Inter Array Cable Rating – Considerations Beyond IEC standards

After the array-cable armour hang-off inside the wind turbine (WT), the three power phases are typically separated and laid in flat formation up to the cable terminations, where the screens are grounded. This phase separation alters the electromagnetic coupling between conductors and metallic screens, leading to an increase in conductor–screen mutual inductance compared to the three-core cable below the armour hang-off. If the metallic screens are electrically coupled through semiconductive outer jackets in the three core cable, this change in inductive coupling can give rise to additional circulating screen currents [1] in the region below the armour hang-off, resulting in localized additional losses that are not explicitly covered by