MIL-_C-24368B.pdf

This is a Military Specification (MIL-C-24368B) issued by the Department of the Navy on March 25, 1987, covering the requirements for connector assemblies, plugs, and receptacles used for electric power transfer between shore-to-ship and ship-to-ship interfaces.

The specification establishes construction, performance, and testing standards for three-phase, ungrounded electrical connectors rated for 440 to 480 volts and 400 to 500 amperes per phase. Key requirements include materials specifications (copper alloys, corrosion-resistant hardware, prohibited use of asbestos and cadmium), configuration standards for cable connectors and bus lugs, phase polarization through keying mechanisms, and identification marking per MIL-STD-130. Electrical performance requirements mandate contact resistance limits not exceeding 8-11 millivolts for 300-ampere test current, insulation resistance of at least 500 megohms at 500 volts DC, dielectric withstanding voltage of 2500 volts RMS, and current overload capacity specifications. The specification also prescribes mechanical and environmental performance tests including ambient temperature extremes (-55°C to +85°C), fluid immersion, water deluge at 400 gallons per minute, mechanical vibration, physical shock, salt spray corrosion testing, and hydrostatic pressure resistance of 1000 lb/in². Quality assurance provisions require qualification inspection at a Naval Sea Systems Command laboratory using samples representative of production units, with acceptance quality levels of 1.0 percent for major defects and 4.0 percent for minor defects. Packaging must comply with MIL-E-17555. Contractors must prepare material certifications and quality conformance inspection reports as specified in the applicable contract or purchase order.