Hivatkozási szám

MSZ EN IEC 61558-1:2020

Dokumentumazonosító

174283

Cím

Transzformátorok, indukciós tekercsek, tápegységek és a velük képzett kombinációk biztonsága. 1. rész: Általános követelmények és vizsgálatok (IEC 61558-1:2017)

Angol cím

Safety of transformers, reactors, power supply units and combinations thereof. Part 1: General requirements and tests (IEC 61558-1:2017)

Alkalmazási terület

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. a) Stationary or portable, single-phase or poly-phase, air-cooled (natural or forced), isolating and safety isolating transformers, independent or associated with the following characteristics: – rated supply voltage not exceeding 1 000 V AC; – rated supply frequency not exceeding 500 Hz; and complying with the following values, unless otherwise specified in the relevant part of IEC 61558-2: • for isolating transformers: – rated output for single phase transformers, not exceeding 25 kVA, and for polyphase transformers not exceeding 40 kVA; – no-load output voltage and the rated output voltage exceeding 50 V AC, and not exceeding 500 V a.c, or 1 000 V AC to be in accordance with the national wiring rules or for a special application. • for safety isolating transformers: – rated output for single phase transformers not exceeding 10 kVA, and for polyphase transformers not exceeding 16 kVA; – no-load output voltage and the rated output voltage not exceeding 50 V AC between conductors, or between any conductor and protective earthing. NOTE 2 Isolating and safety isolating transformers are used where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification (for example toys, bells, portable tools, handlamps). b) Stationary or portable, single-phase or polyphase, air-cooled (natural or forced) separating transformers, auto-transformers, variable transformers and small reactors, independent or associated with the following characteristics: – rated supply voltage not exceeding 1 000 V AC; túl hosszú scope

ICS

29.180 Transzformátorok. Fojtótekercsek

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2020-03-01

Forrás

idt IEC 61558-1:2017; idt EN IEC 61558-1:2019

Előd

MSZ EN 61558-1:2006, MSZ EN 61558-1:2005/A1:2009

Utód

Módosítás

Kiegészítő információk

SZK-közlemények

Kapcsolódó európai jogszabály

2006/95/EK; (LVD06); 2014/35/EU (LVD14)

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