LW58A Outdoor HV AC SF6 Circuit Breaker
LW58A dead tank circuit breakers are outdoor high-voltage transmission equipment with three-phase high-voltage AC frequency of 50Hz/60Hz, which can be used for the control and protection of high-voltage transmission lines such as power plants, substations, industrial and mining enterprises, and can also be used as contact circuit breakers.
Contacts are high temperature resistant and abrasion resistant
High product reliability
Stable breaking performance
Reliable sealing performance
IEEE
IEC
Energy Storage
Power
Features
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01
Contacts are high temperature resistant and abrasion resistant
Moving and static arc contacts adopt the structure of copper tungsten sintered as a whole, which is high temperature resistant, with small abrasion loss under the action of arc, and has a full capacity of 20 times of opening and closing;
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02
High product reliability
The operation power is small, the product reliability is high, the mechanical edurance is 10000 times
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03
Stable breaking performance
The arc extinguishing chamber adopts self-energetic pressurised gas double-acting structure, and the valve piece of the arc extinguishing chamber adopts special zinc-based alloy, which is high-temperature resistant and light in weight. The opening performance is stable and reliable.
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04
Reliable sealing performance
SF6 year leakage rate is much less than 0.1%.
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
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