vacuum arc-extinguishing chamber for telemecanique low voltage contactor
Product Detailed
1.vacuum interrupter7.2kv,250~630A
2.IEC62271-200 standard
3.Free painting
4.Oxygen-free copper ring transition in sealing
vacuum arc-extinguishing chamber for telemecanique low voltage contactor
| Main Technical Data | ||
| Rated voltage | kv | 7.2 |
| Rated current | A | 250/400/630 |
| Rated frequency | Hz | 50 |
| Rated short-time power frequency withstand voltage(1min) | kv | 32 |
| Rated lighting impulse withstand voltage | kv | 65 |
| Rated making current | kA | 2.5/4.0/6.3 |
| Rated breaking current,max | kA | 2.0/3.2/5.0 |
| Rated breaking current,min | kA | 50/80/125 |
| Rated breaking current,limit | kA | 2.5/4.0/6.3 |
| Rated short-time withstand current | kA | 2.5/4.0/6.3 |
| Rated duration of short-circuit | s | 4 |
| Mechanical life | times | 30×10000 |
| Electricity life AC-3 | times | 25×10000 |
| Electricity life AC-4 | times | 10×10000 |
| Rated contact stroke | mm | 6±1 |
| Contact closing force due to bellows and atmosphere | N | 70±30 |
| Counterforce at rated contact stroke | N | 110±40 |
| Circuit resistance at rated contact atmosphere force | μΩ | ≤60 |
| Shelf life | years | 20 |
| Contact erosion limit | mm | 3 |
| Weight of moving parts | kg | ≤0.6 |
| Mechanical Data Required For Matched Vacuum Switchgear | ||
| Average opening speed | m/s | 0.6±0.2 |
| Average closing speed | m/s | 0.3±0.1 |
| Added contact force | N | 110±10 |
| Contact bouncing duration at closing operation | ms | ≤2 |
| Contact bouncing bank amplitude of opening operation | ms | ≤2 |
| Three-pole simultaneity | ms | ≤1 |
| Note:Rated characteristics can be given on requirment |
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