The project: Network expansion Obfelden – Samstagern
With the expansion of the new Zurich power line, Swissgrid is setting a milestone for the region's energy supply. The Obfelden–Samstagern project is a major grid expansion undertaking in Switzerland and places the highest demands on safety, technology, and design. As a partner for innovative access solutions, Swissgrid ensures HighStep Systems to ensure that this state-of-the-art infrastructure is not only high-performing, but also state-of-the-art in terms of occupational safety and vandalism protection.
The region between the Affoltern district and Lake Zurich is one of Switzerland's most important economic hubs. To ensure the steadily growing energy demand in the greater Zurich area, Swissgrid is modernizing the existing transmission line between Obfelden and Samstagern.
Here All information is available directly from Swissgrid.
This project is far more than just a simple pipeline expansion:
- Voltage increase: The voltage will be increased from 150 kV to 220 kV to prepare the "Zurich power highway" for the future.
- Complex infrastructure: The project requires the construction of new masts, the relocation of existing lines, and the underground cabling of sections (such as on the Uetliberg).
- Impressive dimensions: The new masts reach heights of up to 85 meters. For comparison: That's almost the same height as Zurich's Grossmünster.
- Multimodal use: In some sections, the line shares the route with the SBB railway power lines, which places the highest demands on coordination and maintenance safety.
Dismantling of the old pipeline
The challenge: Focus on safety and acceptance
A project of this scale is subject to special public scrutiny. Swissgrid faces three key challenges here:
- Aesthetics in recreational areas: The route runs through sensitive landscape areas. Bulky fall protection solutions would disrupt the appearance of the modern, solid-walled steel masts.
- Security in residential areas: Since the masts are located close to residential areas and transport routes (A3), unauthorized access to the installations must be absolutely prevented.
- Occupational safety in extreme situationsMaintaining 85-meter-high masts in all weather conditions is a physical strain for the staff.
Construction of the new lines
Image source / Project data: © Swissgrid AG. All rights reserved.
The solution: HighStep Systems as a standard for modern networks
HighStep Systems provides the appropriate answer to these complex requirements for the Obfelden-Samstagern project (Zurich power motorway). Our system redefines access to high-voltage facilities:
1. Inherent safety (abuse protection)
Unlike lattice masts with climbing bolts or ladders with back protection, the HighStep rail offers no footholds for unauthorized persons. Ascent is only with authorized devices (the HighStep Lift or the HighStep Easy) is possible.
- Ergonomics and efficiency with the HighStep Lift
At high mast heights, time and force are crucial factors:
- Energy-saving ascent: The portable, battery-powered lift transports the technician to the traverse without physical effort.
- Increased concentration: Technicians arrive at their workplace at high altitude well-rested, which reduces the error rate and the risk of accidents during complex maintenance work.
- Material Transportation: Tools and equipment can be easily carried along, often eliminating the need for additional winch operations.
3. Minimalist design for maximum acceptance
The HighStep rail, made of high-quality aluminum, integrates seamlessly into the architecture of the new mast types. Its slim silhouette preserves the aesthetics of modern solid-web steel masts – an important argument in communication with residents and environmental groups.
4. Durability and maintenance-free operation
The rail itself is maintenance-free and extremely weather-resistant.
Conclusion: A partnership for the energy of tomorrow
The Obfelden – Samstagern project impressively demonstrates how modern infrastructure and innovative access solutions go hand in hand. HighStep Systems is proud to contribute to the security of supply in Switzerland – safely, efficiently and aesthetically.
If you would like to read more about the system and our products, there is here All important information.
