IEC 61243-1:2003+A1:2009 is applicable to portable voltage detectors, with or without built-in power sources, to be used on electrical systems for voltages of 1 kV to 765 kV a.c., and frequencies of 50 Hz and/or 60 Hz. This part applies only to voltage detectors of capacitive type used in contact with the part to be tested, as a complete device including its insulating element or as a separate device, adaptable to an insulating stick which, as a separate tool, is not covered by this standard (see 4.4.1 for general design). The contents of the corrigendum of October 2005 have been included in this copy. This consolidated version consists of the second edition (2003) and its amendment 1 (2009). Therefore, no need to order amendment in addition to this publication.