E-mail: info@kf-elec.com
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LW8A-40.5 Type 12kv 24kv 33kv Outdoor Sf6 Circuit Breaker is an outdoor device used in AC 50HZ three-phase 40.5KV power system. It is applicable to locations that need frequent operating in rated current or under repeatedly on/off short circuit current. Containing the current transformer for measurement and protection, it can directly replace SW2-35 less oil circuit breaker and various types of oil circuit breaker with transition bracket. It can also be used as a tie breaker and switching capacitor group situations with CT14 type spring mechanism.
Ambient temperature:-30℃~+40℃
Altitude:≤3000m
Wind pressure:≤700Pa
Relative humidity:daily average relative humidity: ≤95%;monthly average relative humidity≤90;daily average saturated vapor pressure ≤2.2KPa;monthly average value ≤1.8KPa
Air pollution level:Ⅲ
Earthquake intensity:≤8 degree
The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution
| No. | Item | Unit | Data | |
| 1 | Rated voltage | KV | 40.5 | |
| 2 | Rated current | A | 1600，2000 | |
| 3 | Rated frequency | HZ | 50 | |
| 5 | Rated short circuit breaking current | KA | 31.5 | |
| 6 | Rated short-circuit current (peak) | KA | 50 | |
| 7 | Rated short-circuit withstand current | KA | 20 | |
| 10 | Rated short circuit closing current(peak) | KA | 50 | |
| 13 | Electrical life of rated short circuit breaking current | times | 30 | |
| 14 | Rated short circuit duration | s | 4 | |
| 15 | Rated line charging close current | A | 31.5 | |
| 16 | Rated operation sequence | O-0.3s-CO-180s-CO | ||
| 17 | Split time | ms | ≤60 | |
| 18 | Closing time | ms | ≤100 | |
| 19 | Velocity of rigid composite | m/s | 3.2 | |
| 20 | Velocity of rigidity | m/s | 3.4 | |
| 21 | Mechanical life | times | 6000 | |
| 24 | Quality of each circuit breaker | kg | 1400 | |
