Customization: | Available |
---|---|
Type: | Circuit-Breaker |
Structure: | Fixed Board |
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Serial number | Project | Units | Date | |||
1 | The rated voltage | kV | 12 | |||
2 | Rated frequency | Hz | 50 | |||
3 | Rated current | A | 630~1250 | 1250 | 1250 | |
4 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 | |
5 | Rated short circuit closing current | kA | 50 | 63 | 80 | |
6 | Rated peak tolerable current | kA | 50 | 63 | 80 | |
7 | 4S rated short circuit resistance current | kA | 20 | 25 | 31.5 | |
8 | Rated insulation level | Power frequency withstand voltage (before and after rated break) | kA | 42 (fracture48) | ||
Impact withstand voltage (before and after rated break) | kA | 75 (fracture85) | ||||
9 | Rated sequence of operation | points-0.3s-us points-180s-us points | ||||
10 | Mechanical life | next | 10000 | |||
11 | Rated short circuit breaking current breaking times | next | 50 | |||
12 | Operating Mechanism Rated Closing Voltage (DC) | V | 110,220 | |||
13 | Rated tripping voltage of operating mechanism (DC) | V | 110,220 | |||
14 | From contact | mm | 11±1 | |||
15 | Overstock (compression length of contact spring) | mm | 3.5±0.5 | |||
16 | Three-phase points, closing bounce time | ms | ≤2 | |||
17 | Contact closing bounce time | ms | ≤2 | |||
18 | Average brake speed | m/s | 1.1±0.2 |
19 | Average closing speed | m/s | 0.6±0.2 | |||
20 | Break-brake time | At the highest operating voltage | S | ≤0.05 | ||
At the lowest operating voltage | S | ≤0.08 | ||||
21 | Closing time | S | 0.1 | 50 | ||
22 | Main loop resistance of each phase | μΩ | 60 | |||
23 | Allowable wear cumulative thickness of dynamic and static contacts | mm | 3 |
THE USE OF CONDITIONS |
1. The environment temperature: upper limit +40ºC, lower limit-15ºC: (Allow storage at-30ºC) |
2. Altitude: no more than 2000m |
3. Relative humidity: daily average value is not greater than 95%, the monthly average is not greater than 90% |
4. Saturated steam pressure: daily average value is not higher than 2.2x10-3 Mpa |
5. monthly average is not higher than 1.8x10-3 Mpa |
6. Earthquake intensity does not exceed 8 degrees |
7. No fire, explosion, pollution, chemical corrosion and severe vibration place |