IEC 61558-2-15:1999
Safety of power transformers, power supply units and similar - Part 2-15: Particular requirements for isolating transformers for the supply of medical locations

Standard No.

IEC 61558-2-15:1999

Release Date

1999

Published By

International Electrotechnical Commission (IEC)

Status

Withdraw

Replace By

IEC 61558-2-15:2011

Latest

IEC 61558-2-15:2022 RLV

Scope

Replacement: This international standard deals with all aspects of safety such as electrical, thermal and mechanical. This part 2-15 of IEC 61558 applies to stationary, single-phase or polyphase, air-cooled (natural or forced) isolating transformers for the supply of group II medical locations, designed to be permanently connected to the fixed wiring of IT supply system, having a rated supply voltage not exceeding 1 000 V a.c. and rated frequency not exceeding 500 Hz. The rated output shall not be less than 3 kVA and shall not exceed 10 kVA. NOTE 1 - Details of IT supply systems are to be found in IEC 60364-3. NOTE 2 - The wiring rules for group II medical locations are under consideration [1]. The no-load output voltage and the rated output voltage shall not exceed 250 V a.c. single-phase or polyphase (phase-to-phase voltage). Isolating transformers are used where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification. This standard is applicable to dry-type transformers. The winding may be encapsulated or non-encapsulated. NOTE 3 - For transformers filled with liquid dielectric or pulverised material such as sand, requirements are under consideration. NOTE 4 - Attention is drawn to the fact that: - for transformers intended to be used in tropical countries, special requirements may be necessary; - in locations where special environmental conditions prevail, particular requirements may be necessary. This standard also applies to transformers incorporating electronic circuits. This standard does not apply to external circuits and their components intended to be connected to the input and output terminals or socket-outlets of the transformer. note:* The figures in square brackets refer to the bibliography.

IEC 61558-2-15:1999 history

• 0000 IEC 61558-2-15:2022 RLV
• 2011 IEC 61558-2-15:2011 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-15: Particular requirements and tests for isolating transformers for the supply of medical locations
• 1999 IEC 61558-2-15:1999 Safety of power transformers, power supply units and similar - Part 2-15: Particular requirements for isolating transformers for the supply of medical locations