24kV SF6‑free dry‑air insulated ring main unit, rated current 630A, short‑time withstand current 20kA/3s, IAC AFLR 20kA/1s internal arc rating, modular compact switchgear for secondary distribution network.
This 2026‑version PDF product catalogue serves for tendering, distribution network project selection, pre‑sales technical evaluation and installation reference. The equipment complies with IEC standards and EU F‑gas Regulation (EU) 2024/573, adopting zero‑GWP dry air as insulating medium to realize SF6‑free eco‑friendly design.
This catalogue introduces product development background, service environmental conditions covering ‑40℃~+55℃ ambient temperature and maximum installation altitude up to 2500 m, structural features including modular expandable framework, fully‑sealed gas tank and rotating three‑position switch.
It records comprehensive electrical performance, partial discharge below 5pC, mechanical endurance class M2 up to 10000 operations, anti‑corrosion surface treatment, optional active arc‑suppression device, downstream earthing‑switch safety design and IEC 61850 communication compatibility.
It supports multiple module combinations, keeps consistent installation dimensions and operation mode with traditional SF6‑type cabinet, and provides outline drawings, multi‑module variant parameter tables and after‑service instructions. Please contact us for editable CAD drawings and complete type‑test reports.
Pay attention to operating temperature range, maximum installation altitude derating, and ambient corrosive‑gas limits. Special modification is required beyond standard conditions. Please contact us for environment‑adaptation guidance.
The active arc‑suppression unit rapidly detects and quenches internal arc faults, preventing dangerous gas ejection from cabinet housing. Please contact us for function parameter sheet.
It uses zero‑GWP dry air as insulating medium, complies with EU F‑gas regulation, avoids greenhouse‑gas emissions and supports high recyclability at end‑of‑life. Please contact us for eco‑solution introduction.
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