CIGRE TB 862 is the recognized qualification standard for dynamic cables in floating offshore wind. Qualification to it means the cable design has completed a defined program of electrical, mechanical, and fatigue testing, with the results verified by Bureau Veritas as an independent third party.

The qualified design is a three-core, double-armored, double-sheathed copper cable rated to 38/66 (72) kV at 50 or 60 Hz, with a maximum conductor temperature of 90° C, water depths to 350 meters, and a 25-year service life.

Static inter-array cables in fixed-bottom offshore wind rest on the seabed and move very little. A dynamic inter-array cable connects floating turbines that move continuously with wind, wave, and current, so it must withstand tension, compression, bend-radius, and fatigue loading over its full-service life.

A qualified cable has already been proven against defined requirements, so if a client elects to do a project-specific fatigue test, it is for confirmation rather than discovery. That removes a first-of-a-kind unknown from the critical path, reduces the chance of late-stage redesign, and gives technical authorities, insurers, and lenders documented evidence when assessing project risk.

The 66kV DIAC is manufactured at TechnipFMC's umbilical facility in Newcastle, UK, which has decades of dynamic umbilical manufacturing experience and supports UK supply chain and regional employment.

Water Column iEPCI is TechnipFMC's integrated engineering, procurement, construction, and installation model for floating offshore wind. It treats the full vertical system — including DIACs, mooring systems, anchors, and offshore installation — as a single co-engineered scope under one accountable team.