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

GIR-GA series
Smart Ring Main Unit with functions for HV and LV side

Features
The GIR Series Ring Main Unit is an innovative, intelligent, gas-insulated unit developed by Minghan Electric. It features cutting-edge programmed control, intelligent protection, and exhaustive online status monitoring. The unique three-dimensional design ensures our switchgear technology stays up-to-date, meeting the highest safety standards and conforming to standardized designs, thus serving a broad range of customer requirements.
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  • Features
  • Parameter
  • Application field

  • Voltage level: 12kV

    Product features:

    1.The integrated DTU application technology integrates protection, measurement, and control functionalities

    2.Comprehensive intelligent control technology and programmatic operations, with pioneered patent technology for electrical control of Earthing switch in the RMU

    3.With Minghan's digital power distribution technology, we provide state-of-the-art online monitoring, analytical judgements, control measures, and transmission communications

    4.Tailored to State Grid standards, it features integrated primary and secondary standardized design, compliant with State Grid standards, ensuring worry-free customer usage


  • Items

    Unit

    Load switchgear

    Circuit breaker cabinet

    Rated voltage

    KV

    12

    12

     

    Power frequency withstand voltage

    Phase to-phase 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

     

    20

    Rated short-time withstand current

    KA

    20

    20

    Rated peak withstand current

    KA

    50

    50

    Rated short-circuit closing current

    KA

    50

    50

    Mechanical life

    Times

    5000

    5000



  • Power grids, substations, industrial zones, transportation, real estate, telecommunications, environmental protection, municipal and technical facilities, among others.