The SF6 gas circuit breaker outdoor high voltage LW36-126 uses SF6 gas as both the insulating and arc-extinguishing medium, the is suitable for utility substations, power-plant switchyards, renewable-energy grid connections, transformer bays, industrial power systems, and transmission-network expansion projects.
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It is normally applied in nominal 110kV networks. The 126kV designation represents the rated or highest equipment voltage of the circuit breaker.
A self-energy breaker uses thermal and pressure energy generated during interruption to assist the SF6 gas flow that extinguishes the arc. This reduces the amount of energy required from the operating mechanism.
It can be used to protect transmission lines, power transformers, busbars, incoming feeders, outgoing feeders, and other equipment within a suitably designed 110kV substation.
Automatic reclosing capability depends on the rated operating sequence, mechanism, control system, protection relay, and project requirements. The required reclosing cycle must be included in the inquiry.
A density-monitoring device normally provides indication and staged alarm or lockout contacts. Final alarm settings and control logic are confirmed for the selected design.