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Help Center35kv LW8-40.5 Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker
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SPECIFICATION
LW8-40.5 outdoor high voltage SF6 circuit breaker is a three-phase AC 50HZ outdoor high-voltage electrical equipment for control and protection of 35KV transmission and distribution systems, and can also be used to open and close contact breaker and capacitor banks occasions.
LW8-40.5- breaker equipped with CT14 spring operating mechanism.
Breaker in line with national GB1984-89 “AC high voltage circuit breakers” and the lnternational.
AMBIENT CONDITION
1. The altitude: under 1000-3000m
2. The ambient temperature: -30C--+40C, cold areas-40C;
3. Wind pressure :8 degree;
4. Earthquake intensity ≤ degree 8;
5. Flexible mounting site should not seriously affect the isolation switch insulation and conductivity of gases, vapors, chemical deposition, salt spray, dust and other explosive, corrosive substances;
6. Applies to serious contamination and pollution prevention areas, but should not have caused a fire and explosion and other substances;
MODEL IMPLICATION
TECHNICAL SPECIFICATION
Item |
Units |
Parameters |
|
Rated voltage |
KV |
40.5 |
|
Rated insulation level |
1min power withstand voltage |
KV |
95 |
Lightning impulse withstand voltage |
KV |
185 |
|
Rated current |
A |
1600/2000 |
|
Machanical life |
Time |
3000 |
|
SF6 gas rated pressure (when 20C the gauge pressure) |
Mpa |
0.45 |
|
Closure pressure (when 20C the gauge pressure) |
Mpa |
0.42 |
|
The lowest temperature |
C |
-30 |
|
Rated short-circuit breaking current |
KA |
20/25/31.5 |
|
Rated short-circuit closing current (peak) |
KA |
50/63/80 |
|
Rated short time withstand current (thermal current) |
KA |
20/25/31.5 |
|
Rated peak withstand current(dynamic current) |
KA |
63/80/100 |
|
Rated out of step breaking current |
KA |
63/80/100 |
|
Rated short duration |
S |
4 |
|
Closing time (rated operating voltage) |
S |
≤0.1 |
|
Operating time (rated operating voltage) |
S |
≤0.07 |
|
Rated operating sequence |
|
0-0.3s-C0-180S-CO |
|
Rated current opening and closing of a sing le capacitor combination |
A |
400 |
|
Weight of SF6 |
kg |
8/5 |
|
Circuit breaker weight (including the operating mechanism) |
kg |
1400/1000 |
|
OVERALL DIMENSION
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