The VEP indoor solid-embedded vacuum circuit breaker is the world’s first full-range solid-embedded vacuum circuit breaker developed by Xiamen Huadian Switchgear Co., Ltd., covering voltage ratings of 12kV, 24kV and 40.5kV.

Featuring high-performance, low-resistance vacuum interrupters, the VEP vacuum circuit breaker achieves fully solid-embedded insulation after epoxy resin casting, and is completely maintenance-free over its service life.

Rated Voltage: 12 kV, 17.5 kV, 24 kV, 40.5 kV

Rated Insulation Level (Unit: kV)

• Auxiliary Circuit Power Frequency Withstand Voltage: 2 kV
• Power Frequency Withstand Voltage (1min):

• 12kV: 42 kV
• 17.5kV: 42 kV
• 24kV: 50/65 kV**
• 40.5kV: 95 kV

Lightning Impulse Withstand Voltage (Peak):

• 12kV: 75 kV
• 17.5kV: 95 kV
• 24kV: 125 kV
• 40.5kV: 185 kV

Rated Frequency:

• 12kV: 50 Hz
• 17.5kV: 50/60 Hz
• 24kV: 50 Hz
• 40.5kV: 50 Hz

Rated Current (Unit: A)

• 12kV: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A*, 5000A*
• 17.5kV: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A*
• 24kV: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A*
• 40.5kV: 1250A, 1600A, 2000A, 2500A, 3150A, 4000A*

Rated Short-Circuit Breaking Current (Unit: kA)

• 12kV: 20kA, 25kA, 31.5kA, 40kA, 50kA
• 17.5kV: 31.5kA, 40kA
• 24kV: 25kA, 31.5kA, 40kA
• 40.5kV: 25kA, 31.5kA, 40kA

Rated Short-Time Withstand Current (Unit: kA)

Rated Short-Circuit Making Current (Peak, Unit: kA)

• 12kV: 50kA, 63kA, 80kA, 100kA (125kA), 125kA (150kA)
• 17.5kV: 80kA, 100kA
• 24kV: 63kA, 80kA, 100kA
• 40.5kV: 63kA, 80kA, 100kA

Rated Peak Withstand Current (Unit: kA)

Rated Short-Circuit Current Duration (Unit: s)

• 12kV: 4s
• 17.5kV: 3s
• 24kV: 3/4s**
• 40.5kV: 4s

Notes:

• For forced air cooling conditions. Phase-to-phase voltage shall be applied in matching switch cabinets or under conditions such as switch cabinets.
  ** 50kV and 3s are implemented in accordance with IEC 62271-100 standard.