AGS Gas-Insulated Switchgear
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Product Details
As the mainstream gas-insulated switchgear solution in the medium-voltage segment, AGS—thanks to its modular design and superior space utilization—perfectly meets the growing demands for compactness and intelligence in medium-voltage distribution networks. Compared with conventional outdoor‑mounted medium-voltage switchgear, AGS also retains the key advantage of gas‑insulated equipment: immunity to harsh environmental conditions such as outdoor dust, humidity, and salt spray. Whether deployed in urban underground switchgear cabinets, mountainous wind‑farm step-up substations, or coastal photovoltaic power‑distribution stations, it ensures long‑term, stable operation. In recent years, guided by the dual‑carbon goals, leading domestic power‑equipment manufacturers have introduced eco‑friendly AGS products that replace traditional sulfur hexafluoride with low‑global‑warming‑potential insulating gases. These solutions maintain robust insulation performance and operational reliability while significantly reducing the product’s full‑life‑cycle carbon footprint, fully aligning with the requirements of green power infrastructure development. With the ongoing modernization of domestic distribution networks and the rollout of new‑infrastructure projects such as 5G base stations and data centers, AGS market penetration continues to rise, and it is poised to play an increasingly vital role in ensuring the safe and reliable operation of medium‑ and low‑voltage distribution systems.
Related Products
GIS circuit breakers are typically operated by hydraulic, pneumatic, or spring‑actuated mechanisms, while disconnect switches and earthing switches are generally driven by pneumatic, manual, electric, or electric‑spring actuators. In transmission lines, GIS serves both control and protection functions, making it one of the most critical pieces of power transmission and distribution equipment. With advantages such as compact size, minimal footprint, ease of installation and construction, immunity to external environmental conditions, safe and reliable operation, flexible configuration, simple maintenance, and long overhaul intervals, GIS has gradually replaced air‑insulated and oil‑less alternatives. It is now widely deployed in power grids at 72.5 kV and above, particularly gaining widespread adoption in hydropower substations and urban distribution substations. Moreover, GIS has become the preferred choice for ultra‑high‑voltage transmission and transformation equipment. As urban development expands in scale and pace, and in response to the needs of railway infrastructure, GIS is also finding practical applications in the medium‑voltage sector.
DSC High-Voltage Disconnect Switch
Reliable contact structure: spring‑pressed sliding contacts ensure self‑cleaning and self‑locking during closing, withstanding a 31.5 kA/3 s short‑circuit current; low and stable loop contact resistance. Double‑column, centrally interrupted, hot‑dip galvanized steel base; insulators are adjustable for leveling; standard 90° opening and closing stroke; excellent mechanical stability. Safety interlock: integrated hard‑mechanical interlock with the earthing switch, completely preventing erroneous live‑earth connections; available in male/female contact configurations for earthing. Universal mounting: compatible with rectangular and circular reinforced‑concrete poles; vertical drive shaft can be segmented to suit different installation heights; supports both electric and manual operating mechanisms. Easy maintenance: standardized disassembly and assembly procedures, accompanied by a comprehensive lubrication plan; three‑level periodic maintenance schedule; contacts and transmission components can be replaced individually. Complete protection: factory‑applied protective coating on conductive surfaces; optional anti‑condensation heating for the mechanism; all components resistant to outdoor weathering and corrosion.
