1.LW8-40.5 SF6 Heavy Duty High Voltage Circuit Breaker
Lw8-40.5 product has excellent crushing performance. Using compressed air arc chamber, long electrical life. It can continuously break 40ka short circuit current 20 times at rated voltage without maintenance or replacement of hydrogen sulfide gas. High mechanical reliability, mechanical life more than 6000 times, can be frequently operated; Each device can be equipped with 12 current transformers for customer's choice. The product uses the new mkzm SF6 pointer densitometer, the pressure gauge reading is not affected by temperature changes, easy to use.
2. Technical Data
| No. |
Item |
Unit |
Data |
| 1 |
Rated voltage |
KV |
40.5 |
| 2 |
Rated current |
A |
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 |
3.Environmental Condition
- 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
4.Essential details
Model Number:LW8-40.5 Breaking Capacity:20KA
Rated Voltage:40.5KV Rated Current:1250A
Material:Stainless Steel Mechanical Life:2000 Times
characteristic:SF6 circuit breaker Application::High Voltage
Pole:3pole Type:High Voltage
Poles Number:3 Rated Frequency:50Hz
5. FAQ
1. All our activities are accredited to ISO 14001:2015 and IEC standard.
2. Technology ensure the quality satisfy international request.
3．Generally we promise one - two years quality guarantee, some products will be extended longer time for life span.
4. For tender cooperation, it is welcome to discuss the detail in between.
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Customized LW8-40.5 33 Kv SF6 Circuit Breaker Control Protection Images
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