String Fittings up to 1.200 kVrn
Precision, that connects
More than standard: taylor-made one-stop solutions
At Mosdorfer, suspension and tension strings are not off-the-shelf products—they are the result of a deep understanding of the requirements of modern overhead line projects. Whether for extreme climates, high mechanical loads, or special network configurations: We develop and manufacture complete string fittings that are precisely tailored to our customers’ needs.
Our strength lies in the combination of decades of experience, state-of-the-art forging technology, and an engineering team that doesn’t just deliver products, but thinks in terms of solutions. Every string is tested in our own laboratory and has proven itself in use worldwide—under real-world conditions, not just on paper.
The associated fittings are designed to withstand the highest mechanical and electrical demands. They are easy to install, corrosion-resistant, and harmonize perfectly with conductors and insulators—for a durable, secure connection.
Stainless steel string fittings
Corrosion Protection at the Highest Level
Mosdorfer is a pioneer in the development and manufacture of stainless steel string fittings – specifically designed for extreme environmental conditions such as industrial areas or salty coastal regions. Our stainless steel fittings are the answer to the growing demand for durable insulator strings with the highest corrosion resistance.
At our Austrian forging center of excellence, we shape high-performance austenitic and duplex stainless steels using state-of-the-art technology—completely ferrite-free. Because this is the only way to achieve true corrosion protection.
What makes our stainless steel fixtures special:
- Ferrite-free manufacturing using our own stainless steel tools
- Clean processes thanks to closed transport and storage containers
- High-precision heat treatment using pressure furnaces and gas quenching
- Surface finishing through blasting and passivation for maximum durability
25 years of experience – 100% quality. Stainless steel is not inherently corrosion-free. Only with the right expertise and controlled processes can internal crystalline corrosion be prevented. Mosdorfer has been setting the standard in this field for over two decades.
HVDC Solutions
For the energy transmission of tomorrow
The demands on modern power grids are growing—due to the expansion of renewable energy, increasing cross-border interconnection, and the need for efficient energy transmission over long distances. HVDC technology offers significant advantages in this regard:
Unlimited connectivity:
HVDC enables the flow of electricity across national borders—even between asynchronous grids with different frequencies.
Perfect for renewable energies:
Wind and solar farms are often located far from population centers. HVDC efficiently delivers the energy to where it is needed.
Less space required:
Single-pole DC systems require less space—which saves costs and minimizes the impact on the landscape.
Efficient over long distances:
Lower line losses make HVDC the ideal solution for transmission lines longer than 1,000 km—at voltages up to 800 kV.
Future-proof technology for global power grids
High-voltage direct current (HVDC) technology is transforming the way electricity is transmitted over long distances—making it more efficient, more stable, and more sustainable. Mosdorfer provides the right solutions for this: durable, low-maintenance components for demanding DC applications worldwide.
HVDC-Expertise
Our experts develop customized solutions for the specific requirements of DC insulators – both electrical and mechanical.
Innovative Corona Protection
Custom-designed corona rings with larger radii and smooth surfaces prevent partial discharges and extend service life.
Corona-Free Mounting
Special clamps made of aluminum alloys ensure a secure, long-lasting attachment—even under high temperatures and loads.
Solutions for Extreme Environments
Whether in the desert, along the coast, or in industrial areas—we offer insulator strings with increased creepage distance and corrosion-resistant fittings.
Protection Against Vibrations
Our specially developed damping systems protect conductors from wind-induced damage—even in bundled DC configurations.
Experience that builds trust
Mosdorfer has been active in the HVDC sector for over 20 years, with projects in New Zealand, China, Sweden, Germany, Canada, and Norway. Our solutions are in use worldwide and set the standard for quality and innovation.
Would you like to learn more about our products? Be sure to visit the following product pages:
Damping Systems
Our custom-designed damping systems – ranging from vibration dampers to damping spacers – reliably protect cables against wind-induced vibrations, partial-field vibrations, and cable sway. Using state-of-the-art simulations, field tests, and real-time measurements, we develop solutions that are precisely tailored to your infrastructure.
Line Accessories
In addition to its core portfolio, Mosdorfer offers practical system solutions that make overhead power lines even safer and more reliable. These solutions protect against phase collisions, improve visibility for air traffic, and ensure the safe distribution of power in low- and medium-voltage systems.
