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location：Intelligent Power Distribution Products > Medium Voltage Ring Main Unit

GIR Series - AIRE
Eco-friendly Gas Insulated Ring Main Unit

Features
The GIR-AIR Series Eco-friendly Gas Insulated Ring Main Unit constitutes a range of environmental friendly gas-insulated ring main units, independently engineered by Xiamen Minghan Electric. These units were designed in response to the growing demand for green switchgear solutions in the evolving green power grid infrastructure. This product also serves as an embodiment of the vital role that intelligent switchgear upgrades play in enhancing equipment reliability. The units boast a compact design, intelligent features, high-performance, and environmentally friendly attributes in distribution products.
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  • Features
  • Parameter
  • Application field

  • Voltage level: 12kV

    Product features:

    1.The main tank contains eco-friendly gas and insulation materials, enhancing the material recycling rate and minimizing environmental impact throughout the product lifecycle
    2.The integrated DTU application technology integrates protection, measurement, and control functionalities
    3.This product is a standardized offering customized for the State Grid, integrating first and second stage fusion standardized design, in compliance with national power grid standards
    4.With Minghan's digital power distribution technology, we provide state-of-the-art online monitoring, analytical judgements, control measures, and transmission communications


  • Items


    Unit



    Load switchgear



    Circuit breaker cabinet



    Rated voltage


    KV

    12

    12


    Power frequency withstand voltage



    Phase tophase and Phase to ground


    KV

    42

    42


    Across vacuum contacts


    KV

    48

    48


    Lightning impact



    Phase tophase and Phase to ground


    KV

    75

    75


    Across vacuum contacts


    KV

    85

    85


    Rated current


    A

    630

    630


    Rated closed-loop switching current


    A

    630

     

    5%of the rated active load breaking current

    A

    31.5

     


    Rated active load breaking current


    A

    630

     


    Rated short-circuit breaking current


    KA

     

    25


    Rated short-time withstand current


    KA

    25

    25


    Rated peak withstand current


    KA

    63

    63


    Rated short-circuit closing current


    KA

    63

    63


    Mechanical life


    次

    5000

    5000

  • Power grids, substations, industrial zones, transportation, real estate, communications, environmental protection, municipal and technical facilities