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  • Product description and use method:

    VS1 (ZN63) -12 indoor high voltage vacuum circuit breaker

    I. Overview

    VS1 (ZN63) -12 indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor switchgear with a rated voltage of 12KV power system, or a place where the short-circuit current is interrupted multiple times.
    The circuit breaker adopts the integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or a transmission propulsion mechanism to form a handcart unit.


    Second, the use of environmental conditions

    a. ambient air temperature; upper limit + 40 ° C, lower limit -15 ° C;
    b. Altitude: ≤1000m (if the altitude needs to be increased, the rated insulation level will be increased accordingly);
    c. Amplitude: the seismic intensity does not exceed 8 degrees;
    d. The daily average of relative air temperature is not more than 95%, and the monthly average is not more than 90%;
    e. No fire, explosion hazard, severe pollution, chemical corrosion and severe vibration.


    Three, model meaning

    Fourth, the main technical parameters

    Serial number

    name

    unit

    data

    1

    Rated voltage

    KV

    12

    2

    Rated frequency

    HZ

    50

    3

    Rated absolute
    Margin level

    工频耐压 lmin power frequency withstand voltage

    KV

    42

    峰值) Lightning impulse withstand voltage ( peak )

    75

    4

    Rated short-circuit breaking current

    KA

    20

    25

    31.5

    40

    5

    Rated current

    A

    630
    1250

    630
    1250

    1250 16000
    2000 2500

    1250 1600
    2000 2500
    3150

    6

    Rated short-time withstand current (effective value)

    KA

    20

    25

    31.5

    40

    7

    Rated peak withstand current (peak)

    50

    63

    80

    100

    8

    峰值) Rated short-circuit closing current ( peak )

    50

    63

    80

    100

    9

    Rated short-circuit current duration

    S

    4

    10

    Mechanical life

    Times

    20000

    11

    Power frequency withstand voltage of secondary circuit

    V

    2000

    12

    Rated operating sequence

    合分-t1-合分 Points -t -total- t1 -total

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