IEC 62230 Edition 1.1-2013 Electric cables - Spark-test method《电缆.火花试验方法》.pdf

1、 IEC 62230 Edition 1.1 2013-11 CONSOLIDATED VERSION VERSION CONSOLIDE Electric cables Spark-test method Cbles lectriques Mthode dessai au dfilement sec (sparker) IEC62230:2006+A1:2013 colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unl

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15、store.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62230 Edition 1.1 2013-11 CONSOLIDATED VERSION VERSION CONSOLIDE Electric cables Spark-test method Cbles lectriques Mthode dessai au dfilement sec (sparker)

16、 INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.060.20 ISBN 978-2-8322-1280-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this pub

17、lication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colourinsideIEC 62230 Edition 1.1 2013-11 REDLINE VERSION VERSION REDLINE Electric cables Spark-test method Cbles lectriques Mthode dessai au dfilement sec (spark

18、er) IEC62230:2006+A1:2013 colourinside 2 62230 IEC:2006+A1:2013 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Types of voltage waveform . 6 3 Procedure 6 4 Equipment 7 4.1 Safety . 7 4.2 High voltage source . 7 4.3 Voltage monitoring equipment . 9 4.4 Fault indicator . 9 4.5 Electrodes . 10 4

19、.6 Design of electrodes 10 5 Test voltages 11 6 Sensitivity . 11 6.1 AC, d.c. and h.f. voltages 11 6.2 Pulsed voltages . 11 6.3 Method of assessment. 12 7 Calibration 12 7.1 General . 12 7.2 Verification frequency 13 Annex A (informative normative) Recommended Minimum voltage levels . 14 Annex B (in

20、formative) Example of an artificial fault device . 16 Annex C (informative) Notes on the use of spark testing machines 17 Bibliography 18 Figure 1 Requirements for pulsed waveforms Rise time of wavefront 8 Figure 2 Requirements for pulsed waveforms Fluctuation of peak value and pulse repetition rate

21、 . 8 Figure 3 Requirements for pulsed waveforms Pulse duration 9 Figure B.1 Needle for use in the artificial fault device . 16 Table A.1 Recommended Minimum spark-test voltages for cables having rated voltage (U0) between 300 V and 3 000 V . 15 62230 IEC:2006+A1:2013 3 INTERNATIONAL ELECTROTECHNICAL

22、 COMMISSION _ ELECTRIC CABLES SPARK-TEST METHOD FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on

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32、the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. This Consolidated version of IEC 62230 bears the edition number 1.1. It consists of the first edition (2006) documents 20/810/FDIS and 20/816/RVD and its amendment 1 (2013) documents 20/146

33、2/FDIS and 20/1470/RVD. The technical content is identical to the base edition and its amendment. In this Redline version, a vertical line in the margin shows where the technical content is modified by amendment 1. Additions and deletions are displayed in red, with deletions being struck through. A

34、separate Final version with all changes accepted is available in this publication. This publication has been prepared for user convenience. 4 62230 IEC:2006+A1:2013 International Standard IEC 62230 has been prepared by IEC technical committee 20: Electric cables. This standard, based on the European

35、 Norm EN 50356 (2002), was prepared by CENELEC technical committee 20: Electric cables. It was submitted to the national committees for voting under fast track procedure. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents

36、of the base publication and its amendment will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amende

37、d. IMPORTANT The “colour inside” logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this publication using a colour printer. 62230 IEC:2006+A1:2013 5 INTRODUCTION

38、The practice of using spark-testers to detect defects in the insulation or sheathing layers of electric cables has been developed over many years of practical experience. The operation of the equipment using the verification method described in this standard has proved to be satisfactory. This metho

39、d employs an artificial fault simulator and its performance has been shown to be comparable to that using operational efficacy tests involving the detection of artificially prepared defects (i.e. faults in the insulation/sheathing material) in lengths of cable. 6 62230 IEC:2006+A1:2013 ELECTRIC CABL

40、ES SPARK-TEST METHOD 1 Scope The spark-test method specified in this standard is intended for the detection of defects in the insulation or sheathing layers of electric cables. For single-core cables with no outer metallic layer, the general process is accepted as being equivalent to subjecting samp

41、les of those cables to a voltage test in water. This standard specifies the operational requirements for the spark-test equipment, as well as the principal characteristics, functional parameters and calibration procedures for each type of test equipment. 2 Types of voltage waveform For the purposes

42、of this standard, the types of voltage waveform used for spark-testing are divided into the following groups: a.c. an alternating current (a.c.) voltage of approximately sine-wave form, at the industrial frequency of 40 Hz to 62 Hz; d.c. a direct current (d.c.) voltage; h.f. an alternating current (

43、a.c.) voltage of approximately sine-wave form, at frequencies between 500 Hz and 1 MHz; pulsed a voltage waveform comprising a fast rise time and highly damped wave-tail, as defined in 4.2. NOTE Provided the manufacturer can demonstrate equivalent effectiveness, h.f. voltages at frequencies below 50

44、0 Hz may be used. 3 Procedure The insulated conductor or sheathed cable shall be passed through an electrode energized at the test voltage. The method detailed in this standard provides for the application of a.c., d.c., h.f. and pulsed voltages. The requirements for voltage waveform, frequency and

45、test voltage are given in 4.2 and Clause 5. The maximum speed at which the cable shall pass through the electrode is determined by the minimum residence time specified in 4.6. When used as an alternative to a voltage test in water, it is recommended that the test shall be restricted to layer thickne

46、sses not greater than 2,0 mm and to a.c. and d.c. test voltages unless otherwise specified in the cable standard. Only the a.c. or d.c. voltage waveforms shall be used. The requirements are not applicable to cable insulation having a rated voltage (U0) greater than 3 kV. Annex A provides recommended

47、 minimum voltages for each voltage waveform, to be used in the absence of any alternative voltages in the relevant cable standard. 62230 IEC:2006+A1:2013 7 4 Equipment 4.1 Safety To limit the effect of electric shock to personnel, for all types of voltage source, the equipment shall be constructed i

48、n such a way that the short-circuit current is limited to less than 10 mA r.m.s. or equivalent. This requirement is additional to, or may be superseded by, any national regulation that prevails at the time. NOTE Guidance on the limiting of shock currents can be found in IEC 60479-1 and IEC 60479-2.

49、Further aspects of operational safety are given in Annex C. 4.2 High voltage source The high-voltage electrode shall be supplied in one of the following forms, as defined in Clause 2: a.c., d.c., h.f. or pulsed. For a d.c. test, connection to the test electrode shall be by means of a low capacitance unscreened lead. For d.c. and pulsed voltage testing, the test electrode may be either positive or negative po