I.S. EN 61958:2001

FOREWORD
1 General
   1.1 Scope
   1.2 Normative references
2 Service conditions
3 Definitions
4 Ratings
   4.1 Rated voltage
   4.2 Rated insulation level
   4.3 Rated frequency
5 Design and construction
   5.1 General
   5.2 Threshold values for voltage presence indication
   5.3 Indication and perceptibility
   5.4 Coupling element and voltage limiting device
   5.5 Marking
   5.6 Phase comparator and connecting point
   5.7 Electromagnetic compatibility (EMC)
6 Type tests
   6.1 General
   6.2 Arrangement, assembly, marking, and instructions
        for use
   6.3 Clear indication of VPIS
   6.4 Response time of VPIS
   6.5 Dielectric strength of the coupling element of
        VPIS
   6.6 Maximum current delivered by the connecting point
   6.7 Voltage limiting device
   6.8 Clear perceptibility of visual indication
   6.9 Impact resistance
   6.10 Clear indication of phase comparators
   6.11 Electromagnetic compatibility tests (EMC)
   6.12 Indication until power source is exhausted
7 Routine tests
   7.1 General
   7.2 Clear indication
8 Guide to the selection of VPIS
9 Information to be given with enquiries, tenders
   and orders
10 Instructions for use
   10.1 General
   10.2 Instructions for use of VPIS
   10.3 Instructions for use of phase comparators
11 Safety
Annex ZA (normative) Normative references to
         international publications with their
         corresponding European publications
Annex ZB (informative) A-deviations

Applicable to voltage presence indicating systems (VPIS) incorporated in a.c. switchgear and controlgear covered by I.S. EN 60298 or I.S. EN 60466. Applies to phase comparators specifically designed for use with VPIS.