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ZN63(VS1)-24 Indoor High Voltage Vacuum Circuit Breaker

The ZN63(VS1)-24 Series is a 24kV indoor vacuum circuit breaker for 50Hz three-phase AC systems. Designed for power stations, substations, and industrial use, it ensures reliable control and protection for power distribution. It features spring-operated mechanism with AC/DC or manual options, and a long-life permanent magnetic actuator (60,000 operations) is available. Suitable for high-altitude and frequent operation environments, it offers flexible fixed or handcart configurations.

    Technical specification

    NO.

    Item

    Units

    Parameters

    1

    Rated voltage

    kV

    24

    2

    Rated frequency

    Hz

    50

    3

    Rated current

    A

    630

    1250

    1600

    4

    Rated short-circuit breaking current

    kA

    20

    25

    31.5

    5

    Rated short-circuit closing current(peak)

    kA

    50

    63

    80

    6

    Rated short-circuit duration

    S

    4

    7

    Rated short-circuit breaking current breaking times

    Times

    20

    8

    Rated operating sequence

     

    O-0.3s-CO-180s-CO

    9

    Rated lightning impulse withstand voltage(fracture)

    kV

    125

     

    1 min power frequency withstand voltage(fracture)

    kV

    65

    10

    Closing time

    ms

    ≤100

    11

    Opening time

    ms

    ≤50

    12

    Mechanical life

    Times

    20000

    13

    Rated storage and operation voltage

    v

    ~220/110(AC/DC 220/110)

    14

    Breaking life

    ms

    ≤65

    15

    Energy storage time

    s

    ≤10

    Product Model

    5.jpg

    Dimension

    4.jpg

    Product Functions

    ◆Circuit Control & Protection: Provides comprehensive control and protection for transmission and distribution systems in power stations and industrial facilities.
    ◆Frequent Operation Handling: Engineered for applications requiring frequent switching, especially in demanding industrial environments.
    ◆Dual Operation Modes: Spring energy storage mechanism supports AC/DC electric operation and manual operation for flexibility.
    ◆Extended Mechanical Life Option: Available with long-life permanent magnetic actuator rated for 60,000 mechanical operations for ultra-frequent duty cycles.
    ◆Flexible Configuration: Designed with repackable front/rear structure for use as fixed installation unit or with chassis as handcart mounted unit.

    Applicable Environment

    ◇Temperature Range: Reliable operation in ambient temperatures from -15℃ to +40℃.
    ◇Installation Altitude: Designed for elevations up to 1000 meters.
    ◇Humidity Tolerance: Withstands daily average humidity ≤95% and monthly average ≤90%.
    ◇Seismic Resistance: Capable of withstanding earthquake intensity up to 8 degrees.
    ◇Air Quality: Suitable for locations free from corrosive gases, flammable vapors, and significant pollution.

    Product Highlights

    ◆High Altitude Specialization: Specifically engineered for important high altitude installations, making it ideal for mountainous regions and elevated substations.
    ◆Flexible Handcart & Fixed Configurations: Innovative repackable front/rear structure allows conversion between fixed installation and handcart mounted unit, maximizing application versatility.
    ◆Multiple Operation Modes: Spring energy storage mechanism accepts AC or DC power for electric operation, with manual backup capability ensuring functionality during power outages.
    ◆Comprehensive Standards Compliance: Manufactured in accordance with GB1984-2003 and relevant IEC standards, ensuring reliable performance and international acceptance.
    ◆Reliable Interlock Function: Built with reliable interlock mechanisms for operator safety and prevention of maloperation.