This part of IEC 61481-2t is applicable to portable phase comparators of resistive type to be used on electrical systems for voltages from 1 kV a.c. to 36 kV a.c. and frequencies of 50 Hz and/or 60 Hz.
This document 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 element or as a separate device, adaptable to an insulating stick which, as a separate tool, is not covered by this document.

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