Práce pod napětím

Oblast zaměření: Práce pod napětím
Komise : IEC/TC 78 (Live working)
K připomínkám do: 28.05.2019
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This part of IEC 61243 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 800 kV AC, and frequencies of 50 Hz and/or 60 Hz.

This part applies only to voltage detectors of capacitive type used in contact with the bare 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 for general design).

Other types of voltage detectors are not covered by this part of the standard.

NOTE: Self ranging voltage detectors (formally “multi range voltage detectors”) are not covered by this standard.

Some restrictions or formal interdictions on their use are applicable in case of switchgear of IEC 62271 series design, due to insulation coordination, on overhead line systems of electrified railways (see Annex B, instructions for use) and systems without neutral reference. For systems without neutral reference the insulating level shall be adapted to the maximum possible voltage to the earth (ground).

Products designed and manufactured according to this standard contribute to the safety of users provided they are used by persons trained for the work, in accordance with the hot stick working method and the instructions for use.

Except where otherwise specified, all the voltages defined in this standard refer to values of phase-to-phase voltages of three-phase systems. In other systems, the applicable phase-to-phase or phase-to-earth (ground) voltages should be used to determine the operating voltage.