scope:

This part of IEC 61204 specifies the safety requirements for switch mode power supply (SMPS) units providing d.c. output(s) with or without auxiliary a.c. output(s) operating from a.c. or d.c. source voltages up to 1 000 V a.c. or 1 500 V d.c. (See exceptions in 1.2). This product standard covers both stand-alone and component SMPS as defined in this document. SMPS, which comply with this standard, satisfy the requirements of SMPS for use in or with other equipment, when referenced in such end product standards. This standard also covers DC-DC converters. D.C. power and distribution equipment which provides, distributes, monitors, and controls isolated secondary circuit power to other equipment typically used in communication applications (refer to Annex AC).