- Description
- Characteristic
- Parameter
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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.
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- VEP®circuit breaker is the third-generation indoor medium-voltage embedded pole vacuum circuit breaker with the most complete product specifications in the world.
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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.
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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.
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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.
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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.
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The VEP®circuit breaker adopts a modular spring operating mechanism featuring high reliability and easy maintenance.
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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.
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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.
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VEP®circuit breaker is equipped with a mechanical sensor, which can monitor the closing & opening stroke-time characteristics of the circuit breaker online;
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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.