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BS EN IEC 61243-1:2021

BS EN IEC 61243-1:2021

$215.11

Live working. Voltage detectors – Capacitive type to be used for voltages exceeding 1 kV AC

Published By Publication Date Number of Pages
BSI 2021 84
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IEC 61243-1:2021 is applicable to portable voltage detectors, with or without built-in power sources, to be used on electrical systems for voltages of 1 kV to 800 kV AC, and frequencies of 50 Hz and/or 60 Hz. This document applies only to voltage detectors of capacitive type used in contact with the bare part to be tested, 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 (see 4.4.2.1 for general design). Other types of voltage detectors are not covered by this document. Self ranging voltage detectors (formally “multi range voltage detectors”) are not covered by this document. Some restrictions or formal interdictions on their use are applicable in case of switchgear of IEC 62271 series design, due to insulation coordination, on overhead line systems of electrified railways (see Annex B) and systems without neutral reference. For systems without neutral reference, the insulating level is adapted to the maximum possible voltage to the earth (ground). Products designed and manufactured according to this document contribute to the safety of 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 where otherwise specified, all the voltages defined in this document refer to values of phase-to-phase voltages of three-phase systems. In other systems, the applicable phase-to-phase or phase-to-earth (ground) voltages are used to determine the operating voltage. This third edition cancels and replaces the second edition published in 2003 and Amend-ment 1:2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) The scope is more precise, stating that only bare contact to the part to be tested is reliable for these contact voltage detectors. The rationale is that tests on painted or coated conductors have led to wrong indications, as this non-conductive paint or coat acts as a capacitor with different capacity according to the thickness. This capacity has an effect on the threshold voltage. b) A contact probe is introduced as a new type of non-conductive contact electrode. c) A new type “exclusively outdoor type” has been defined and implemented into the requirements and test procedure.d) A selector for voltage and frequency is allowed if foreseeable misuse is excluded. e) The marking for voltage detectors with low interference voltage has been made more precise. f) The indication groups have been made more precise and requirements and tests for the “ready to operate state” and “stand-by state” added. g) Requirements and tests for electromagnetic compatability have been implemented. h) An example for good electrical connection for the tests is introduced.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
11 FOREWORD
13 INTRODUCTION
14 1 Scope
2 Normative references
15 3 Terms and definitions
19 4 Requirements
4.1 General requirements
20 4.2 Functional requirements
4.2.1 Clear indication
21 4.2.2 Clear perceptibility
22 4.2.3 Temperature and humidity dependence of the indication
Tables
Table 1 – Indication group
23 4.2.4 Frequency dependence
4.2.5 Response time
4.2.6 Power source dependability
4.2.7 Testing element
4.2.8 Non-response to DC voltage
4.2.9 Time rating
4.2.10 Electromagnetic compatibility (EMC)
4.3 Electrical requirements
4.3.1 Insulating material
Table 2 – Climatic categories
24 4.3.2 Protection against bridging
4.3.3 Resistance against sparking
4.4 Mechanical requirements
4.4.1 General
4.4.2 Design
4.4.3 Dimensions, construction
25 Figures
Figure 1 – Examples of designs of voltage detectors of capacitive type
26 Table 3 – Minimum length of the insulating element (Li) of a voltage detector as a complete device
27 4.4.4 Grip force and deflection
4.4.5 Vibration resistance
4.4.6 Drop resistance
4.4.7 Shock resistance
4.5 Markings
28 4.6 Documents for the user
4.7 Instructions for use
4.8 Requirements in case of reasonably foreseeable misuse of the selector
4.8.1 Initial position of the selector
4.8.2 Voltage indication at an incorrect low position of the selector (where relevant)
5 Specific requirements
5.1 For insulating element of a voltage detector as a complete device
5.1.1 Dielectric strength
5.1.2 Leakage current
5.2 Insulation of the indicator casing of voltage detector as a separate device
5.3 Stand-by state
5.4 Ready to operate state
29 6 Tests
6.1 General
6.1.1 Testing provisions
6.1.2 Atmospheric conditions
6.1.3 Tests under wet conditions
6.1.4 Type test
30 6.1.5 Test methods
31 6.2 Function tests
6.2.1 Clear indication
32 Figure 2 – Examples of suitable means for ensuring appropriate contact between a contact electrode and the ball electrode
34 Figure 3 – Ball and ring test set-up (see 6.2.1 and 6.2.5)
36 Figure 4 – Test set-up with bars (see 6.2.1)
38 Figure 5 – Circuit connections for clear indication tests (see 6.2.1)
39 Table 4 – Selection of the test set-up for the influence of in-phase interference field
Table 5 – Distance G (see Figure 5d)
40 Table 6 – Selection of the test set-up for the influence of phase opposition interference field
