Markets and Solutions

JDR delivered 11 x 66kV 800mm² Copper Wet-Design Dynamic Array Cables for the world’s largest floating offshore wind power plant with 11 turbines. The deployment followed extensive research, development, and validation testing, offering valuable insights into cable lifetime and advancing dynamic cable technology for future large-scale floating wind power plants.

JDR have successfully designed, manufactured and qualified a 66kV 1200mm² aluminium renewable energy cable with a water tree retardant insulation. This advancement enables JDR to support the increasing market demand for this product delivering large capacity, high quality power management cable systems.

JDR’S Next Generation Array Cable project aims to develop a fully qualified innovative 66kV 1200mm² copper static array cable, semi-wet design including Jointing technology. This coupled with the completed 66kV 1200mm² aluminium design delivers cable performance flexibility, a key enabler for the use of larger offshore wind turbines.

JDR secured a patent in the US, UK, Taiwan, and other countries for an innovative cable breakaway device, ensuring the safe disconnection of a cable from a floating turbine in emergency situations to safeguard offshore generation assets.

JDR supplied 66kV Wet Design array cables for the world’s largest offshore wind farm. The Offshore Test Team demonstrated the efficiency of JDR’s Resonant Testing System, saving significant time and money, and earning JDR a supplier award for exceptional performance.

JDR obtained a patent in the US, UK, and other countries for innovative cable technology addressing conductor and dielectric cross-section changes, with potential cost reduction for longer-length platform-to-platform cables.

JDR qualified and received type test approval for an 800mm² TiG welded aluminum conductor and an improved aluminum foil barrier layer jointing technology.

JDR provided three 66kV 185mm² Copper Wet-Design Dynamic Array Cables for the world’s largest floating offshore wind power plant in the deepest water. The Windfloat project marks the first offshore use of 66kV dynamic array cables.

JDR’s initial large-scale 66kV cable project featuring the first deployment of 66kV Wet-Design Cu.

JDR obtained a research grant to test distributed strain monitoring technology on a „Smart” cable. The research and prototype testing enhanced industry understanding of how optical fibers can provide valuable information on the environmental loading experienced by dynamic cables.

In an innovation competition, JDR received funding from the Carbon Trust to conduct a full system type test, showcasing their 66kV lead-free cable and connectors technology. The project was successfully completed ahead of the first 66kV array cable demonstration projects.

JDR provided their inaugural 66kV array cables for Vattenfall’s Aberdeen Bay demonstration project, among the first globally to employ 66kV as the array cable system voltage.

JDR received research funding from the UK Department of Energy and Climate Change (now DESNZ) to explore lead-free 66kV cable technologies. The aim was to reduce offshore wind costs and facilitate the use of turbines exceeding 6MW. JDR successfully conducted long-term water immersion testing and qualified the nextgeneration 66 kV array cables.

JDR provided their initial dynamic renewable energy cables for the Floatgen 2MW offshore test site near Brittany, France.

JDR qualified rigid repair joints and field-installable transition joints as a contingency measure in case of offshore cable damage during installation.

JDR introduced Aluminum Conductors and Coilable Roved Cables, revolutionizing Array Cable supply by enabling cable baskets. This innovation significantly reduced supply and installation costs, and enabled greater offshore flexibility compared to drum deployment.

To address the growing demand for larger turbines exceeding 3-4MW, JDR developed qualified factory flexible joints using induction brazing technology to accommodate increased power transmission and cable length.

JDR secured US and UK patents for their innovative hang-off termination unit, significantly reducing offshore cable installation and commissioning time.

JDR delivered 200km of 33kV copper cables (150 and 500mm²) connecting 175 turbines to the offshore substation for the world’s largest offshore windfarm at the time.

JDR provided 200km of 33kV copper cables (95, 185, and 400mm²) to connect 140 turbines in strings to the offshore substation. The Hartlepool factory has been opened, and its initial operations were dedicated to manufacturing cables for the Greater Gabbard project.

JDR supplied 3.5km of 33kV 70mm² copper cabling to connect two 5MW demonstration turbines to an oil and gas platform in 50m water depth. This project allowed JDR to enter the offshore renewable energy cable market leveraging their expertise in oil and gas technology.