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FEP Indoor Medium-voltage SF6 Circuit Breaker

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  • Description
  • Characteristic
  • Parameter
  • FEP-40.5 SF6 circuit breaker is the latest generation of SF6 circuit breaker developed with mature and reliable SF6 breaking technology. It fully meets GB, DL, IEC and other relevant domestic and international standards.The boundary dimensions of FEP-40.5 circuit breaker are exactly the same as those of VEP-40.5 circuit breaker of the same model. There is no need to make any changes between the two. It can be interchanged with AMS switchgear and can be easily and reliably cooperated with the mainstream 40.5kV centrally installed and floor-mounted switchgear on the market.

  • FEP SF6 circuit breaker has a good function of breaking capacitive current.
    FEP SF6 circuit breaker has good SF6 gas insulation characteristics.
    FEP SF6 circuit breaker features high safety. Because the internal arc-extinguishing chamber of the FEP-40.5 circuit breaker is operated at low pressure, although the gas compression and heat increase during the operation of the circuit breaker will cause the internal pressure rise, it is still in a relatively low pressure gas state.
    FEP SF6 circuit breaker is equipped with a safety film to ensure that all accidental abnormal over-pressures can be released, although this will not happen.
    FEP SF6 circuit breaker is equipped with SF6 low pressure alarm auxiliary switch to ensure that the circuit breaker can work under normal pressure.
    FEP SF6 circuit breaker has an auto-reclosing function. The auto-reclosing sequence is: opening - 0.3s - closing & opening -180s - closing & opening.
    FEP SF6 circuit breaker is a maintenance-free circuit breaker. All three poles are designed to be maintenance-free and do not need to be disassembled during the service life. All maintenance work is simply a matter of filling the operating mechanism with lubricating oil.
    FEP SF6 circuit breaker can be of centrally installed or floor-mounted type, which is very convenient, flexible and easy to install in various types of mainstream switchgear on the market.
    The boundary dimensions of FEP SF6 circuit breaker are exactly the same as those of VEP-40.5 circuit breaker and can be interchanged when matching with AMS switchgear.
    FEP SF6 floor-mounted circuit breaker can be easily and safely installed in the mainstream 40.5kV floor-mounted removable switchgear on the market.
  • Items

    Unit

    Data

    Rated voltage

    kV

    40.5

    Rated frequency

    Hz

    50

    Rated power frequency withstand voltage (1min)

    kV

    95

    Rated lightning impulse withstand voltage (peak)

    kV

    185

    Rated current

    A

    1250/1600/2000/2500

    Rated short-circuit breaking current

    kA

    31.5

    Rated short-time withstand current

     

    31.5

    Rated peak withstand current (peak)

     

    80

    Rated short-circuit closing current (peak)

     

    80

    Rated cable charging breaking current

    A

    50

    Rated back-to-back capacitor breaking current

    A

    1250

    Rated duration of short-circuit current

    s

    4

    Rated operation sequence auto-reclosing

     

    O-0.3s-CO-180s-CO

    Rated operating voltage

    V

    AC220/110、DC220/110

    Mechanical life

    time

    10000

    Pollution grade

    Grade Ⅱ

    Electromagnetic compatibility

    Grade Ⅲ Severe Degree

    SF6 gas rated pressure (gauge pressure at 20℃)

    MPa

    0.45±0.01

    Alarm pressure (gauge pressure at 20℃)

     

    0.4±0.01

    Annual gas leakage rate

    %

    ≤0.1

    Gas moisture content (20°C)

    μL/L

    ≤150

Product:FEP Indoor Medium-voltage SF6 Circuit Breaker
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