ZN63(VBM7)-12 fixed indoor vacuum circuit breaker
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- Type: ZN63(VBM7)-12
ZN63(VBM7)-12 Indoor High Voltage Vacuum Circuit Breaker
Summary
VS1-12 side-mounted type vacuum circuit breaker is a kind of indoor high voltage switch device which is used in the AC Three-phase power system of frequency 50HZ,rated voltage 12KV to be the protection and control unit. Because of the special superiority of vacuum circuit breaker, especially suitable for applications that require frequent operation at rated operating Current or multiple open short-circuit breaking current location. It 1s especially suitable to the place requiring frequent operations.
VS1-12 side-mounted type vacuum circuit breaker adopts fixed installation, which is mainly used in the fixed switchgear. It can be used alone or used in ring network power supply system, box-type variable system and non-standard power supply system to protect and control the
Technical Specifications
| NO. | Item | Units | Parameters | |||
| 1 | Rated voltage | kV | 12 | |||
| 2 | Rated cu rrent | A | 630~1250 | 1250 | 1250 | |
| 3 | Rated short-circu it breaking cu rrent | kA | 20 | 25 | 31.5 | |
| 4 | Rated short-circu it closing cu rrent | kA | 50 | 63 | 80 | |
| 5 | Rated peak withstand cu rrent | kA | 50 | 63 | 80 | |
| 6 | 4S rated short-ci rcu it withstand current | kA | 20 | 25 | 31.5 | |
| 7 |
Rated insulation level |
1min power freq uency voltage | kV | 42 (fracture 48) | ||
| Lightning Impulse Withstand voltage (peak) | 75 (fracture 65) | |||||
| 8 | Rated operat i ng sequence | O－ 0.3S-CO-180S-CO | ||||
| 9 | Mechanism life | Times | 10000 | |||
| 10 | Opening times of rated short-circuit breaking current | Times | 50 | |||
| 11 | Rated operator closing voltage(DC) | V | AC/DC 220,110 | |||
| 12 | Rated operator open i ng voltage(DC) | V | AC/DC 220,110 | |||
| 13 | Clearance between open contact | mm | 11 ± 1 | |||
| 14 | Over-travel( Contact springcompression degree) | mm | 3.5 ± 0.5 | |||
| 15 | Three phase points, closing bounce time | ms | ≤2 | |||
| 16 | Contact closing bounce time | ms | ≤2 | |||
| 17 | Average opening speed | m/s | 1.1 ± 0.2 | |||
| 18 | Average closing speed | m/s | 0.6 ± 0.2 | |||
| 19 |
Operning time |
The highest operati n g voltage | s | ≤0.05 | ||
| The lowest operating voltage | ≤0.08 | |||||
| 20 | Closing time | s | 0.1 | |||
| 21 | Dynamic and static contact allowed to weara cumulative thickness | mm | 3 | |||
Model Implication
Overall Dimensions
