ELECTRICAL-DISCHARGE-INHIBITING CONFORMABLE LAYER FOR USE IN INNER-COOLED COILS

摘要

A conformable layer ( 14 ) for inhibiting electrical discharge between vent tubes ( 16 ) and strands ( 12 ) in an inner-cooled coil ( 5 ). The conformable layer comprises a resistive inner core ( 24 ) and a conductive strip ( 20 ) wrapped in a conductive outer wrap ( 26 ). The conductive strip ( 20 ) is electrically connected to the strands ( 12 ) at one end of the coil ( 5 ) and left to electrically float at the other end. In this configuration, the conformable layer ( 14 ) reduces voltage buildup between the vent tubes ( 16 ) and the strands ( 12 ) to help prevent electrical damage to the coil ( 5 ).