IEC 61481-2004 pdf – Live working – Portable phase comparators for use on voltages from 1 kV to 36 kV a.c..
IEC 60068-2-32:1 975, Environmental testing – Part 2: Tests – Test Ed: Free fall (Procedure 1) Amendment 2 (1 990) IEC 60071 -1 :1 993, Insulation co-ordination – Part 1: Definitions, principles and rules IEC 6041 7-DB:2002 1 , Graphical symbols for use on equipment IEC 60651 :1 979, Sound level meters IEC 60855:1 985, Insulating foam-filled tubes and solid rods for live working IEC 61 235:1 993, Live working – Insulating hollow tubes for electrical purposes IEC 61 31 8:1 994, Live working – Guidelines for quality assurance plans ISO 3745:1 977, Acoustics – Determination of sound power levels of noise sources – Precision methods for anechoic and semi-anechoic rooms ISO 8402:1 994, Quality management and quality assurance – Vocabulary ISO 9000 (all parts), Quality management and quality assurance standards ISO 9002:1 994, Quality systems – Model for quality assurance in production, installation and servicing ISO 9004 (all parts), Quality management and quality system elements CIE 1 5.2:1 986, Colorimetry 3 Definitions For the purpose of this International Standard, the following definitions apply. 3.1 phase comparator portable device used to detect and indicate the presence or absence of the correct phase relationship between two energized parts at the same nominal voltage and frequency 3.2 capacitive phase comparator device used to detect and indicate the phase relationship whose operation is based on the current passing through the stray capacitance to earth (ground). Capacitive phase comparators are two-pole phase comparators operating with wireless connection and single-pole phase comparators operating with memory system
3.3 resistive phase comparator device used to detect and indicate the phase relationship whose operation is based on the current passing through a resistor located in the resistive element. Resistive phase comparators are always two-pole phase comparators NOTE Resistive phase comparators mainly work on the basis of voltage measurement (voltage-based). 3.4 types of phase comparators single unit including its insulating elements and separate unit completed with an insulating pole; both devices with or without contact electrode extension 3.5 contact electrode bare conductive part which makes the electrical connection to the part to be tested [IEV 651 -1 0-09, modified] 3.6 contact electrode extension externally insulated conductive section between the resistive element and the contact electrode or between the indicator and the contact electrode intended to achieve the correct position of the indicator relative to the part to be tested 3.7 resistive element element which contains the current-limiting resistor and conductive parts NOTE Other current limiting components may be used. 3.8 indicator part of the phase comparator which indicates the presence or absence of the correct phase relationship between two parts. In the case of single-pole phase comparators, it contains the electronics and the indication that the phase comparator is ready for the next measurement on the second part to be tested (“memory ready”) 3.9 connecting lead lead that connects the two poles electrically 3.1 0 connecting system electronic arrangement used to send information between the two poles 3.1 1 earth lead lead that connects the phase comparator to earth (ground). It includes an earth clip or clamp or another device suitable for establishing a permanent or semi-permanent contact
3.23 rated voltage, U r value of voltage generally agreed upon by manufacturer and customer, to which certain operating specifications are referred. The rated voltage of the phase comparator is the voltage selected from IEC 60071 -1 , table 2, column 1 , which should either be equal to the nominal voltage (or the highest nominal voltage of its nominal range), or the next higher voltage selected from those tables 3.24 interference field electric or magnetic field capable of affecting the indication. It may result from the part to be tested or other adjacent parts 3.25 clear indication unambiguous detection and indication of incorrect phase relationship between the parts to be tested 3.26 clear perceptibility case when the indication is unmistakably discernible by the user under specific environmental conditions when the phase comparator is in its operating position 3.27 protection against bridging protection against flashover or breakdown, when the insulation between the parts of the installation to be tested, at different potentials, is reduced by the presence of the phase comparator