Theelectricalinterfacesamongthecomponentscomprisingtheauxiliarypowersystemsandtheirelectricalinterfacewithothertrain-bornesystemsaredescribed.Assuch,thisstandardtreatstheauxiliarypowersystemcomponents(e.g.,staticinvertersandconverters,low-voltagedcpowersupplies,back-upbatterysystems,andbat