**Brand: ROCKWILL** >66kV transmission substations, medium & small solar/wind farm booster stations, industrial heavy power supply, compact urban substations, projects where voltage measurement can be arranged externally.
With the development of the power industry, the miniaturization of power equipment is the trend of future development and also the urgent need of current power users. Miniaturized electrical equipment can not only save and and civil engineering costs, etc., but also reduce the use of greenhouse gas SF6, meeting the requirements of the environmental protection situation. Combining years of high-voltage electrical design experience and absorbing the world's most advanced technical design concepts, our company has developed the latest generation of gasinsulated metal composite combined electrical appliance (HGIS). This combined electrical appliance has a compact structure and is particularly suitable for urban and mountainous substations. It is also the best choice for the renovation of old substations. In addition, this product is also very suitable for 40.5kV digital substations and can be used as digital electrical equipment.RHP-72.5 is ROCKWILL segregated-tank hybrid gas insulated switchgear (HGIS) rated at 72.5kV, complying with IEC 62271-203, IEC 62271-100, IEC 62271-102, GB/T7674 and KEMA type tested. It adopts self-blast SF6 circuit breaker with bistable spring or spring-hydraulic operating mechanism. Available rated current:1600A,2000A,2500A,3150A; rated short-circuit breaking current:25kA,31.5kA,40kA. CB, DS, ES and CT are enclosed in separated SF6 metal tanks while main busbar uses air insulation. This standard version has no built-in PT; voltage transformer can be configured as optional RHP-72.5+PT variant. It features independent gas compartments, compact layout and factory pre-testing, widely used in 66kV transmission substations, renewable energy booster stations and urban power grid projects.
The voltage covers 40.5kV-145kV and is suitable for scenarios such as power plants, substations, railways, ports, etc. It is particularly suitable for space limited projects such as urban/mountainous substations, renovation of old stations, and rooftop/mobile substations.
The modular gas‑tank main units feature high reliability with up to 25‑year maintenance‑free service life. Annual SF₆ leakage rate ≤0.5%. Mechanical life reaches 6000 times. Only open‑type busbar part needs regular inspection. Overall maintenance workload is far lower than traditional AIS. For altitude over 1000 m or‑40 °C extreme cold area, please inform us for customized insulation or anti‑liquefaction measures.
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