| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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Live Tank SF6 outdoor type circuit breaker finds its universal range of application for the three-phases electrical system with alternating current 50HZ and the rated voltage 40.5kV.It is used for controlling and protecting the electrical system and measuring the current transformers.
Sunshine :1000W/m2;
Relative humidity: daily average: no more than 95%; Monthly average: No more than 90%
Wind speed: no more than 34m/s;
Earthquake resistance: horizontal acceleration :0.250g; Vertical acceleration :0.125g
Pollution level: Level 1 (25mm/kV):
Ice thickness :10mm(when the wind speed is not more than 15m/s) 1
Protection level :IP5XW.
Live Tank SF6 circuit breaker is an outdoor porcelain pillar structure, equipped with CT35 spring operating structure, and the mechanism and body are arranged in "T" shape. The whole machine is small in size, light in weight, simple in structure, small in operation, and convenient in installation and debugging. Mechanical life 10000 times, suitable for frequent operation;
Compressed gas interrupter, excellent breaking performance, electric life up to 20 times;
Reliable sealing performance, static seal adopts "O" type sealing ring structure, dynamic seal adopts "V" type sealing ring with spring pressure compensation structure. The secondary terminal board of the transformer is produced by pressure injection technology, which has strong anti-aging performance and ensures that the annual gas leakage rate is less than 0.5%.
The installation frame and support are made of the whole steel plate, with high strength standard parts and high mechanical reliability;
The internal or external current transformer metering core is made of microcrystalline alloy with high magnetic permeability, and the accuracy level can reach 0.2 or 0.2s. Each phase of the product can be equipped with 2-4 current transformers.
| Name | Unit | Data | |
| Rated voltage | kV | 40.5 | |
| Rated current | A | 1600/2000 | |
| Rated Insulate level |
Power frequency withstand voltage1min | kV | 95 |
| Thunder impulse withstand voltage | 185 | ||
| Rated short-circuit breaking current | kA | 25/31.5 | |
| Rated out-of-phase breaking current | kA | 7.9/10 | |
| breaking current of earth fault in different phase | kA | 27.4/34.8 | |
| Rated breaking current of single capacitor bank | A | 400 | |
| Rated Operating sequence | O-0.3S-CO-180S-CO | ||
| Rated SF6 gas pressure | Mpa | 0.5 | |
| Switch-off time(on rated voltage) | ms | 30≤t≤40 | |
| Switch-on time(on rated voltage) | ms | 60≤t≤80 | |
| Rated shot-circuit making current(peak) | kA | 63/80 | |
| Rated short-circuit duration | s | 4 | |
| Rated short-circuit with stand current | kA | 25/31.5 | |
| Rated peak value withstand current | kA | 63/80 | |
| Mechanical life | time | 10000 | |
| Cumulative breaking times of rated short-circuit breaking 20 current 31.5 kA/40kA |
time | 20 | |
| Cumulative breaking times of rated current | time | 2000 | |
| Annual leakAge rate of SF6 | % | ≤0.5 | |
| Water content of SF6 | (VV)(PPm) | ≤150 | |
| Outer insulating leakAge ratio distance | mm/kV | ≥25,≥31 | |
| Weight of the circuit breaker | kg | 1000 | |
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