BS EN 61481-2:2014:2015 Edition
$215.11
Live working. Phase comparators – Resistive type to be used for voltages from 1 kV to 36 kV a.c.
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 82 |
This part of IEC 61481 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 standard is applicable to phase comparators of resistive type used in contact with the bare conductive parts to be compared:
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as a complete device including its insulating element or
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as a separate device, adaptable to an insulating stick which, as a separate tool, is not covered by this standard.
Some parts such as the contact electrode or the insulating 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 (see 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 (see 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-to-phase 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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 7 | English CONTENTS |
| 11 | INTRODUCTION |
| 12 | 1 Scope 2 Normative references |
| 13 | 3 Terms and definitions |
| 17 | 4 Requirements 4.1 Indication 4.2 Functional requirements 4.2.1 Clear indication |
| 19 | 4.2.2 Clear perceptibility 4.2.3 Temperature and humidity dependence of the indication 4.2.4 Frequency dependence Tables Table 1 – Climatic condition ranges |
| 20 | 4.2.5 Response time 4.2.6 Power source dependability 4.2.7 Testing element 4.2.8 Time rating 4.3 Electrical requirements 4.3.1 Insulating material 4.3.2 Protection against bridging 4.3.3 Resistance against sparking |
| 21 | 4.3.4 Resistive element 4.3.5 Insulating element of phase comparator as a complete device 4.3.6 Circuit current 4.3.7 Indicator casing 4.3.8 Insulation of the connecting lead 4.4 Mechanical requirements 4.4.1 General 4.4.2 Design |
| 23 | 4.4.3 Dimensions, construction Figures Figure 1 – Illustration of different elements of a phase comparator Table 2 – Minimum length of the insulating element (Li) of a phase comparator as a complete device |
| 24 | 4.4.4 Grip force and deflection Figure 2 – Location of allowed conductive parts within the minimum length of the insulating element of a pole of a phase comparator as a complete device |
| 25 | 4.4.5 Vibration resistance 4.4.6 Drop resistance 4.4.7 Shock resistance 4.5 Marking 4.6 Instructions for use |
| 26 | 4.7 Requirements in the case of reasonably foreseeable misuse during live working 4.7.1 Voltage selection 4.7.2 Frequency selection 5 Tests 5.1 General 5.1.1 Testing provisions 5.1.2 Atmospheric conditions 5.1.3 Tests under wet conditions |
| 27 | 5.1.4 Type test |
| 28 | 5.1.5 Test methods 5.2 Function tests 5.2.1 Description of the test set-up and general pass criteria |
| 30 | Figure 3 – Test set-up for clear indication with the ball electrode in front of its ring electrode |
| 31 | Figure 4 – Test set-up for clear indication with the ball electrode behind its ring electrode |
| 32 | Table 3 – Dimensioning of the ball and ring test set-up |
| 33 | Figure 5 – Example of positioning of a pole of the phase comparator in relation to a ball and ring test arrangement Figure 6 – Examples of suitable means for ensuring appropriate contact between a contact electrode and the ball electrode |
| 34 | 5.2.2 Clear indication |
| 35 | Table 4 – Test series and conditions for clear indication |
| 36 | 5.2.3 Electromagnetic compatibility (EMC) 5.2.4 Influence of electric interference fields |
| 38 | Table 5 – Test series and conditions for influence of electric interference fields |
| 39 | 5.2.5 Clear perceptibility |
| 40 | Figure 7 – Test set-up for clear perceptibility of visual indication |
| 42 | Figure 8 – Test set-up for clear perceptibility of audible indication |
| 43 | 5.2.6 Frequency dependence 5.2.7 Response time 5.2.8 Power source dependability |
| 44 | 5.2.9 Check of testing element 5.2.10 Time rating |
| 45 | 5.3 Dielectric tests 5.3.1 Insulating material for tubes and rods 5.3.2 Protection against bridging for indoor/outdoor type phase comparator |
| 46 | Figure 9 – Test arrangements and dimensions of the bars for protection against bridging Table 6 – Distance d1 for the bridging test set-up |
| 47 | Figure 10 – Electrical connection of the bars Figure 11 – Surface stress test |
| 48 | Figure 12 – Radial and surface stress test |
| 49 | Figure 13 – Bridging test on the connecting lead |
| 50 | 5.3.3 Protection against bridging for outdoor type phase comparator Table 7 – Dimensions for the concentric rings and band electrodes |
| 51 | 5.3.4 Spark resistance Figure 14 – Test arrangement for testing bridging protection of outdoor type phase comparator |
| 52 | 5.3.5 Leakage current for phase comparator as a complete device |
| 53 | Figure 15 – Arrangement for leakage current test under dry conditionsfor phase comparator as a complete device |
| 54 | Figure 16 – Arrangement for leakage current tests under wet conditions for phase comparator as a complete device |
| 55 | 5.3.6 Dielectric strength of connecting lead Figure 17 – Test set up for pressure load application |
| 56 | 5.3.7 Maximum current in case of misuse 5.4 Mechanical tests 5.4.1 Visual and dimensional inspection |
| 57 | 5.4.2 Grip force and deflection for phase comparator as a complete device 5.4.3 Robustness of connecting lead and connections Figure 18 – Test for grip force |
| 58 | Figure 19 – Test set-up for the robustness of connecting lead and connections |
| 59 | 5.4.4 Vibration resistance 5.4.5 Drop resistance |
| 60 | 5.4.6 Shock resistance Figure 20 – Drop resistance test – Diagonal position |
| 61 | 5.4.7 Climatic resistance Figure 21 – Curve of test cycle for climatic resistance |
| 62 | 5.4.8 Durability of markings 5.5 Test for reasonably foreseeable misuse during live working 5.5.1 Voltage selection (where relevant) 5.5.2 Frequency selection (where relevant) |
| 63 | 6 Conformity assessment of phase comparators having completed the production phase 7 Modifications |
| 64 | Annex A (normative) Instructions for use |
| 66 | Annex B (normative) Suitable for live working; double triangle (IEC 60417 – 5216 (2002-10)) |
| 67 | Annex C (normative) Chronology of type tests Table C.1 – Sequential order for performing type testsa |
| 68 | Table C.2 – Type tests out of sequence |
| 69 | Annex D (normative) Classification of defects and tests to be allocated Table D.1 – Classification of defects and associated requirements and tests |
| 71 | Annex E (informative) Information and guidelines on the use of the limit mark and of a contact electrode extension E.1 General E.2 Situation when using a phase comparator as a complete device Figure E.1 – Insulation element of a pole of a phase comparator as a complete device |
| 72 | Figure E.2 – Example of positioning of a pole of a phase comparator in contact with a live part without obstacles from other live parts |
| 73 | Figure E.3 – Example of incorrect positioning of a pole of a phase comparator with the limit mark between two live parts |
| 74 | E.3 Situation when using a phase comparator as a separate device Figure E.4 – Usual ways of managing the selection or the use of the phase comparator for maintaining the insulation distance between the limit mark and the hand guard Table E.1 – Recommended minimum lengths from the limit mark to the contact electrode (Ai) |
| 76 | Figure E.5 – Usual ways of managing the use of the phase comparator as a separate device for assuring the appropriate insulation for the worker |
| 77 | Annex F (informative) Rationale for the classification of defects Table F.1 – Rationale for the classification of defects |
| 79 | Annex G (informative) In-service care Table G.1 – In-service testing |
| 80 | Bibliography |
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