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    The quality of survival, technology and development
    Quality for survival, technology for development
    SCHXGN15-12 type Air Insulated Ring Main Unit
    SCHXGN15-12 type Air Insulated Ring Main Unit
    SCHXGN15-12 type Air Insulated Ring Main Unit

    Description:

    SCHXGN15-12 type Air Insulated Ring Main Unit switchgear (Air Cabinet for short) is a metal-enclosed switchgear which uses FZN25-12 air-insulated vacuum load switch as the main switch. The whole cabinet is air-insulated, compact and expandable. The air cabinet can be combined freely according to different purposes to meet the requirements of end users or network nodes. At the same time, It can meet the needs of various power distribution openers, box substations, cable branch boxes. It’s Widely used in industrial and civil power ring networks and power supply terminals.

    Features:

    u High insulation and good environmental protection.

    u Constant pressure, particularly suitable for high altitude areas. Stronger environmental adaptability than SF6 Gas Ring Main Cabinet without special design.

    u Smaller size than traditional Ring Main Cabinet of the same voltage level. Compact and convenient for on-site assembly.

    u Complete mechanical interlock function, fully meeting interlocking protection requirements.

    u Compact size, easy to install and easy to operate with expandable modular combination. Choosing the best wiring scheme according to customer needs.

    u Side or side expansion depending on the installation location.

    u Configuring electric, remote control and monitoring devices with simulating the different needs of users.

    u Complete and reliable Five-protection system.

    Using environment:

    u Temperature: Min -25℃~Max+40℃;

    u Relative humidity: Daily average ≦95%; Monthly average≦90%;

    u Altitude: ≦3000m;

    u Shock level: Horizontal acceleration 0.4m/s2,Vertical acceleration 0.15m/s2;

    u Installation location: The place with no severe impact, serious pollution and chemical corrosion, no conductive dust and explosion risk.

    When the conditions of use exceed the above range, the user shall negotiate with us to determine the allowable range or take corresponding supplementary technical measures.

     

     

    Technical Parameters:

    Item

    unit

    Load switch

    Composite apparatus

    Circuit breaker

    Rated voltage

    KV

    12

    12

    12

    Rated frequency

    Hz

    50/60

    50/60

    50/60

    Rated current

    A

     

     

     

    Main bus

    A

    630

    630

    630

    Branch bus

    A

    630

    125(Depending on the rated current of the fuser)

    630

    Rated insulation level

    KV

     

     

     

    Power frequency withstand voltage (Phase to phase, Phase to ground)

    KV

    40

    42

    42

    Power frequency withstand voltage(Fracture)

    KV

    48

    48

    48

    Power frequency(Control and auxiliary circuit)

    KV

    2

    2

    2

    Lightning impulse withstand voltage(Phase to phase, Phase to ground)

    KV

    75

    75

    75

    Lightning impulse withstand voltage(Fracture))

    KV

    85

    85

    85

    Rated short-time withstand current(r.m.s)

    KA

     

     

     

    Main circuit

    KA

    20/3s

    -

    25/2s

    Ground loop

    KA

    20/25

    -

    25/2s

    Stable peak withstand current

    KA

    50

    -

    63

    Rated short-circuit closing current(peak)

    KA

    50

    80

    63

    Rated short-circuit breaking current

    KA

    -

    31.5

    25

    Rated take-over current

    A

    -

    1700

    -

     Rated active load breaking current

    A

    630

    -

    -

    Rated closed-loop breaking current

    A

    630

    -

    630

    Rated cable-charging breaking current

    A

    10

    -

    15

    IP grade

     

    IP3X

    IP3X

    IP3X

    Mechanical life

    Time

     

     

     

    Load switch

     

    5000

    5000

    10000

    Grounding switch

     

    3000

    3000

    3000


    Product details
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