Is applicable to portable voltage detectors with or without a built-in power source to be used on electrical systems for voltages of 1 kV to 36 kV a.c., and frequencies from 15 Hz to 60 Hz. This part applies only to resistive voltage detectors used in contact with the part to be tested, as a single unit or as a separate device completed by an adaptable insulating pole covered in EN 60855 or EN E1235. Other types of voltage detectors are not covered by this part of standard.Capacitive voltage detectros are covered in EN 61243-1.