Product Overview
To meet the increasing voltage requirements of new energy wind farm systems, Juhonkia has independently developed two types of gas-insulated switchgear (GIS) products that can be installed inside wind turbine towers: the environmentally friendly ZF□-72.5kVGIS.
The ZF □ -72.5kV GIS combines clean air insulation with vacuum arc extinguishing technology, ensuring no greenhouse gas emissions or leakage throughout its entire lifecycle. Its application in wind farms fully aligns with the eco-friendly principles of wind power as a clean energy source.
Technical parameters

The product is designed for 72.5kV high-voltage applications, meeting the voltage requirements of modern wind farm power collection and grid connection systems. It is suitable for projects using higher voltage collection systems to reduce cable losses and improve power transmission efficiency.
The compact gas-insulated structure is suitable for wind turbine tower installation and space-limited renewable energy projects. Compared with conventional air-insulated switchgear, GIS can reduce installation space and provide better protection for high-voltage components.
The switchgear uses clean air as the insulating medium. This helps avoid the environmental concerns associated with SF6 gas and supports wind power projects that require greener electrical equipment. The target page also states that the product ensures no greenhouse gas emissions or leakage throughout its lifecycle.
Vacuum arc extinguishing technology provides reliable switching and fault interruption performance. It also supports environmentally friendly insulation design because the arc extinguishing function does not depend on SF6 gas.
The product is designed for installation inside wind turbine towers. This helps simplify wind farm electrical layout, reduce external equipment footprint, and improve the integration level of wind power systems.
The sealed GIS structure helps reduce the impact of external environmental factors such as dust, humidity, salt spray, and condensation. This is important for offshore wind farms, coastal wind farms, and remote wind power projects where maintenance access is limited.
Traditional GIS commonly uses SF6 gas as the insulation medium. SF6 has strong insulation performance, but it is also a greenhouse gas. For renewable energy projects, especially wind power projects, many buyers now pay more attention to the environmental impact of electrical equipment.
Clean air GIS uses natural-origin insulating gas combined with vacuum circuit breaker technology. This helps avoid SF6 leakage risk and supports more sustainable grid equipment. Siemens Energy’s Blue GIS portfolio also emphasizes clean air insulation and vacuum switching as an SF6-free solution for gas-insulated switchgear.
For wind power applications, clean air GIS is a better match for the environmental positioning of renewable energy projects. It supports cleaner power generation not only at the generation side, but also in the electrical distribution and switching equipment used inside the wind farm.
Juhonkia can provide project-based support for ZF□-72.5kV Compact Gas Insulated Switchgear. According to wind farm design requirements, the GIS can be configured for different installation layouts, feeder arrangements, monitoring requirements, and environmental conditions.