VD4/S adopts stored‑energy spring mechanism supporting auto‑reclosing, mechanical life 10 000‑15 000 operations, optional manual/motor charging, various releases and auxiliary switches. It complies with IEC 62271‑100, IEC 60694, also meets VDE and GB1984‑2003 requirements.

This oil‑immersed voltage regulator adopts ONAN cooling, on‑load tap‑changer with battery backup, Auto‑Local‑Manual operation mode and comprehensive alarm signal outputs. It complies with IEC 60076‑1/5/7/10/21, IEC 60137 and other standards, suitable for C5 high atmospheric corrosivity environment.

SM66‑24 features compact 450‑mm‑width cabinet, visible double isolation breaks, modular five‑anti‑interlock & emergency unlock. IP67 gas‑tank with annual leakage ≤0.01%, dry‑air insulation and good mechanical endurance, complying with relevant IEC & GB RMU standards.

SF6 Gas insulated Ring Main Unit features compact 500‑mm‑width cabinet with SF₆ gas insulation. Innovative design for vacuum interrupter & disconnector solves high‑current temperature‑rise issue. Modular five‑anti interlock with lower‑door emergency unlock, lower‑door only opens with fully‑earthed main‑circuit, complying with IEC & GB RMU standards.

RPS is stainless‑steel‑tank SF6‑insulated pole‑mounted load break switch with manual / motor operation, compatible with distribution‑automation controller, complete protection‑measurement‑event‑recording functions, IP67 mechanism box for wide‑temperature & high‑altitude harsh‑environment, complying with relevant IEC load‑switch standards and supporting custom full‑set solutions.