Product Overview: LW36-40.5KV SF6 Circuit Breaker
LW36-40.5 outdoor self-energy HV AC SF6 circuit breaker is an outdoor three-phase HV AC equipment used in electricity grids with altitudes of no more than 3000m, environment temperatures of no less than -40℃, local pollution classes of no higher than Class IV, and AC 50Hz/60Hz with maximum voltage of 40.5kv. it is suitable for the control and protection of HV supply and transformation lines in power station, converting stations, and industrial and mining enter-prises. it can also be used as a connection circuit breaker.
Specifications and Parameters:
| Name | Unit |
LW36-40.5(W)/ T2500-31.5H |
LW36-40.5(W)/ T2500-31.5 |
LW36-40.5(W)/ T2500-40 |
LW36-40.5(W)/ T4000-40 |
LW36-40.5(W)/ T4000-50 |
|
| Rated voltage | kV | 40.5 | |||||
| The altitude | m | ≤3000 | |||||
| The environment temperature | ℃ | -40℃ ～+55℃ | |||||
| Pollution level | / | Ⅳ | |||||
| The wind speed | m/s | 34 | |||||
| Earthquake resistant level | AG5 | ||||||
| Power frequency wihstand voltage,1min | To earth | kV | K*95 | ||||
| Across open breaks | 118 | ||||||
| Rated lighning impulse withstand voltage | To earth | K*185 | |||||
| Across open breaks | 215 | ||||||
| Rated Frequency | Hz | 50/60 | |||||
| Rated normal current | A | 2500 | 2500 | 2500 | 4000 | 4000 | |
| Rated short circuit breaking current | kA | 31.5 | 31.5 | 40 | 40 | 40 | |
| Rated short circuit duration time | s | 4 | |||||
| Coefficient of opening pole | / | 1.5 | |||||
| Electrical life | Times | 20 | |||||
| SF6 gas pressure (gauge pressure 20℃) | MPa |
0.5 (50Hz) 0.7 (60Hz) |
0.5 (50Hz) 0.7 (60Hz) |
0.6 | 0.6 | 0.6 | |
| Mechanical life | Times | 10000 | |||||
Notes:external insulation is corrected by altitude correcion coefficient K; altitude 2000m, K=1.13; altitude 3000m,K=1.28
Product Features:
LW36-40.5 self-energy HV SF6 circuit breaker is equipped with advanced hot-expansion plus auxiliary pressure gas self-energy arc extinguishing technology and matched with new-type spring actuating mechanism. it has features such as long electrical endurance, small operating power, high electrical and mechanical reliability, high technical parameters, and moderate price. lts main performance features are as follows:
(1)No-load line charging breaking ability and no-load cable charging breaking ability 50/60Hz dual-frequency C2,back-to-back capacitor bank breaking ability 50/60Hz dual-frequency C2, no re-breakdown;
(2) Strong external insulation ability, suitable for regions with 3000m of altitude or Class IV pollution.
High reliability of operating mechanism.
(1) Mechanical endu rance: separating and closing for 10000 times without replacing parts; can meet the user's requirement of continuous running and little maintenance.
(2) New type spring actuating mechanism has few components parts; overall high-strength cast aluminum frame and brake separating and closing spring; and centralized arrangement is adopted for the buffer, compact structure, reliable operation, low noise, and convenient maintenance; suitable for frequent operations.
All exposed parts are made of stainless steel materials or hot-galvanized on the surface for high corrosion resistance.
Reliable sealing structure ensures the product annual leakage rate≤0.5%.
We offer the most advanced engineering design solutions and product technology solutions to global power customers, and continue to create value for the commercial success of global power customers.
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