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RHP-145+PT Hybrid Gas Insulated Switchgear
Drawings · ROCKWILL

RHP-145+PT Hybrid Gas Insulated Switchgear

**Brand: ROCKWILL** >132kV transmission substations, solar/wind farm booster stations, urban power grid, projects requiring bay-side voltage measurement without separate outdoor PT.

Updated2026.09
LanguageEnglish
FilePDF · 282.8 KB
Hybrid Gas Insulated Switchgear

Document description

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-145+PT is ROCKWILL segregated-tank hybrid gas insulated switchgear (HGIS) rated at 145kV, complying with IEC 62271-203, IEC 62271-100, IEC 61869 and KEMA type tested. It adopts self-blast SF6 circuit breaker with bistable spring or spring-hydraulic operating mechanism. Available rated current:2000A,2500A,3150A; rated short-circuit breaking current:31.5kA,40kA,50kA. Differing from standard RHP-145, this version integrates PT (voltage transformer) inside the SF6 tank alongside CB, DS, ES and CT, while main busbar uses air insulation. It provides integrated voltage & current signals for metering, protection and synchronism check. Widely used in 132kV transmission substations, renewable energy booster stations and urban power grid projects requiring bay voltage measurement

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Frequently asked questions

  1.  Land saving: 40% -60% footprint savings compared to AIS;
  2. Cost advantage: 30% lower than GIS investment and 45% -50% lower than total investment;
  3. Less maintenance: 25 years maintenance free, mechanical lifespan of 6000 times;
  4. Environmental Protection: SF6 usage is only 20% of GIS, with an annual leakage rate of ≤ 0.5%.
  1. Full digitalization: Information collection, transmission, and processing are all digital, with fiber optic cables replacing cables;
  2. High compatibility: Following the IEC 61850 standard, devices are interconnected and interoperable;
  3. Easy to expand: New features do not require modification of existing devices, only need to be connected to the network.

It fully complies with IEC international standards. Adopts optimized electric field design with partial discharge ≤3pC, standardized long-life spring mechanism (6000 cycles), and complete five-prevention mechanical interlock system to eliminate misoperation risks. Annual SF6 leakage rate ≤0.5%, ensuring stable and safe grid operation.

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