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KYN28A-12(Z)(GZS1)



  • General

    1.Ratings:system voltage 3.6kV,7.2KV ,12KV,rated current up to 4000A,AC three
    phase 50/60HZ.
    2.Application:medium voltage gas insulated switchgear mainly applicable in the power plant,substation, mineral enterprise to receive and distribute power with the functions of controlling,protecting and
    monitoring.It also can be used in places where the frequently operations are in need.
    3.Standard: IEC62271-200


    Type designation



    Working Conditions

    1.Ambient air temperature: -15℃~+40℃.
    2.Altitude: ≤1000m.
    3.Relative humidity : Daily average≤95%, daily averange of vapour pressure≤2.2kpa.
    4.Earthquake intensity: ≤magnitude 8.
    5.Applicable in the places without corrosive and flammable gas and water vapor .
    6.Used in place without frequently intense vibrant.
    Note: Customized products are available.


  • No.ItemUnitData
    1Rated voltagekV3.6, 7.2, 12
    2Rated frequency of circuit breakerHz50
    3Rated current of circuit breakerA630, 1250, 1600, 2000, 2500, 3150, 4000
    4Rated current of switchgearA630, 1250, 1600, 2000, 2500, 3150, 4000
    5Rated short -time withstandcurrent(4s)kA16, 20, 25, 31.5, 40, 50
    6Rated withstands current (peak)kA40, 50, 63, 80, 100, 25
    7Rated short -circuit breaking currentkA16, 20, 25, 31.5, 40, 50
    8Rated short -circuit closingcurrent(peak)kA40, 50, 63, 80, 100, 25
    9Rated
    insulation
    leve
    1 min power frequency
    withstands voltage
    between poles, pole to earthkV24, 32, 42
    between open contactskV24, 32, 48
    Lightening impulse
    withstands voltage (peak)
    between poles, pole to earthkV40, 60, 75
    between open contactskV46, 70, 85
    10Protection level
    Shell: IP4X; IP2X when the CPT
    and CB doors are open

    Note:
    1. The short circuit capacity of the current transformer should be separately considered.
    2. see technical parameters of ZN63A-12 in related catalogues of our company.