6625-00-575-4625 (MILT4791TYPEMD1)
NSN 6625-00-575-4625 (NIIN 00-575-4625) is an insulation breakdown test set in Federal Supply Class 6625, Electrical And Electronic Properties Measuring And Testing Instruments — a test set primarily designed to detect and indicate insulation breakdown in electric motors, transformers, and the like, at specific test voltages. Manufacturer part number MILT4791TYPEMD1 (Military Specifications, CAGE 81349); also referenced as MD-1 (Military Specifications); 0852, 63-0852-1000, TYPE MD-1-MODEL 0852 (Val-Tronics Inc).
Key specs: 120 V nominal AC voltage; 24 to 30 V DC voltage; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $1,032.64 gov standard price; export Schedule B 9030.90.8030; ships at 25 lb / 6.75 cu ft.