CEI EN 61481-2

This standard is applicable to phase comparators of resistive
type used in contact with the bare conductive parts to be
compared:

• as a complete device including its insulating
  elementor

• as a separate device, adaptable to an insulating stick which, as
  a separate tool, is not covered by this standard.

NOTE Some parts such as the contact electrode or
theinsulating element of a phase comparator as a
complete device may be dismantled.

Some restrictions on their use are applicable in the case of
factory-assembled switchgear and on overhead systems of electrified
railways (Annex A).

A device that is designed to provide other functions than phase
comparison is a different device and is not covered by this
standard. For example a device designed to be also used as a
voltage detector is not covered by this standard (Annex A).

Products designed and manufactured according to this standard
contribute to the safety of the 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 when otherwise specified, all the voltages defined in
this standard refer to phase-tophase 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.