DIN EN 61558-2-15:2012-09

This part of IEC 61558 deals with safety aspects of isolating transformers for the supply of medical locations. Unless otherwise specified, the term transformer covers isolating transformers for the supply of medical locations. This Part 2-15 of IEC 61558 is applicable to stationary, single-phase or three-phase, air-cooled (natural or forced) independent dry-type isolating transformers for the supply of medical IT systems for group 2 medical locations, designed to be permanently connected to the fixed wiring and intended to form the IT power system on the secondary side. The windings may be encapsulated or non-encapsulated. The rated supply voltage does not exceed 1 000 V a.c. The rated supply frequency and internal operational frequency do not exceed 500 Hz. The rated output does not be less than 0,5 kVA and does not exceed 10 kVA for single-phase and three-phase transformers. This Part 2-15 of IEC 61558 is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer. The no-load output voltage and the rated output voltage do not exceed 250 V a.c. for single-phase or three-phase transformer (phase-to-phase voltage). This standard does not cover power supply units. This part is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers. Transformers covered by this part are used in applications where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification. The responsible committee is K 323 "Transformatoren, Drosseln, Netzgeräte und entsprechende Kombinationen" ("Transformers, reactors, power supply units and corresponding combinations thereof") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.