LW58A Outdoor HV AC SF6 Circuit Breaker
LW58A Outdoor High-voltage AC SF₆ 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.
Compact design
High reliability
Superior interrupting performance
Excellent sealing performance
IEEE
Features
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01
Compact design
Integrated with external CT, reduced product footprint, low center of gravity, and excellent seismic performance.
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02
High 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.
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03
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.
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04
Excellent sealing performance
Employs diaphragm sealing structure. SF₆ gas leakage rate ≤0.05% per year.
Technical Specifications
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Rated voltage（kV）
40.5, 72.5, 126, 145, 252, 363, 420, 550, 800
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Rated frequency（Hz）
50/60
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First-pole-to-clear Factor
1.3/1.5
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Rated current(A)
Up to 6300
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Rated short-circuit breaking current(A)
Up to 63
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Rated short circuit making current (peak)(kA)
Up to 171
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Rated short-time withstand current(kA)
Up to 63
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Rated peak withstand current(kA)
Up to 171
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Rated short circuit making current (peak)(kA)
Up to 4
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Rated operating sequence
O-0.3s-CO-3min-CO
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Mechanical edurance(times)
10000
Downloads
There are 3 files in total
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