IEC IEC61557-1 Edition 3.0 2019-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical safety in low voltage distribution systems up to 1 ooo V a.c. and 1 5oo V d.c. - Equipment for testing, measuring or monitoring of protective measures Part 1: General requirements Sécurite électrique dans les réseaux de distribution basse tension au plus égale a 1 000 V c.a. et 1 500 V c.c. - Dispositifs de controle, de mesure ou de surveillance de mesures de protection Partie 1: Exigences genérales IEC 61557-1:2019-07(en-fr) IEC IEC61557-1 Edition 3.0 2019-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical safety in low voltage distribution systems up to 1 ooo V a.c. and 1 5oo V d.c. - Equipment for testing, measuring or monitoring of protective measures Part 1: General requirements Sécurite électrique dans les réseaux de distribution basse tension au plus égale a 1 000 V c.a. et 1 500 V c.c. - Dispositifs de controle, de mesure ou de surveillance de mesures de protection Partie 1: Exigences génerales INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS17.220.20;29.080.01;29.240.01 ISBN 978-2-8322-7141-4 Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agree. ? Registered trademark of the International Electrotechnical Commissior Marque deposée de la Commission Electrotechnique Internationale IEC 61557-1:2019 IEC 2019 -2 CONTENTS FOREWORD INTRODUCTION, Scope.. 1 2 Normative references 3 Terms and definitions . 4 Requirements .. 4.1 General requirements 12 4.2 Influence quantities - Operating uncertainty (B), percentage operating uncertainty (B [%]) . 12 4.3 Rated operating conditions . 4.4 Battery test facility 14 4.5 Safety ... 14 4.6 Electromagnetic compatibility. 14 4.6.1 Immunity.. 4.6.2 Emission.. 4.7 Mechanical strength against vibration 14 Marking and operating instructions 5 15 5.1 General. 15 5.2 Marking.... 15 5.3 Operating instructions.... 15 5.3.1 Performance requirements. 15 5.3.2 Other information. Tests 6 16 6.1 General.. 6.2 Operating uncertainty.. .16 6.2.1 General . 16 6.2.2 Influence of changing position ... 6.2.3 Influence of temperature. 16 6.2.4 Influence of the supply voltage . 16 6.3 Battery test facility . 16 6.4 Safety tests... 6.5 EMC tests ... 6.6 Mechanicalrequirements. 6.7 Marking and operating instructions... 6.8 Records. 17 Annex A (informative) Explanation of the application of GUM in series IEC 61557 18 A.1 Overview.. Basic model of evaluation of results under operational conditions . A.2 .18 A.2.1 General ... 18 A.2.2 Standard uncertainty of a result . 18 A.2.3 Expanded uncertainty .... A.2.4 Relative operating uncertainty 19 A.2.5 Calibration uncertainty.. 20 A.3 Operating uncertainty calculations as basis for 4.1 20 A.3.1 Standard uncertainty ... A.3.2 Operating uncertainty in accordance with 4.1. 20