ДСТУ EN IEC 61558-1:2021 Безпечність силових трансформаторів, реакторів, блоків живлення і їх комбінацій. Частина 1. Загальні вимоги та випробування (EN IEC 61558-1:2019, IDT; IEC 61558-1:2017, IDT)

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«Український науково-дослідний і навчальний центр
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(ДП «УкрНДНЦ»)

Наказ від 13.09.2021 № 319

EN IEC 61558-1:2019

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

прийнято як зміна до національного стандарту
методом «підтвердження» за позначенням

ДСТУ EN IEC 61558-1:2021
(EN IEC 61558-1:2019, IDT; IEC 61558-1:2017, IDT)

Безпечність силових трансформаторів, реакторів, блоків живлення і їх комбінацій.
Частина 1. Загальні вимоги та випробування

З наданням чинності від 2021-09-15

Відповідає офіційному тексту

З питань придбання офіційного видання звертайтесь
до національного органу стандартизації
(ДП «УкрНДНЦ» http://uas.org.ua)

CONTENTS

FOREWORD

INTRODUCTION

1 Scope

2 Normative references

3 Terms and definitions

3.1 Transformers

3.2 General terms

3.3 Operations and protections

3.4 Circuits and windings

3.5 Ratings

3.6 No-load values

3.7 Insulation

3.8 Touch current and protective earthing conductor current

4 General requirements

5 General notes on tests

6 Ratings

7 Classification

8 Marking and other information

9 Protection against electric shock

9.1 General

9.2 Protection against contact with hazardous-live-parts

9.3 Protection against hazardous electrical discharge

10 Change of input voltage setting

11 Output voltage and output current under load

12 No-load output voltage

13 Short-circuit voltage

14 Heating

14.1 General requirements

14.2 Application of 14.1 or 14.3 according to the insulation system

14.3 Accelerated ageing test for undeclared class of insulation system

15 Short circuit and overload protection

15.1 General requirements

15.2 Inherently short-circuit proof transformers

15.3 Non-inherently short-circuit proof transformers

15.4 Non-short-circuit proof transformers

15.5 Fail-safe transformers

16 Mechanical strength

16.1 General

16.2 Stationary transformers

16.3 Portable transformers (except portable transformers with integral pins for introduction in socket-outlet in the fixed wiring)

16.4 Portable transformers provided with integral pins for introduction in socket-outlets of the fixed wiring

16.5 Additional requirements for transformers to be used in vehicles and railway applications

17 Protection against harmful ingress of dust, solid objects and moisture

17.1 Degrees of protection provided by enclosures (IP code)

17.2 Humidity treatment

18 Insulation resistance, dielectric strength and leakage current

18.1 General

18.2 Insulation resistance

18.3 Dielectric strength test

18.4 Insulation between and within windings

18.5 Touch current and protective earthing conductor current

19 Construction

19.1 General construction

19.2 Flammability of materials

19.3 Short-circuit characteristics of portable transformers

19.4 Class II transformer contact prevention of accessible conductive parts

19.5 Class II transformer insulation reassembling after service

19.6 Loosening of wires, screws or similar parts

19.7 Resistor or capacitor connection with accessible conductive parts

19.8 Bridging of separated conductive parts by resistors or capacitors

19.9 Insulating material separating input and output windings

19.10 Accidental contact protection against hazardous-live-parts provided by isolating coating

19.11 Insulating material of handles, operating levers, knobs and similar parts

19.12 Winding construction

19.13 Fixing of handles, operating levers and similar parts

19.14 Fixing of covers providing protection against electric shock

19.15 Strain on fixed socket-outlets caused by pin-transformers connection

19.16 Portable transformers for use in irregular or harsh conditions

19.17 Drain hole of transformers protected against ingress of water

19.18 Plug connected transformers protected against ingress of water

19.19 Flexible cable or flexible cord connection for class I portable transformers

19.20 SELV- and PELV-circuit separation of live parts

19.21 Protection against contact for FELV-circuit

19.22 Protective earthing regarding class II transformers

19.23 Protective earthing regarding class III transformers

20 Components

21 Internal wiring

22 Supply connection and other external flexible cables or cords

23 Terminals for external conductors

24 Provisions for protective earthing

25 Screws and connections

26 Creepage distances, clearances and distances through insulation

26.1 General

26.2 Creepage distances and clearances

26.2.1 General

26.3 Distance through insulation

27 Resistance to heat, fire and tracking

27.1 General

27.2 Resistance to heat

27.3 Resistance to abnormal heat under fault conditions

27.4 Resistance to fire

27.5 Resistance to tracking

28 Resistance to rusting

Annex A (normative) Measurement of creepage distances and clearances

Annex В (normative) Testing a series of transformers

Annex C (void)

Annex D (void)

Annex E (normative) Glow-wire test

Annex F (normative) Requirements for manually operated switches which are parts of transformers assembly

Annex G (normative) Tracking test

Annex H (normative) Electronic circuits

Annex I (informative) Dimensions for rectangular cross-section connectors of transformers, basic dimensions and coordination

Annex J (normative) Measuring network for touch-currents

Annex К (normative) Insulated winding wires

Annex L (normative) Routine tests (production tests)

Annex M (informative) Examples to be used as a guide for 19.1

Annex N (informative) Examples for checking points of dielectric strength test voltages

Annex О (void)

Annex P (informative) Examples for measurement points of creepage distances and clearances

Annex Q (informative) Explanation of IP numbers for degrees of protection

Annex R (normative) Explanations of the application of 6.1.2.2.1 of IEC 60664-1:2007

Annex S (void) 

Annex T (void)

Annex U (void)

Annex V (informative) Symbols to be used for thermal cut-outs

Annex W (normative) Coated printed circuit boards

Bibliography

Index of defined terms