scope:

This Technical Report is applicable to portable non-contact voltage detectors (NCVD) with built-in power 175 source, to be used to indicate the presence or the absence of the operating voltage on electrical 176 systems for nominal voltages above 1 kV a.c. and frequencies of 16 2/3 Hz, 50 Hz and/or 60 Hz. 177 NOTE 16.7 Hz is often referenced 178 This Technical Report applies only to devices that are not designed to be used in contact with the bare 179 part of the installation on which the presence or the absence of the operating voltage has to be tested. 180 This Technical Report describes only devices, and their behaviour, using electric field and voltage 181 gradient detection principles even if other principles could be used. It provides performance guidelines, 182 recommendations for the use and recommended minimum criteria for selection. 183 Devices like personal safety distance voltage detectors, distance voltage detectors for emergency 184 responders or machine operators are not covered by this publication. 185 Except when otherwise specified, all the voltages defined in this standard refer to phase-to-phase 186 voltages of three-phase systems. In other systems, the applicable phase-to-phase or phase-to-earth 187 (ground) voltages should be used to determine the operating voltage.