I have to find the inductance of a DC busbar system used in an aluminum smelter. Looking from far it may be seen as a rectangular loop. Looking close to the rectifier output area, it is a complex 3D system of busbars. These may be connected into loops if a short circuit occurs. Can FastHenry calculate inductance of such a system. I am not a user yet, but I will become one if FastHenry can calculate such systems. Has anybody done this kind of problem?