DIN EN 61558-2-16:2010-07

This International Standard deals with safety requirements for switch mode power supply units and transformers for switch mode power supply units. Transformers incorporating electronic circuits are also covered by this standard. This part 2-16 applies to: a) Switch mode power supply units incorporating safety isolating transformers and providing SELV, PELV or FELV a.c. or d.c. output voltage(s), or a combination thereof according to IEC 61140 and IEC 60364-4-41 for use with household and other consumer products, except for products covered by IEC 60065, IEC 61347 standard series, IEC 61204-7 and IEC 60950-1. b) Switch mode power supply units for use with household and other consumer products with a maximum output voltage not exceeding 1 000 V a.c. or 1 414 V ripple free d.c. for use with household and other consumer products, except for products described in a) and products covered by IEC 60065, IEC 61347 standard series, IEC 61204-7 and IEC 60950-1. c) This standard may also be used for transformers for use in switch mode power supply units (see Annex BB). This part covers safety requirements for: - SMPS incorporating a separating transformer for general use in accordance with part 2-1; - SMPS incorporating an isolating transformer, for general use according to part 2-4; - SMPS incorporating a safety for general use according to part 2-6; - SMPS incorporating a safety isolating transformer, for general use according to part 2-6; - SMPS incorporating an auto-transformer, for general use according to part 2-13; The requirements of the corresponding parts 2 apply for SMPS for special applications, which correspond to the other parts 2 of the 61588 standard series. The requirements in this part are additional. In case of discrepancies regarding the requirements specified in these parts, the stricter requirement shall be given priority. Switch mode power supply units covered by this standard are air cooled (natural or forced) independent, stationary, portable, associated, single-phase, or polyphase, with a rated supply voltage not exceeding 1 100 V a.c. The rated supply frequency does not exceed 500 Hz, the rated internal operating frequency exceeding 500 Hz, but not exceeding 100 MHz, and the rated output not exceeding 1 kVA or 1 kW, incorporating dry-type transformers with encapsulated or non-encapsulated windings. Associated transformers for switch mode power supply units covered by Annex BB of this standard have a rated output which shall not exceed: - 25 kVA for single-phase transformers; - 40 kVA for polyphase transformers. The no-load output voltage and the rated output voltage of switch mode power supply units shall not exceed the following values: - 1 000 V a.c. or 1 415 V ripple free d.c. when separating transformers or auto-transformers are used; - 500 V a.c. or 708 V ripple free d.c. when isolating transformers are used; - 50 V a.c. or 120 V ripple free d.c. when safety isolating transformers are used. The no-load output voltage and the rated output voltage of independent switch mode power supply units shall not exceed the following values: - 50 V a.c. or 120 V ripple free d.c. when separating transformers or auto-transformers are used. This standard is also applicable to switch mode power supply units, converters and inverters without limitation of the rated output. However, such switch mode power supply units are for special applications and are subject to an agreement between the purchaser and the manufacturer. This standard may also be used as a guide for products not covered by the scope of this standard, the scope of IEC 61204-7, or the scope of the IEC 61347 standard series. The responsible Committee is K 323 "Transformatoren, Drosseln, Netzgeräte und ähnliche Produkte für Niederspannung, jedoch bis 1 100 V" ("Transformers, reactors, power supply units and similar products for low voltages up to 1 100 V") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.