Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures - Resistance of earth connection and equipotential bonding1 Scope This part of IEC 61557 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding, including their connections and terminals, with an indication of the measured value or indication of limits.

to ensure durability and the long service life of rectangular copper winding wires

Note: Annex A (informative) gives general guidance on selecting the appropriate procedure

1 Primary stage of manufacture

This part of IEC 61243 is applicable to hand-held two-pole voltage detectors with their accessories (crocodile clips and detachable leads) to be used in contact with parts of electrical systems:

Why should you use ISO 21910-1

This standard is applicable to process vessels and systems

Statistical verification of conformity with the metrological requirements

Note: The performance requirements in BS EN 15274 may not be applicable to highly specialized applications in extreme environmental conditions

It also facilitates efficient data use in facilities management

application for

substantial protection from light

dimensional accuracy