AN EXPERIMENT ON INTERSTRAND COUPLING CURRENTS IN SOLDERED CABLES

the Netherlands. Abstract: The interstrand coupling currents may in many cases produce the major part of the loss in cables subject to AC fields or carrying an AC transport current. In this paper the effective frequency dependent transverse resistivity experienced by the coupling currents is studied in an experimental way. The results are compared with simple mathematical considerations. An accompanying effect is a transverse magnetization of the cable strands due to the transverse current. This magnetization produces in the time dependent case eddy currents along the strands which enhances the effective AC transverse resistivity. The mathematical considerations include the dependency of the total loss as a function of ~ i ~ , 2 ~~~t arrangement with 6 parallel wires divided frequency and the twist length of the wires. in 32 parts. Also the pick up coil for B, is shown in part