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VEP Medium Voltage Embedded Pole Vacuum Circuit Breaker

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  • Description
  • Characteristic
  • Parameter
  • VEP®indoor medium-voltage embedded pole vacuum circuit breaker is the world's first full-series medium-voltage embedded pole vacuum circuit breaker developed by Xiamen Huadian Switchgear Co., Ltd. The voltage levels cover 12kV, 24kV and 40.5kV.VEP®vacuum circuit breaker adopts a high-performance, low-resistance vacuum arc-extinguishing chamber. After epoxy resin casting, it realizes full embedded pole insulation and is completely maintenance-free during its service life. 

    • VEP®circuit breaker is the third-generation indoor medium-voltage embedded pole vacuum circuit breaker with the most complete product specifications in the world.
    • The embedded pole of the VEP®circuit breaker encapsulates the ultra-low resistance type vacuum arc-extinguishing chamber and the primary circuit's main conductive parts in epoxy resin, which is suitable for bad working conditions. 

    • The application of the buffer layer in the embedded pole of the VEP®circuit breaker guarantees the reliability of the embedded pole in various operating environments.

    • The solid insulation of the embedded pole of VEP®circuit breaker has replaced the need for SF6 gas as external insulation to a certain extent, and is more eco-friendly. 

    • The application of VEP circuit breaker ultra-low resistance type vacuum arc-extinguishing chamber meets the requirements of high current VEP®for temperature rise and reduces power loss. 

    • The VEP®circuit breaker adopts a modular spring operating mechanism featuring high reliability and easy maintenance. 

    • The VEP®circuit breaker can remotely control the electric chassis through the SCADA system of the substation so that it can automatically switch on and off, and the substation can be unattended. 

    • The VEP®circuit breaker is equipped with a coil current sensor, which can monitor the closing and opening coil waveforms of the circuit breaker online. 

    • VEP®circuit breaker is equipped with a mechanical sensor, which can monitor the closing & opening stroke-time characteristics of the circuit breaker online;

  • Name

    Unit

    Data

    Rated voltage

    kV

    12

    24

    40.5

    Rated insulation level

    Power frequency withstand voltage of auxiliary circuit

    2

    short-duration power-frequency withstand voltage  (1min)

    42

    50/65**

    95#

    Lightning impulse withstand voltage (peak)

    75

    125

    185#

    Rated frequency

    Hz

    50

    50

    50

    Rated current

    A

    630 

    1250

    630

    1250

    630

    1250

     

    1250

    1600

    2000

    2500

    3150

    4000*

    1250

    1600

    2000

    2500

    3150

    4000*

    630

    1250

    1250

    1600

    2000

    2500

    3150

    4000

    630

    1250

    1250

    1600

    2000

    2500

    3150

    Rated short-circuit breaking current

    kA

    20

    25

    31.5

    40

    50

    25

    31.5

    40

    25

    31.5

    Rated short-time withstand current

    20

    25

    31.5

    40

    50

    25

    31.5

    40

    25

    31.5

    Rated short-circuit closing current (peak)

    50

    63

    80

    100

    125

    63

    80

    100

    63

    80

    Rated peak withstand current

    50

    63

    80

    100

    125

    63

    80

    100

    63

    80

    Duration of rated short-circuit current

    s

    4

    3/4**

    4

    Mechanical life

    Time

    30000

    20000

    20000

    20000

    Notes: * refers to the corresponding data of forced air cooling, # phase-to-phase withstand voltage is carried out in the supporting switchgear or in equivalent conditions with the switchgear.

    ** The values of 50kV and 3s are subject to IEC 62271-100: 2012.

Product:VEP Medium Voltage Embedded Pole Vacuum Circuit Breaker
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