BSI PD IEC/TR 61243-6:2017
$167.15
Live working. Voltage detectors – Guidelines on non-contact voltage detectors (NCVD) for use at nominal voltages above 1 kV AC
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 42 |
This part of IEC 61243 , which is a Technical Report, is applicable to portable non-contact voltage detectors (NCVD) with built-in power source, to be used to indicate the presence or the absence of the operating voltage on electrical systems for nominal voltages above 1 kV AC and frequencies of 16 2/3 Hz, 50 Hz and/or 60 Hz.
16,7 Hz is often referenced.
This document applies only to devices that are not designed to be used in contact with the bare part of the installation on which the presence or the absence of the operating voltage has to be tested.
This document describes only devices, and their behaviour, using electric field and voltage gradient detection principles even if other principles could be used. It provides performance guidelines, recommendations for use and recommended minimum criteria for selection.
Devices like personal safety distance voltage detectors, distance voltage detectors for emergency responders or machine operators are not covered by this document.
Except when otherwise specified, all the voltages defined in this document refer to 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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | CONTENTS |
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 13 | 4 The principles of an NCVD 4.1 NCVD designed to work at a distance without any contact |
| 14 | Figures Figure 1 – NCVD working at a distance without any contact |
| 15 | 4.2 NCVD designed to work with reference points 4.2.1 General Figure 2 – Effect of the relative position of the non-contact voltage detector |
| 16 | 4.2.2 NCVD designed to work with one reference point Figure 3 – NCVD working at a distance with one reference point |
| 17 | 4.2.3 NCVD designed to work with two reference points Figure 4 – Non-contact voltage detector with a reference point making contact with the cable insulation covering an insulated conductor |
| 18 | Figure 5 – Non-contact voltage detector working with two reference points making contact with the cap and pin of an insulator Figure 6 – Non-contact voltage detector working with two reference points on an underground cable |
| 19 | 5 Different designs of non-contact voltage detectors |
| 20 | Tables Table 1 – Types of non-contact voltage detector |
| 21 | 6 Limitations and recommendations of use for each type of NCVD 6.1 Principal limitations 6.2 Recommendations for the selection, calibration and use of NCVD 6.2.1 Selection of the appropriate type of NCVD Table 2 – Limitations for use |
| 22 | 6.2.2 Calibration of the selected device 6.2.3 Use of the selected device Table 3 – Specific recommendations for use |
| 23 | 7 Recommended requirements 7.1 General 7.2 Recommended general requirements 7.2.1 Safety 7.2.2 Indication 7.2.3 Electromagnetic compatibility (EMC) |
| 24 | 7.3 Recommended functional requirements 7.3.1 Clear indication |
| 26 | Table 4 – Examples of values of the radius of the cone of detection as a function of the directional properties angle |
| 27 | 7.3.2 Clear perceptibility Figure 7 – Directional properties of NCVD working at distance |
| 28 | 7.3.3 Temperature and humidity dependence of the indication 7.3.4 Frequency dependence 7.3.5 Response time 7.3.6 Power source dependability 7.3.7 Testing element Table 5 – Climatic categories |
| 29 | 7.3.8 Non response to DC voltage (static electric field) 7.3.9 Immunity to electrostatic discharges 7.3.10 Time rating 7.4 Electrical requirements 7.4.1 Insulating material 7.4.2 Protection against bridging for Type 3 only |
| 30 | 7.4.3 Resistance against sparking 7.4.4 Resistive (impedance) element of Type 5 only 7.5 Recommendations for mechanical performance 7.5.1 General 7.5.2 Design 7.5.3 Dimensions and construction |
| 31 | Figure 8 – Examples of designs of NCVDs |
| 32 | 7.5.4 Degree of protection provided by enclosure 7.5.5 Grip force and deflection Table 6 – Minimum length of the insulating element or of the insulating stick (Li) |
| 33 | 7.5.6 Vibration drop and shock resistance 7.6 Markings 7.7 Instructions for use |
| 34 | Annex A (informative)General considerations about voltage detection A.1 General A.2 Principles of functioning of voltage detectors A.2.1 Basic analysis A.2.2 Voltage detection with two contact electrodes (bi-polar detectors) |
| 35 | A.2.3 Voltage detection with one contact electrode Figure A.1 – Bi-polar voltage detection principle |
| 36 | A.2.4 Voltage detection without contact electrode Figure A.2 – Capacitive unipolar voltage detection principle |
| 38 | Annex B (informative)Instructions for use |
| 39 | Annex C (informative)In-service care C.1 General C.2 Maintenance Table C.1 – Recommended checking points for in-service care |
| 40 | Annex D (informative)Suitable for live working; double triangle |
| 41 | Bibliography |
