| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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SF6 live tank Circuit Breaker outdoor sf6 circuit breaker 126kv using SF6 gas as arc extinguishing and insulating medium, using the most advanced self-energy arc extinguishing technology in the world, equipped with a new type of spring operating mechanism, it has the characteristics of long electrical life, low operating power, low noise and high reliability.
Altitude: ≤3000m.
Ambient temperature: -30ºC ~ +40ºC.
Pollution grade: Class II, Class III, Class IV.
Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90% (25ºC).
Wind pressure: not more than 700Pa (equivalent to 34m/s).
There are no inflammable substances, explosion hazards, chemical corrosion and violent vibration
The product has excellent breaking performance, adopts pressure type arc extinguishing chamber, short arc time, long electrical life, and continuously breaks 31.5kA short circuit current up to 21 times without maintenance and without replacing sulfur hexafluoride gas; High mechanical reliability.
Mechanical life of more than 3000 times; Can be frequently operated, each set can be installed 12 current transformers, for users to choose.
| Name | Unit | Data | |
| Rated voltage | KV | 40.5 | |
| Rated insulation level | Withstand voltage of 1min power frequency | KV | 95 |
| Lightning shock resistance (peak) | |||
| Rated current | A | 185 | |
| Mechanical life | Times | 1600/2000 | |
| Rated pressure of sulfur hexafluoride (gauge pressure at 20C) | Mpa | 3000 | |
| Locking pressure (gauge pressure at 20ºC) | Mpa | 0.45 | |
| Minimum operating temperature | ºC | 0.42 | |
| Rated short circuit breaking current | KA | -30 | |
| Rated short circuit shut-off current (peak) | KA | 20/25/31.5 | |
| Rated withstand current in short circuit (heat stable current) | KA | 63/80 | |
| Rated peak withstand current (dynamic stable current) | KA | 35/31.5/100 | |
| Rated out-of-step breaking current | KA | 63/80/100 | |
| Rated short circuit duration | S | 4 | |
| Closing time (at rated operating voltage) | S | ≤0.1 | |
| Switching time (at rated operating voltage) | S | ≤0.07 | |
| Rated operating sequence | 0-0.3-C0-180S-CO | ||
| Rated open and close current of a single capacitor bank | A | 400 | |
| Weight of sulfur hexafluoride gas | Kg | 8/5 | |
| Weight of circuit breaker (including operating mechanism) | Kg | 14000/1000 | |
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