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  • Product description and use method:

    ZW8-12G series outdoor high voltage vacuum circuit breaker

    I. Overview

    ZW8-12 / T outdoor high voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is used for AC 50Hz, voltage 10-12KV three-phase power system, as the breaking and closing load current, with overload and short circuit protection .


    Model meaning

    Third, the main technical parameters

    Serial number

    name

    unit

    data

    1

    Rated voltage

    KV

    12

    2

    Rated insulation level

    工频耐压 lmin power frequency withstand voltage

    Dry

    42

    Wet

    34

    峰值) Lightning impulse withstand voltage ( peak )

    75

    3

    Rated current

    A

    400200 630 , 400 , 200

    4

    Rated short-circuit breaking current

    KA

    1612.5 20 , 16 , 12.5

    5

    Rated operating sequence

    合分-180s-合分 Points- 0.3s -total points- 180s -total points

    6

    Rated short-circuit breaking current times

    Times

    30

    7

    峰值) Rated short-circuit closing current ( peak )

    KA

    50

    8

    Rated peak withstand voltage

    9

    Rated short-time withstand current

    20

    10

    Rated short-circuit duration

    S

    4

    11

    Opening time
    (Shunt trip)

    Maximum operating voltage

    M / S

    15-50

    Rated operating voltage

    Minimum operating voltage

    30-60

    12

    Closing time

    25-60

    13

    Full off time

    100

    14

    Arcing time

    20

    15

    Mechanical life

    Times

    1000

    16

    Closing work

    J

    70

    17

    Rated input power of energy storage motor

    W

    250

    18

    Rated operating voltage and auxiliary circuit rated voltage

    V

    DC220 / 110/24

    AC220 / 110/24

    19

    Energy storage time at rated voltage

    S

    10

    20

    Overcurrent release

    Rated current

    A

    5

    Trip current accuracy

    %

    ± 10

    Fourth, the external installation dimensions

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