureMetal-enclosed, floor-mounted
    Ingress ProtectionIP4X (cabinet), IP2X (internal compartments)
    Cable EntryBottom or top entry (customizable)
    Busbar MaterialCopper or aluminum (optional)

    🏭Typical Applications
    ⚡Medium voltage substations 🏗Industrial power distribution systems 🏢Commercial buildings and shopping centers 🌱Power plants and renewable energy projects 🌐Urban and rural distribution networks

    ✅Conclusion
    The XGN-12 high voltage switchgear is a mature, cost-effective, and internationally recognized solution for 12kV power distribution systems. With its robust construction, high safety standards, flexible configuration, and excellent electrical performance, it meets the demands of modern power networks and industrial users. It is an ideal choice for customers seeking reliable medium voltage switchgear for long-term operation.

    🖼Detail Pictures
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    ❓Frequently Asked Questions (FAQ)
    QWhat is the rated voltage of the XGN-12 switchgear cabinet?
    The XGN-12 switchgear cabinet has a rated voltage of 12kV, with a rated insulation voltage of 12kV (power frequency) and 42kV (lightning impulse), making it suitable for medium voltage power distribution systems.
    QWhat types of circuit breakers are used in the XGN-12 switchgear?
    The XGN-12 uses Vacuum Circuit Breakers (VCB) with a breaking capacity of up to 31.5kA, a mechanical life of ≥10,000 operations, and an electrical life of ≥50 operations at rated short-circuit current.
    QIs the XGN-12 switchgear suitable for outdoor installation?
    No, the XGN-12 switchgear is designed for indoor installation only. It is a floor-mounted, metal-enclosed cabinet with an ingress protection rating of IP4X for the cabinet and IP2X for internal compartments.
    QWhat protection functions does the XGN-12 switchgear provide?
    The XGN-12 provides comprehensive protection including overcurrent protection, short circuit protection, earth fault protection, and overload protection. It also features on/off status indication, fault indication, and warning lights for easy monitoring.
    QCan the XGN-12 switchgear be customized for special environmental conditions?
    Yes, the XGN-12 can be customized for special requirements. For example, the minimum ambient temperature can be extended to −25°C (standard is −10°C), and custom designs are available for installations at altitudes above 1000m. Cable entry direction (top or bottom) and busbar material (copper or aluminum) are also customizable.
    QWhat are the main application areas of the XGN-12 switchgear?
    The XGN-12 switchgear is widely used in medium voltage substations, industrial power distribution systems, commercial buildings and shopping centers, power plants and renewable energy projects, as well as urban and rural distribution networks.