DC voltage interface standards for naval applications

MIL-STD-1399-300 and MIL-STD-1399-680 have established AC voltage interface requirements for U.S. naval surface ship electrical power systems. No such interface standards have been established for DC interfaces on U.S. naval surface ships. This paper provides recommendations for specific standard DC interface voltages for naval surface ship applications. These standard interface voltages are intended to facilitate the development and integration of DC loads. In recommending Interface Standards, the following were considered: · Existing commercial and military interface standards should be used to the maximum extent practical. · Different standard voltage levels should differ significantly (greater than 25%) · Higher voltages enable lower currents, and lighter cables. · Standard voltage ratings of available semiconductor devices and insulation ratings should be considered. In addition to nominal voltage levels, power quality requirements and conformance testing requirements are recommended.