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HBG-12 Environmental Protection Gas Closed Loop Switchgear - Eco-friendly 12kV Solution from China Suppliers & Factory
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HBG-12 Environmental Protection Gas Closed Loop Switchgear - Eco-friendly 12kV Solution from China Suppliers & Factory

The HBG-12 Environmental Protection Gas Closed Ring Main Unit Switchgear is an innovative green technology solution from a leading China factory. This metal-enclosed switchgear is insulated with environmentally friendly gases such as dry air or nitrogen, ensuring minimal greenhouse gas emissions. With a material recycling rate exceeding 90% at the end of its lifecycle, this switchgear is constructed from degradable materials and is epoxy resin-free, promoting sustainability while delivering reliable performance. The design incorporates vacuum arc-extinguishing circuit breakers and load switches, making it an adaptable and compact choice for various environments. Free from SF6 gas detection and protection needs, the HBG-12 operates safely and requires no maintenance, aligning with the future trends of ring main unit development.

Ideal for use in 12kV, three-phase AC 50Hz systems, the HBG-12 is versatile and can be utilized in single-bus and single-bus sectionalized power distribution systems. This product is perfect for industrial and civil applications, including urban residential areas, secondary substations, switchgear houses, cable distribution boxes, and box-type substations. It serves numerous sectors, from shopping malls, airports, and subways to wind power generation, hospitals, stadiums, railways, and tunnels, making it a top choice among suppliers in the electrical power distribution market.

    Model and Meaning

    HBG-12 Model and Meaning Diagram

    Product Features

    Comprehensive Functions, Combined Product

    The inflatable shell of the switchgear is made of high-quality 2.5mm thick stainless steel plate by laser welding to make the gas tank sealed reliably with high mechanical strength, highly resistant to corrosion, and the protection grade of the inflatable shell is IP67. The gas tank is equipped with an explosion-proof diaphragm to effectively prevent any damage to people and equipment due to high gas pressure. All conductive parts are enclosed in the gas tank to prevent the influence of external environments and make it run reliably, free from maintenance (or with little maintenance). At the same time, it is compact as required. The main circuit is equipped with a three-position switch (closing + breaking + grounding) and a vacuum arc-extinguishing chamber, which is a mature configuration and ideal for current power grid operation and maintenance.

    HBG-12 Switchgear Structural Diagram

    Environment-friendly Without Pollution

    HBG-12 Environmental Protection Gas Closed Ring Main Unit Switchgear adopts level-zero dry air (purchased) or 99.99% pure N2 in accordance with GB/T 8979-2008. Any gas leaked will not impact external environments, eliminating the need to recycle.

    Flexible Expansion Design

    HBG-12 Environmental Protection Gas Closed Ring Main Unit Switchgear has a modular design, and various modules are connected by special bus connectors for diverse combinations to meet the demands for these complicated and diverse power distribution design schemes in various areas of China as much as possible.

    Complete Mechanical Interlocking

    The operation panel of HBG-12 Environmental Protection Gas Closed Ring Main Unit Switchgear has complete five mechanical interlocks, all interlocks are configured inside; it is convenient to operate according to the operation manual.

    1 Low-voltage instrumentation room
    2 Marking
    3 Operation chamber
    4 Observation tube
    5 Electric display
    6 Cable chamber
    7 Vacuum circuit breaker/load switch
    8 Three position insulation/grounding switch
    9 Pressure relief device
    10 Switching mechanism
    11 Three-position mechanism
    12 Five-protection interlocking mechanism
    13 Incoming/outgoing cable through-wall bushing

    Frequently Asked Questions (FAQ)

    Q1: What insulating gas is used in the HBG-12 switchgear?

    A1: The HBG-12 switchgear utilizes level-zero dry air or 99.99% pure N2 gas in compliance with GB/T 8979-2008, making it completely eco-friendly and eliminating the need for gas recycling.

    Q2: What is the protection rating of the HBG-12 inflatable shell?

    A2: The inflatable shell is constructed from high-quality 2.5mm thick stainless steel plate via laser welding, achieving an IP67 protection rating for excellent dust and water resistance.

    Q3: How does the HBG-12 ensure safety during high-pressure build-ups?

    A3: The gas tank is integrated with an explosion-proof diaphragm that safely releases internal pressure to prevent damage to personnel and surrounding equipment.

    Q4: Does the HBG-12 switchgear support modular expansion?

    A4: Yes, the HBG-12 features a flexible, modular design. Various modules can be easily connected using special bus connectors to accommodate diverse power distribution schemes.

    Q5: What kind of interlocking mechanism does this switchgear have?

    A5: The operation panel is equipped with a complete set of five internal mechanical interlocks, ensuring safe and sequential operation according to the system manual.