This document describes dead‑tank SF₆ circuit‑breaker complying with IEC 62271‑100 international standard for high‑voltage AC circuit‑breakers. It fully covers structural‑working principles, operating‑environment requirements, scope of supply, packaging‑transport‑storage guidance, on‑site installation‑commissioning procedures, periodic maintenance & overhaul criteria and decommissioning instructions.
The equipment adopts earthed metal modular tank‑type construction, integrates through‑core built‑in current transformers and self‑energy arc‑extinguishing technology, fitted with spring operating mechanism equipped with both mechanical and electrical anti‑pumping protection. Delivered as a complete factory‑assembled unit without requirement for on‑site gas‑chamber disassembly.
It supports indoor, outdoor and rooftop deployment for power‑plant, substation and heavy‑industry power‑transmission projects. The manual also includes SF₆ gas property appendix, step‑by‑step installation workflow, commissioning‑inspection check‑items, graded maintenance schedule and overhaul trigger conditions, together with delivery‑document checklist.
Service boundaries including altitude, temperature‑humidity, seismic acceleration and pollution class are clearly stated. Complete‑unit replacement helps minimise outage duration during repair, delivering comprehensive technical reference for specification, site construction and daily operation‑maintenance.