Table 7 – Selection of the test set-up for the influence of interference voltage
42 6.2.2 Electromagnetic compatibility (EMC)
Table 8 – EMC parameters
Table 9 – Performance criteria for all the EMC tests
Table 10 – Test parameters for emission limit
43 6.2.3 Clear perceptibility of visual indication
44 Figure 6 – Test set-up for measurement of clear perceptibility of visual indication (see 6.2.3.1)
45 6.2.4 Clear perceptibility of audible indication
46 Figure 7 – Test set-up for measurement of clear perceptibility of audible indication (see 6.2.4.1)
47 6.2.5 Frequency dependence
6.2.6 Response time
6.2.7 Power source dependability
48 6.2.8 Check of testing element
6.2.9 Non-response to DC voltage
6.2.10 Time rating
49 6.3 Dielectric tests
6.3.1 Insulating material for tubes and rods for voltage detectors as a complete device
50 6.3.2 Protection against bridging for indoor and outdoor type voltage detectors
Table 11 – Selection of the test set-up and type of test
53 Figure 8 – Test set-up for protection against bridging and spark resistance (see 6.3.2 and 6.3.4)
Table 12 – Distance d1 for the bridging test set-up
55 6.3.3 Protection against bridging for outdoor type voltage detector
Table 13 – Dimensions for the concentric rings and band electrodes
56 Figure 9 – Test for protection against bridging for outdoor type voltage detector
57 6.3.4 Spark resistance
6.4 Mechanical tests
6.4.1 Visual and dimensional inspection
6.4.2 Grip force and deflection (only applicable for voltage detector as a complete device)
Table 14 – Selection of the test set-up for the spark resistance test
58 6.4.3 Vibration resistance
Figure 10 – Test set-up for grip force
59 6.4.4 Drop resistance
6.4.5 Shock resistance
6.4.6 Climatic dependence
Figure 11 – Drop resistance test – Diagonal position
60 Figure 12 – Curve of test cycle for climatic dependence
61 6.4.7 Durability of markings
7 Specific tests
7.1 Leakage current for voltage detector as a complete device
7.1.1 General
7.1.2 Leakage current under dry conditions
62 7.1.3 Leakage current under wet conditions (outdoor type and exclusively outdoor type)
Figure 13 – Arrangement for leakage current tests under dry conditions for voltage detector as a complete device
63 7.1.4 Alternative test for voltage detectors having completed the production phase
7.2 Test for stand-by state
7.3 Test for ready to operate state
Figure 14 – Arrangement for leakage current tests under wet conditions for outdoor type voltage detector as a complete device
64 8 Test for reasonably foreseeable misuse of the selector
8.1 Initial position of the selector
8.2 Voltage indication at incorrect low position of the selector (where relevant)
9 Conformity assessment of voltage detectors having completed the production phase
10 Modifications
65 Annexes
Annex A (normative) Suitable for live working; double triangle (IEC‑60417‑5216:2002‑10)
66 Annex B (normative) Instructions for use
68 Annex C (normative) Chronology of type tests
Table C.1 – Sequential order for performing type tests
69 Table C.2 – Type tests out of sequence
70 Annex D (informative) Classification of defects and tests to be allocated
Table D.1 – Classification of defects and associated requirements and tests
72 Annex E (informative) Rationale for the classification of defects
Table E.1 – Rationale for the classification of defects
75 Annex F (informative) Information and guidelines on the use of the limit mark and of a contact electrode extension
F.1 General
F.2 Situation when using a voltage detector as a complete device
Figure F.1 – Insulation element of a voltage detector as a complete device
76 Figure F.2 – Example of positioning of a voltage detector in contact with a live part without obstacles from other live parts
77 F.3 Situation when using a voltage detector as a separate device
Figure F.3 – Example of incorrect positioning of a voltage detector with the limit mark between two live parts
Figure F.4 – Usual way of managing the use of the voltage detector for maintaining the insulation distance between the limit mark and the hand guard
78 Figure F.5 – Usual ways of managing the use of the voltage detector as a separate device for assuring the appropriate insulation for the user
79 Annex G (informative) In-service care
G.1 General
G.2 Testing
80 Table G.1 – In-service testing
81 Annex H (informative) Information for the next maintenance
H.1 Overhead line test
H.1.1 Rationale
H.1.2 Proposal for an improved test (will be discussed within the next maintenance)
H.2 Threshold deviation ratio category (deviation category) for voltage detectors of category L
H.2.1 Rationale
H.2.2 Proposal for a new requirement (will be discussed within the next maintenance)
H.3 Phase opposition test for voltage detectors of category L
H.3.1 Rationale
H.3.2 Proposal for an improved test (will be discussed within the next maintenance)
82 H.4 Non-contact behaviour of voltage detectors of category L
H.4.1 Rationale
H.4.2 Proposal for a new test (will be discussed within the next maintenance)
Table H.1 – Maximum distances for early detection
83 Bibliography

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BS EN IEC 61243-1:2021
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