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China DRM-24 SF6 Gas Insulated Switchgear 24kV - Reliable Suppliers and Factory Solutions for Power Distribution
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China DRM-24 SF6 Gas Insulated Switchgear 24kV - Reliable Suppliers and Factory Solutions for Power Distribution

The DRM-24 inflatable SF6 metal-enclosed fully insulated series ring network switchgear, independently developed and manufactured by our company, is a top-quality product that has successfully passed the type test conducted by the National High Voltage Electrical Test Center. This innovative switchgear is widely utilized in 24kV power distribution systems, making it the preferred choice for various users in both urban and rural settings in China.

Designed in a modular unit format, the DRM-24 can be tailored to different applications, incorporating fixed unit combinations and expandable units. This flexibility allows for the effective use of compact switchgear in diverse substations, catering to a wide range of operational needs.

As a fully sealed system, the DRM-24 inflatable switchgear ensures that all live components and switches are housed within a robust stainless steel enclosure. This design safeguards the entire switching device from external environmental influences, guaranteeing high operational reliability, enhanced safety for personnel, and maintenance-free performance. The option to select an expandable bus enables complete modularity, while the extended bus safety insulation and shielding contribute to its high reliability and safety standards. Furthermore, the DRM-24 inflatable switchgear supports TV-oriented automation solutions, embodying the concept of intelligent switching and significantly reducing the on-site installation and commissioning workload. With a design life exceeding 30 years under indoor conditions (20°C), this switchgear offers exceptional longevity.

    Model and meaning

    Model and meaning

    Product conformity

    International Standard

    IEC60056, IEC60298, IEC60129, IEC60420, IEC60265, IEC60694, etc.

    Chinese Standard

    GB3804, GB3906, GB11022, etc.

    Normal service condition

    Suitable for high and low temperature (+40°C ~ -40°C), wet, dusty, salt pollution, mine, high altitude (less than 4000 meters) and other environments. Short-term immersion within 24 hours does not affect the use.

    Note: If the altitude is higher, please indicate the specific altitude.

    Main features of product

    • DRM-24 series gas cabinet SF6 gas as arc extinguishing and insulation medium.
    • Switch cabinet is fully sealed, fully insulated structure; Bus bars, switches and live parts are completely enclosed in stainless steel housing.
    • The chamber is filled with 0.04Mpa SF6 gas, the protection level is up to IP67: The whole switch device is completely unaffected by the external environment, even in extreme cases such as short-term flooding can ensure the normal operation of the switch, and the product is maintenance-free for life.
    • The switchgear has a perfect "five prevention" interlock device, which completely prevents personnel and equipment operation failures caused by human error.
    • All switchgear has a reliable safe pressure relief channel, which can guarantee the personal safety of the operator even in extreme circumstances.
    • Switchgear is divided into two categories: fixed unit combination and expandable unit combination.
    • The switch cabinet usually enters and exits from the front, and can also realize side exit or side expansion according to different installation positions.
    • The size of the cabinet is easy to install, and can be suitable for small space and poor environmental conditions.
    • Switch cabinet can be configured with electric, remote control and monitoring devices according to different needs of users.

    Flexible outlet and expansion methods

    All DRM-24 modules can be connected by side outlet and side expansion or side outlet and top expansion according to user requirements, which meets the needs of power supply schemes to the maximum extent.

    Performance index

    SF6 Gas & Chamber

    SF6 Gas Pressure 0.04Mpa (Abs at 20°C)
    Annual Gas Leakage Rate 0.05%
    Class of Protection IP67
    Air Chamber Thickness 3.0 mm

    Bus Bar Configuration

    Inside Bus Bar 400mm² Cu
    Ground Bus Bar 150mm² Cu

    Color Standards

    Front Panel RAL 7012
    Side Panel & Cable Cover RAL 7035

    Operating Conditions

    Maximum Temperature 40℃
    Minimum Temperature To 40 °C
    Max Mean Rel. Humidity ≤ 95%
    Sea Level ≤ 2000 m

    Applicable Criteria & Standards

    • GB/T11022
    • GB3906
    • GB1985
    • GB3309
    • GB16926
    • GB38041
    • GB1984
    • IEC60056
    • IEC60129
    • IEC60256
    • IEC60298
    • IEC60420
    • IEC60694

    Frequently Asked Questions

    What is the insulation medium used in the DRM-24 series?

    The DRM-24 series gas cabinet uses SF6 gas as the arc extinguishing and insulation medium.

    What is the protection level of the DRM-24 switchgear?

    The protection level is up to IP67. The entire switch device is completely sealed and insulated in a stainless steel housing, ensuring normal operation even during short-term flooding.

    What are the normal operating temperature limits for this switch cabinet?

    The DRM-24 series is suitable for high and low temperature environments ranging from +40°C to -40°C.

    Does the switchgear support expansion?

    Yes, the switchgear is divided into fixed unit combinations and expandable unit combinations. It supports side outlet, side expansion, or top expansion depending on user requirements.

    Is the DRM-24 series maintenance-free?

    Yes, the switch cabinet is completely sealed with all bus bars and switches enclosed in stainless steel housing, making the product maintenance-free for life.