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LW58 Live Tank Circuit Breaker
LW58 live tank circuit breaker features strong environmental adaptability, high reliability, and maintenance-free operation. Rated voltage 252kV. Provides three-pole intertripping & pole-discrepancy operation solutions. Suitable for high-voltage power transmission and distribution applications such as substations.
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Superior Interrupting Performance
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Proven Mechanical Durability
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Long-Term Sealing Integrity
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Exceptional Environmental Adaptability
Product Highlights
Superior Interrupting Performance
Employs self-energy & assisted compression arc-extinguishing technology. Delivers robust interrupting capability across the entire series (up to 50kA), suitable for diverse complex operating conditions.
Proven Mechanical Durability
Utilizes 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.
Long-Term Sealing Integrity
Adopts diaphragm sealing structure. SF₆ gas leakage rate ≤0.05% per year.
Exceptional Environmental Adaptability
Suitable for areas with harsh environmental conditions (such as severe pollution, frequent fog, hail, etc.), high-altitude areas, high-altitude regions, and earthquake-prone areas, etc
Technical Specification
Rated Voltage
252kV,420kV,550kV
Rated Frequency
50/60Hz
First-Pole-to-Clear Factor
1.3/1.5
Rated Current
Up to 5000A
Rated Short-Circuit Breaking Current
Up to 63kA
Rated Short-Circuit Making Current
Up to 158kA
Rated Short-Time Withstand Current
Up to 63kA
Rated Peak Withstand Current
Up to 158kA
Rated Short-Time Withstand Current Duration
3s
Rated Operating Sequence
O-0.3s-CO-3min-CO
Mechanical Endurance
10000 times
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