This part of IEC 61204 applies to power supplies for general purpose applications. These power supplies carry out an a.c. to d.c. conversion or a d.c. to d.c. conversion. Appropriate provisions for safety will be found in the relevant product standards. As far as input characteristics are concerned, this standard applies to all d.c. or a.c. source voltages with a rated value of up to 600 V. As far as output characteristics are concerned, this standard applies only to the supplies of d.c. voltages of less than 200 V with a power limited to 2,5 kW; the latter power can be extended to 30 kW by taking care of the appropriate test methods. The object of this part of IEC 61204 is to set down the requirements for the performance of low-voltage power supply devices of assessed functionality intended for serial production. If other performance requirements or quality assurance have been agreed by a contract, the latter prevails. This part of IEC 61204 is intended as a guidance for the improvement of the performance of large series. For performance and quality conformance inspection, the numbering of the clauses and subclauses of this part of IEC 61204 refer, unless stated otherwise, to IEC 61204.