Going with the wind

“When our clients decide to raise the bar on cable specifications, tough testing can lead to new breakthroughs."   

   Going with the wind

 
 

Going with the wind

Going with the wind

Going with the wind

 


 

Whirling dervishes

WINDLINK™ MV-RS (N)TSCGEHXOE cable is a medium-voltage (up to 20/35 kV) 3-phase power cable with earth conductor to connect the transformer in wind turbine nacelle to a switchgear at ground level.

 

Hanging loose

Over a distance of about 20 meters, just underneath the nacelle, this cable hangs free to allow the nacelle to rotate several turns in either direction. Since towers can be over 100 meters high, below the hanging part, the cable is then fixed to the wall. Flexible free-hanging cables can bear a tensile load of 600 kg, operate down to -40°C and are highly resistant to both oils and coolants.


 
Wet and dry

WINDLINK™ can be used in all large wind turbines requiring MV connections, and are suitable for both onshore and offshore windfarms.

 

Out in the cold

The MV-RS specification was co-developed with a wind turbine producer, who not only requested standard dimensional, material and electrical tests, but also 10 new ageing tests, and a punishing cold torsion test: +/- 100° torsion applied to one meter over 5,000 cycles at -40°C. Common compounds are not able to survive this cold test, so together with Nexans NRC we developed a new compound which passed all tests with flying colors. After qualification, a Production Part Approval Process (PPAP) was set up, including risk analysis, process flow charts, gauge consistency and reproducibility.

 

Handy kits

Apart from the cable, Nexans offers accessories and kitting, meaning that lengths can be ordered with pre-terminations on one or both sides. Due to the high specification level, WINDLINK™ cables should also appeal to other OEMs.