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Vacuum Circuit Breaker(VCB)12KV 24KV 36KV ZN12-40.5 indoor vacuum circuit breaker

ZN12-40.5 indoor medium voltage vacuum circuit breaker
the circuit breaker for the ceramic structure, using the longitudinal magnetic field contacts, is small, the proliferation of breaking arc generated when current distribution in the contact on the same local melting phenomenon does not occur, but also has a low arc energy voltage (20-200V) and low chopping current (4-5A).

    Product Description

    ZN12-40.5 indoor vacuum circuit breaker

    ZN12-40.5 indoor medium voltage vacuum circuit breaker

     ZN12 (ZN72) -40.5 Indoor Vacuum Circuit Breaker 35KV three-phase AC 50HZ applied to power system,the circuit breaker for the ceramic structure, using the longitudinal magnetic field contacts, is small, the proliferation of breaking arc generated when current distribution in the contact on the same local melting phenomenon does not occur, but also has a low arc energy voltage (20-200V) and low chopping current (4-5A), and operate with high reliability organizations. 

     

    The circuit breaker with spring energy storage sector, can exchange energy storage, or DC operation, can also be used manually. The circuit breaker uses a special contact material, so interrupter high breaking capacity, and has a long electrical life.

     

    The switch of simple structure, open high capacity, long life operation of fully functional no explosion risk, maintenance is simple, suitable for power plants, substation control and distribution system, protection switching, particularly suitable for heavy duty and frequent breaking operation place.Can be used in the fixed ark XGN17-40.5, also can be in XGN2-40.5 type switchgear. 

     

    Product feature 

    1, ambient air temperature: cap + 40 °C, the minimum - 10 °C, high altitude to 25 °C

    2, altitude, 1000 m;

    3, relative humidity, daily average no greater than 95%; On the average no greater than 90%; (+ 25 °C); Saturated vapor pressure: daily average no greater than 2.2 x 10-3 mpa, on the average no greater than 1.8 x 10-3 mpa,

    4, vibration f: earthquake intensity is not more than 8 degrees; 5, does not apply to inflammable and explosive dangerous, chemical etching and the site of violent vibration.

     

    Technical specifications

    No

    Item

    Unit

    Technical parameters

    1

    Rated voltage

    KV

    40.5

    2

    Rated current

    A

    1250

    1600

    2000

    3

    Rated short-circuit   breaking current

    KA

    20

    31.5

    25

    31.5

    4

    Dynamic current (peak)

    KA

    50

    80

    63

    80

    5

    4S thermal current

    KA

    20

    31.5

    25

    31.5

    6

    Rated short circuit   making current (peak)

    KA

    50

    80

    63

    80

    7

    Rated short-circuit   current breaking times

    Time

    20

    8

    Rated operating   sequence

     

    0-03s-Co-180s-Co

    9

    Rated insulation level

    1min power frequency   withstand voltage

    KV

    95

    Lightning impulse   withstand voltage (peak)

    185

    10

    Mechanical life

    Time

    10000

    11

    Rated single capacitor   device ON-OFF current

    A

    630

    12

    Rated single   back-to-back capacitor device current

    A

    400

    13

    Rated voltage   electrical energy storage

    V

    AC,DC 110 220

    14

    Energy Storage Power   Rating

    W

    275

    15

    Electrical Energy   Storage Energy Storage time

    S

    ≤15

    16

    Hop Tripping coil   rated voltage

    V

    AC,DC 110 220

    17

    Hop Tripping coil   rated current