GPVN 36kV 40.5kV Insulating Sleeve Vacuum Circuit Breaker
GPVN-40.5kV indoor vacuum circuit breaker is a product designed and produced by our company and Xi’an High-voltage Electric Apparatus Institute. The VCB is of rated voltage 40.5kV, three-phase and AC 50/60Hz. It applies to mining firms, power house and substation acting as protection and control electric apparatus. It is also applicable in occasions with frequent operation.
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GPVN-40.5kV indoor vacuum circuit breaker is a product designed and produced by our company and Xi’an High-voltage Electric Apparatus Institute. The VCB is of rated voltage 40.5kV, three-phase and AC 50/60Hz. It applies to mining firms, power house and substation acting as protection and control electric apparatus. It is also applicable in occasions with frequent operation.
| Rated voltage | 36/38/40.5kV |
| Rated frequency | 50/60Hz |
| Rated current | 630~2500A |
| Power frequency withstand voltage (1min) | 95kV (118, isolating distance) |
| Lightning impulse withstand voltage (peak) | 185kV (215, isolating distance) |
| Rated short-circuit breaking current | 20, 25, 31.5kA |
| Rated short-circuit making current (peak) | 50, 63, 80kA |
| Rated short-time withstand current (4s) | 20, 25, 31.5kA |
| Rated peak withstand current | 50, 63, 80kA |
| Rated breaking current of capacitor bank | 400A |
| Breaking times of rated short circuit breaking current | 30 times |
| Mechanical life | 10000 times, 20000 times (for magnet type) |
| Compliance | Meets international safety standards such as ISO, IEEE |
The arc-extinguish chamber is on the upper part and the mechanism is on the lower part. This structure is convenient for debug.
Complex insulating structure using air and organic material. Compact dimension and small weight.
Vacuum arc-extinguish chamber of Cutler-Hammer Company (USA) and domestic ZMD are both applicable for the VCB. Both two kinds of chambers extinguish arc by vertical magnetic field and featuring with low cut-off and good on-off capability with asymmetry.
Simple spring operation mechanism is free from maintenance within 10000 times of operations.
Lead-screw propeller, easy and stable operation and good self-locking capability.
| Altitude | 1000m (Standard); can be up to 4500m for special ordering |
| Ambient temperature | -25℃ ~ +45℃ |
| Relative humidity | Daily average ≤ 95%; monthly average ≤ 90% |
| Earthquake intensity | ≤ 8 degree |
| Applicable occasions | Must be free from inflammables, explosives, corrosive substances and severe vibration |
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