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LW58A Dead Tank Circuit Breaker
LW58A dead tank circuit breaker features strong environmental adaptability, high reliability, and maintenance-free operation. With a rated voltage covering 40.5-800kV, it provides three-pole intertripping & pole-discrepancy operation solutions. Suitable for high-voltage power transmission and distribution applications including substations and distribution networks.
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Optimized Equipment Footprint
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Engineered for Long-Term Reliability
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Superior Interrupting Performance
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Optimized Sealing Performance
Product Highlights
Optimized Equipment Footprint
Integrated with external CT, reduced product footprint, low center of gravity, and excellent seismic performance.
Engineered for Long-Term Reliability
Adopts a new integrated die-cast aluminum base spring operating mechanism. Compact structural design ensures stable output performance, high reliability, and maintenance-free operation. Mechanical life meets M2 class requirements.
Superior Interrupting Performance
Utilizes dual-motion self-energy & assisted compression arc-extinguishing technology. Delivers strong interrupting capability across the entire series (up to 63kA), suitable for diverse complex conditions.
Optimized Sealing Performance
Employs diaphragm sealing structure. SF₆ gas leakage rate ≤0.05% per year.
Technical Specification
Rated Voltage
40.5kV,72.5kV, 126kV, 145kV, 252kV, 363kV, 420kV, 550kV, 800kV
Rated Frequency
50/60Hz
First-Pole-to-Clear Factor
1.3/1.5
Rated Current
Up to 6300A
Rated Short-Circuit Breaking Current
Up to 63A
Rated Short-Circuit Making Current (Peak)
Up to 171kA
Rated Short-Time Withstand Current
Up to 63kA
Rated Peak Withstand Current
Up to 171kA
Rated Short-Time Withstand Current Duration
4s
Rated Operating Sequence
O-0.3s-CO-3min-CO
Mechanical Edurance
10000 times
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