EN IEC 61557-13:2024

IEC 61557-13:2023 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 AC and 1 500 V DC taking into account the influence of high external low-frequency magnetic fields and other influencing quantities. See Annex A for examples of measurement applications.This document does not apply to current clamps or sensors that are used in combination with devices for insulation fault location in accordance with IEC 61557-9, unless it is specified by the manufacturer.IEC 61557-13:2023 cancels and replaces the first edition published in 2011. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:a) the term "fixing device" has been removed;b) the measuring range was changed to a display range, the indication of DC or peak values has been added in 4.1;c) the frequency for the test of sensitivity for low-frequency magnetic fields has been defined in 4.2;d) the specified measuring range is now defined as the range of indicated values based on the operating uncertainty in 4.3;e) alignment of the structure with that of the whole IEC 61557 series;f) the variation E12 (maximum load current), may be specified according to the manufacturer’s specification.