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12KV 630A Vacuum VCB Circuit Breaker Withdrawable Type

    Buy cheap 12KV 630A Vacuum VCB Circuit Breaker Withdrawable Type from wholesalers
     
    Buy cheap 12KV 630A Vacuum VCB Circuit Breaker Withdrawable Type from wholesalers
    • Buy cheap 12KV 630A Vacuum VCB Circuit Breaker Withdrawable Type from wholesalers

    12KV 630A Vacuum VCB Circuit Breaker Withdrawable Type

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    Brand Name : KNKONG
    Model Number : VS1-12
    Certification : CB,ISO,IEC
    Price :
    Payment Terms : L/C, T/T, Western Union
    Supply Ability : 1000 Unit per month
    Delivery Time : 15 working days
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    12KV 630A Vacuum VCB Circuit Breaker Withdrawable Type

    12KV 630A Vacuum Circuit Breaker VCB VS1 series

    Voltage: 12KV

    Current: 630A

    Breaking current: 25KA

    Type: withdrawable


    Product overview

    VS1-Series embedded pole. vacuum circuit breakers are applicable to 12kV, three-phase AC 50Hz indoor switchgear and can serve as protection and control units for industrial and mining establishment transformer substation equipment. With modular and independent-frame design for their spring operating mechanisms, VS1-Series circuit breakers can operate with KYN28-12(24) mid-set and fixed switchgear. These circuit breakers are subject to both fixed installation and assembly with the truck as a handcart unit


    VS1-Series circuit breaker features high stability and high reliability

    In terms of mechanisms, VS1-Series vacuum circuit breakers are given special optimization to transmission parts. Modular spring mechanisms have such advantages as convenient maintenance, short power-off maintenance, high versatility of parts, and boast better compatibility with vacuum interrupters which greatly improves the technical parameters and delivers more excellent performance.


    Normal service condition

    Altitude≤1000m
    Ambient temperatureMax+40℃
    Min-15℃

    Ambient humidity:

    Maximum average humidity

    24 hours ≤95%
    1 month ≤90%
    Maximum water vapor pressure24 hours ≤2.2kpa
    1 month ≤1.8kpa

    Technical Parameters

    No.ItemUnitParameter
    1Rated voltageKV12
    2Rated frequencyHz50/60
    3

    Rated insulation level

    1min power frequency withstand voltage(r. m. s)

    KV

    42(phase-to-phase, phase-to-earth)

    48(across the isolating distance)

    Lighting impulse withstand voltage (peak)

    75(phase-to-phase, phase-to-earth)

    85(across the isolating distance)


    4


    Rated current


    A

    63063012501600
    1250125016002000
    20002500
    25003150
    4000
    5Rated short-circuit breaking current

    KA

    202531.540
    6Rated short-time withstand current202531.540
    7Rated short-circuit marking current506380100
    8Rated peak withstand current506380100
    9Rated duration of short-circuits4
    10Rated operating sequenceO-0.3s-O/C-180s-O/C
    11Breaking times of rated short-circuit currentTimes30/20 times(40KA)
    12Mechanical enduranceOps20000
    13Rated single capacitor bank breaking current

    A

    630
    14Rated back-to-back capacitor bank breaking current400
    15Double-earth fault breaking current27.4
    16Allowable maximum contact erosion

    mm

    3
    17Clearance between open contacts10±1
    18Over stroke3.5±0.5
    19Non-simultaneity of 3-phase opening and closing

    ms


    ≤2
    20Bounce duration of contact closing≤2
    21Average breaking speed (instant breaking 6mm)

    m/s


    1.1±0.2
    22Average making speed0.8±0.2
    23Making time

    ms


    ≤100
    24Breaking time≤50

    25


    Resistance of each phase main circuit


    μ Ω

    630A≤50
    1250A≤45
    1600A~2000A≤35
    ≥2500A≤25
    26Contact breaking bounce amplitudemm≤2

    27

    Rated operating voltageRated operating voltage(V)AC/DC

    V

    24*110220
    Scope of normal operation voltageOpening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage, opening operation is not allowed
    28Rated voltage of energy storage motorVAC110/220,DC110/220
    29Energy storage timeS≤15

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