Wind and solar farms have become an integral part of the European landscape. They play a crucial role in the energy transition from fossil to sustainable energy. As in existing networks, cable joints are indispensable for the safe and efficient distribution of generated power. After all, the cable network is only as strong as its weakest link.

When investing in cable joints, it’s not just about price, but above all about reliability and longevity. How resilient is the product to technical challenges? How easy is the assembly? And what about the availability of materials?

Sustainable networks: additional challenges

Cable grids in wind and solar farms are similar to regular grids, but face unique challenges. Think of bi-directional heavy loads and high-frequency harmonics. Harmonics – multiples of the standard frequency (50 Hz) – cause thermal, mechanical and electrical effects that affect the lifespan of components. You can read more about this in our technical paper: “The future challenges for cable accessories in medium voltage networks”.

Why quality is crucial

The construction of a sustainable energy park is a complex project with many stakeholders. Components must function without interference and have a long service life. The connection of a wind turbine or solar panel should never be up for discussion. Only then will the objectives of investors be achieved.

Advantages of liquid silicone insulation

Cable joints with liquid silicone insulation offer maximum protection against fluctuating loads and high temperatures. This technology suppresses partial discharges such as corona and has a low dissipation factor, ideal for harmonic pollution networks. Crimping technology, on the other hand, is less resistant to thermal stress and can cause failure more quickly.

Ease of installation counts

Underground cable connections require craftsmanship. Due to scarcity in the labor market, ease of installation is more important than ever. Cable joints that are easy to install win out over labour-intensive techniques. Solutions that do not require critical tools such as gas burners are becoming increasingly popular.