EVS-EN 61558-1:2001

Safety of power transformers, power supply units and similar - Part 1: General requirements and tests

General information
Withdrawn from 04.01.2006
Base Documents
EN 61558-1:1997; EN 61558-1:1997/A1:1998; IEC 61558-1:1997; IEC 61558-1:1997/A1:1998
Directives or regulations
2014/35/EU Low voltage (LVD)

Although the standard’s status is withdrawn, it still has the presumption of conformity in the meaning of regulation 2014/35/EU and conformance with the regulation ’s requirements can be guaranteed by using the withdrawn version of the standard. The presumption of conformity is valid until a corresponding amendment is published in the Official Journal of the European Union.
To view the latest lists of harmonised standards published in the Official Journal of the European Union, visit:

Standard history
This International Standard deals with all aspects of safety (such as electrical, thermal and mechanical) of: a) Stationary or portable, single-phase or polyphase, air-cooled (natural or forced) isolating and safety isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1000 V a.c. and rated frequency not exceeding 1 MHz, the rated output not exceeding: For isolating transformers: - 25 kVA for single-phase transformers, 40 kVA for polyphase transformers. For safety isolating transformers: - 10 kVA for single-phase transformers, 16 kVA for polyphase transformers.
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