BS EN 61557-13:2011:2013 Edition
$142.49
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures – Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 26 |
This part of IEC 61557 defines special performance requirements for hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems up to 1 000 V a.c. and 1 500 V d.c., taking into account the influence of high external low-frequency magnetic fields and other influencing quantities. This standard does not apply to current clamps or sensors which are used in combination with devices for insulation fault location according to IEC 61557-9, unless it is specified by the manufacturer.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 8 | FOREWORD |
| 10 | INTRODUCTION |
| 11 | 1 Scope 2 Normative references 3 Terms and definitions |
| 13 | 4 Requirements 4.1 General 4.2 Operating classes 4.3 Measuring range / percentage operating uncertainty of reading |
| 14 | Tables Table 1 – Relation of external field and operating class |
| 15 | Figures Figure 1 – Percentage operating uncertainty in relation to operating class and external magnetic field for measuring ranges less than or equal to 10 mA |
| 16 | 4.4 Reference conditions Figure 2 – Percentage operating uncertainty in relation to operating classes and external magnetic field and measuring ranges greater than10 mA |
| 17 | 4.5 Minimum rated operating conditions Figure 3 – Reference position for two straight conductors (for differential method) |
| 18 | Table 2 – Calculation of percentage operating uncertainty |
| 19 | 4.6 Mechanical requirements 4.7 Pollution degree 4.8 Measurement category 4.9 Electromagnetic compatibility (EMC) 5 Marking and operating instructions 5.1 Marking Figure 4 – Example of operating positions for differential method |
| 20 | 5.2 Operating instructions 6 Tests 6.1 Type tests Figure 5 – Example for an applicable pictogram for operating class 1 |
| 21 | 6.2 Routine tests |
| 22 | Annex A (informative) Examples of measurement applications Figure A.1 – Example for measurement of protective conductor current – Direct method Figure A.2 – Example for measurement of leakage current including protective conductor current – Differential method |
| 23 | Bibliography |
