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EVS-EN IEC 61558-1:2019

Safety of transformers, reactors, power supply units and combinations thereof - Part 1: General requirements and tests

General information
Valid from 02.07.2019
Base Documents
EN IEC 61558-1:2019; IEC 61558-1:2017
Directives or regulations
2014/35/EU Low voltage (LVD)
Standard history
Status
Date
Type
Name
02.07.2019
Main
07.05.2009
Amendment
04.01.2006
Main
This part of IEC 61558 deals with safety aspects of transformers, reactors, power supply units and combinations thereof such as electrical, thermal and mechanical safety. This document covers the following independent or associated stationary or portable types of dry-type transformers, power supply units, including switch mode power supply units, reactors and combinations thereof in the field of safety. The windings can be encapsulated or non-encapsulated. They are not forming a part of the distribution network. NOTE 1 The distinction between transformers, power supply units and switch mode power supply units is as follows: – for transformers, there is no change in frequency. However, transformers (e.g. constant voltage transformers) can have an internal resonance frequency not exceeding 30 kHz; – for power supply units, the internal operational frequency and waveform are different from the supply frequency and waveform, and the internal operational frequency does not exceed 500 Hz (see definition 3.1.19); – for switch mode power supply units, the internal operational frequency and waveform are different from the supply frequency and waveform and the internal operational frequency exceeds 500 Hz and does not exceed 100 MHz. The relevant parts of IEC 61558-2 can be found in the introduction of this document.
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