NEMA ICS 61800-1:2002 (R2007)

SCOPE AND OBJECT This part of IEC 61800 applies to general purpose adjustable speed d.c. drive systems which include the power conversion, control equipment, and also a motor or motors. Excluded are traction and electrical vehicle drives. It applies to systems connected to line voltages up to 1 kV a.c., 50 Hz or 60 Hz. NOTE - In the United States, the line voltage is not more than 600 V a.c. EMC aspects are covered in IEC 61800-3. U.S. NOTE - EMC Immunity and Emission requirements of IEC 61800-3 are not applicable within the US. This part of IEC 61800 gives the characteristics of the converters and their relationship with the complete d.c. drive system. It also states their performance requirements with respect to ratings, normal operating conditions, overload conditions, surge withstand capabilities, stability, protection, a.c. line earthing, and testing. Furthermore, it deals with application guidelines, such as control strategies, diagnostics, and topologies.