Dead-tank SF₆ circuit-breaker: 145-170kV, standard rated normal current for transmission-substation networks. Lightning impulse, short-time withstand and making current match respective voltage classes for load & fault interruption.
Dead‑tank type with pure‑spring operating‑mechanism, built‑in CT, self‑energy arc‑extinguishing, three‑phase post‑porcelain‑insulator and pointer density‑relay for good seismic performance. All design & type‑tests comply with IEC, CEI, GB, JB, DL; custom‑manufacturing & tailor‑made solutions are available.
120kV 168kV 204kV Tank Type Vacuum Circuit Breaker (VCB): Versatile high-voltage VCBs covering 120kV/168kV/204kV, delivering reliable SF₆-free switching for power transmission networks.
145kV dry air insulated dead tank VCB, SF₆-free, vacuum arc-extinguishing, reliable for power transmission & substation applications.
36kV 72.5kV Dead Tank Vacuum Circuit Breaker: Reliable SF6-free VCBs with dry air insulation, suitable for 36kV/72.5kV medium-voltage power grids.
It adopts pure spring operating mechanism, no hydraulic oil or compressed‑air supply required, featuring simple structure, high reliability and convenient maintenance.
Dead‑tank construction realizes low‑center‑of‑gravity layout with excellent seismic performance, and allows integration of built‑in current transformers within the unit.
It applies mature self‑blast self‑energy arc‑extinguishing principle, which lowers operating‑power requirement and improves reliability of fault‑current interruption.
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