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12kV CKWZ Outdoor Vacuum Breaker

Categories VCB
Place of Origin: China
Brand Name: Comking
Certification: ISO9001,ISO14001,OHSAS18001
Model Number: CKWZ
Packaging Details: plywood case
Delivery Time: 30days
Rated Voltage: 12kV
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    • Product Details
    • Company Profile

    12kV CKWZ Outdoor Vacuum Breaker

    1.Description

    CKWZ is a three-phase AC outdoor vacuum circuit breaker maximum up to 24kV rated voltage and 50Hz rated frequency.


    2. Working Condition

    2.1 Ambient air temperature: -45℃~+40℃,daily range of temperature: diurnal variation 25℃

    2.2 Relative humidity: daily average data ≤95%, monthly average data ≤90%

    2.3 Seismic capacity: ≤magnitude 8, horizontal acceleration ≤ 0.4g, vertical acceleration ≤ 0.2g

    2.4 Altitude: ≤1000m

    2.5 Pollution classification: IV.

    2.6 Wind speed: ≤35m/s

    2.7 Applicable in the places without fire, without explosion risk, and without violent vibration

    (Exceeding above working condition is available as customized product)


    3.Technical Data

    Description

    Unit

    Parameter

    Rated voltage

    kV

    12

    24

    Rated frequency

    Hz

    50

    50

    Rated current

    A

    630

    630

    Rated short-time withstand current(4s)

    kA

    20

    20

    Rated peak withstand current

    kA

    50

    50

    Rated short-circuit making current(peak)

    kA

    50

    50

    Rated short-circuit breaking current

    kA

    20

    20

    Breaking times for rated short-circuit breaking current

    times

    30

    30

    Mechanical life

    times

    10000

    10000

    Power frequency withstand voltage(1min)

    kV

    42/48

    50/60

    Lighting impulse withstand voltage

    kV

    75/85

    125/145

    Clearance between open contacts

    mm

    9±1

    12±1

    Withstand voltage for secondary circuit (1 min)

    V

    2000

    2000

    Opening speed

    m/s

    1.2±0.2

    1.4±0.25

    Closing speed

    m/s

    0.8±0.2

    0.8±0.2

    Bounce time for contact’s closing

    ms

    ≤2

    ≤2

    Opening simultaneity for three-phase

    ms

    ≤2

    ≤2

    Loop resistance (without disconnector)

    μΩ

    <80

    <80


    4. Standard

    ----GB1984-2003

    ----GB/T11022-2011

    ----GB/T11023-1989

    ----GB311.1-1997

    ----DL/T593-1996

    ----DL/T402-1999

    ----GB/T3309-1989

    ----DL403-1999

    ----IEC62271-100


    Contact: Summer Yang(+86 15916286020)
    Email: international-sales01@zhcomking.com;comkingswitchgear@gmail.com
    www.comkingswitchgear.com

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