| Breaking Capacity: | High Voltage Circuit Breakers |
|---|---|
| Operation: | Manual Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | SF6 |
| Installation: | Fixed |
| Structure: | Lw8-40.5 |
| Customization: |
|---|
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1. LW8A-40.5 Type live tank 33kv 36kv SF6 Circuit Breaker
LW8A-40.5 Type live tank 33kv 36kv SF6 Circuit Breaker Is three-phases electrical system with alternating current 50HZ and the rated voltage 40.5kV.It is used for contolling and protecting the electrical system and measuring the current transformers.
2. Advantages
1.It conforms to GB1984 standard,GB/T28001-2011 idt OHSAS18001:2007,GB/T 24001-2004 idt ISO14001:200;
2.Frequent operation, each set can be installed with 12 current transformers;
3.The new sf6mkz pointer type densitometer, the pressure gauge reading is not affected by the temperature change.
3. Environmental Conditions
The daily average saturated vapor pressure: ≤2.2KPa;
The monthly average value: ≤1.8KPa.
Altitude: ≤3000m
Seismic intensity: ≤8
Air pollution level: Level
Ambient temperature: -30°C~+40°C
Relative humidity: ≤95%or≤90%
Wind pressure: ≤700pa
The installation shall be free from fire, explosion, severe vibration, chemical corrosion and serious pollution.
4. Technical Parameter
| Name | Data | |
| Rated voltage | 40.5 | |
| Rated current(A) | 1600/2000 | |
| Rated Insulate level | Power frequency withstand voltage(kV)1min | 95 |
| Thunder impulse withstand vltage (kV) | 185 | |
| Rated short-circuit breaking current(kA) | 25/31.5 | |
| Rated outof-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 short-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 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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