BS EN 61481-1:2014 PDF

1   Scope This part of IEC 61481 is applicable to portable phase comparators of capacitive type to be used on electrical systems for voltages exceeding 1 kV a.c. and frequencies of 50 Hz and/or 60 Hz. This standard is applicable to:

• single-pole phase comparators of capacitive type operating with a memory system up to 36 kV a.c.,

• two-pole phase comparators of capacitive type operating with a wireless connection up to 245 kV a.c.

This standard is applicable to phase comparators of capacitive 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 standard.

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

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