Product Overview: LW58A-40.5/72.5/145 Dead Tank Circuit Breaker
W58A-40.5/72.5/145 Dead Tank circuit breaker is a new generation of outdoor high-voltage electrical equipment developed independently.The tank type circuit breaker is composed of the entrance bushing, lead out bushing, CT, arc extinguishing chamber, chassis, operating mechanism, etc. It can be used in the high-cold and high-altitude area, At present, the new generation of tank type LW58A-40.5/72.5 products have reached the leading domestic and international advanced level in advanced technology and quality reliability.
Specifications and Parameters:
| Name | Unit | Data | |||
| Rafed vollage | kV | 40.5 | 72.5 | 145 | |
| The altitude | m | ≤5000 | |||
| The environment temperature | ℃ | -40℃~55℃ | |||
| Pollution level | / | IV | |||
| The wind speed | m/s | 34 | |||
| Earthguake resislant level | / | AG5 | |||
| Power frequency withstand voltage,1min | To earth | kV | 95 | 160 | 275 |
| Across open breaks | 118 | 160+42 | 315 | ||
| Rated lighning impulse withstand voltage | To earth | 185 | 380 | 650 | |
| Across open breaks | 215 | 380+59 | 750 | ||
| Rated Frequency | Hz | 50 | 50/60 | 50 | |
| Rated normal current | A | 2500/2500-4000 | 2500/3150/4000 | 3150 | |
| Raled short circuit breaking current | kA | 31.5/40 | 40 | 40 | |
| Rated short circuit duration time | s | 4 | |||
| Coefficient of opening pole | / | 1.5 | 1.3/1.5 | 1.3/1.5 | |
| Electrical life | Times | 22 | |||
| SF6 gas pressure (gauge pressure 20℃) | MPa | 0.45 | 0.4 | 0.6 | |
| Mechanical life | Times | 10000 | |||
Product Features:
Design of an arc extinguishing chamber
Horizontal Structure, it adopts thermal expansion and auxiliary pressure gas extinguishing technology, which has small operation work,excellent breaking performance and more than 20 electrical life.
Environment adaptability:
It is suitable for severe environment conditions (such as severe pollution, water fog, hall, etc.), high - altitude area, high altitude area, earthquake area, the box body is sealed with air bag type, and the body protection grade is iP66.
The CT of variable ratio and multi-level combination can be attached, high accuracy, easy to add capacity, and meet 80% of the operating frequency voltage under the value of 5Pc, can be configured with TPY.
Complete CT protection measures:
CT shell is sealed at both ends of the shell and has special anti-condensation design.
The light spring operating mechanism adopts the overall cast aluminum frame. Breaking spring , closing spring and buffer are arranged in a centralized manner, and all adopt spiral double pressure spring, compact structure, not easy to fatigue.
The product is small, with integrated design, integrated supply, integrated installation conditions.
With the breaking capacity of the 4000A back-to-back capacitor bank.
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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