Nexans is offering a new range of cable and power accessories to meet the growing demand for higher capacity windfarms. The new generation of power accessories with F-type outer cone comprising separable T-connectors, coupling connectors, and surge arresters has been developed to operate at 72.5 kV.
To transmit the increased power between each individual turbine and collection platforms efficiently, Nexans has created inter-array cable systems able to operate at 72.5 kV instead of the traditional 36 kV. Transformer and switchgear OEMs have upgraded their designs to take into account the higher voltage.
As renewable energy becomes more prevalent, economic power supply becomes increasingly important. There is now a new common standard for offshore wind connection systems up to 72.5 kV.
The standardized interface between power accessories and equipment bushings is a first in the field of this voltage class. Unlike traditional connection solutions, separable, compact T-shape connectors can offer many advantages. The outer cone standard allows several combinations of cable arrangements such as single connection, double connector arrangement with coupling connector, and double connector arrangement with surge arrester.
All of Nexans power accessories up to 72.5 kV are type tested according to IEC 60840. Equipment bushings by Euromold are additionally type tested according to IEC 60137. Both, separable connectors and bushings are tested according to IEC 60068 successfully (solar radiation IEC 60068-2-5 and salt mist IEC 60068-2-52).
All kits of Nexans connectors, terminations, and joints include conductor contacts using patented GPH mechanical connection technology, which is type tested according IEC 61238-1. GPH mechanical connectors and cable lugs are compatible with aluminum and copper conductors of the most designs.
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