24KV SF6 Insulated Ring Main Unit

24KV SF6 Insulated Ring Main Unit
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  • Description

    Unit

    GLX24-K

    GLX24-T

    CLX24-V1/V2

    CLX24-B

    Rated voltage

    KV

    24

    24

    24

    24

    Power frequency withstand voltage(1min)

    Phase to phase/earth

    KV

    50, (65)*

    50, (65)*

    50, (65)*

    50, (65)*

    Between open contacts

    KV

    64,(79)*

    64,(79)*

    64,(79)*

    64,(79)*

    Impulse withstand voltage

    Phase to phase/earth

    KV

    95,(125)*

    95,(125)*

    95,(125)*

    95,(125)*

    Between open contacts

    KV

    110, (145)*

    110, (145)*

    110, (145)*

    110, (145)*

    Rated frequency

    HZ

    50, 60

    50, 60

    50, 60

    50, 60

    Rated current

    A

    630

    630

    630

    Rated short circuit breaking current 

    KA

     

    20

     

    Rated short time withstand current

    KA/s

    20/3,(20/4)*

     

    20/3,(20/4)*

    20/3,(20/4)*

    Rated peak withstand current

    KA

    50

     

    50

    50

    Rated short circuit making current

    KA

    50

    50

    50

    Rated transfer current

    A

     

    1400

     

     

    Rated active load breaking current

    A

    630

     

     

    630

    Rated closed loop breaking current

    A

    630

     

     

    630

    5% rated active load breaking current

    A

    31.5

     

     

    31.5

    Rated operating sequence

     

     

     

    0~0.3s~co~~co~

    180s~c0

     

    Mechanical lifetime

    Ops.

    5000

    5000

    10000

    5000

    Electrical lifetime

     

    E3

     

    E2

    E3

    Thickness of stainless steel

    mm

    3.0

    SF6 rated pressure

    kPa

    30(at 20, 101.3kPa)

    Leakage rate per year

    0.02%

    Water treatment test

    24KV 24hours (at 30 kPa under water)

    Internal Arc Test

    20KA 1s

    Protection Degree

    Gas tank

    IP67

    Fuse holder

    IP67

    RMU

    IP4X

    About 24KV Ring Main Unit

    These series Ring Main Unit is extensible, SF6 insulated switchgear, with reated voltage of 12&24KV. All its HV live parts are contained in an air-tight gas tank, which is made from stainless steel of 3mm. The whole switching assembly is SF6 insulated, any free from any external influence, ensuring it great reliability of service and maintenance free. By plug-in type busbar extension, the series RMU can be of free combination and full modularization. The busbar extension has passed type test for power and thermal stability, and is fully insulated and shielded, exhibiting high reliability and safety.

    The series Ring Main Unit is suitable for all MV network up tp 24KV, all compact power stations, power distribution substations in all important industries, such as petrol-chemical industry, metallurgical and mining industries, and all transformer substations and wind power system.

    Technical Date for 24KV Ring Main Unit

    Notes:
    ①Rated current of Switch-fuse panel depends on rating of fuse, and ≤100A.
    ② Rated short-circuit breaking/making current of Switch-fuse panel depends on rating o fuse.
    *Value in brackets are for special requirement, please contact us for more information. If 20KA/4s is required for rated short time withstand, please specify definitely when you are ordering.

  • 24KV RMU 24KV Ring Main Unit power distribution substations i transformer substations wind power system.
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