EN 62230-2007 en Electric cables - Spark-test method (Incorporates Amendment A1 2014)《电缆 火花试验方法［替代 CENELEC EN 50356］》.pdf

1、BRITISH STANDARDBS EN62230:2007Incorporating corrigendum no. 1Electric cables Spark-test method The European Standard EN 62230:2007 has the status of aBritish StandardICS 29.060.20 BS EN +A1:2014BS EN 62230:2007+A1:2014ISBN 978 0 580 77746 2Amendments/corrigenda issued since publicationAmd. No. Date

2、 Comments17446 Corrigendum No. 128 September 2007 Correction to national foreword30 April 2014 Implementation of IEC amendment 1: 2014 with CENELEC endorsement A1:2014This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 September 2007 The Briti

3、sh Standards Institution 2014. Published by BSI Standards Limited 2014National forewordThis British Standard is the UK implementation of EN 62230:2007+A1:2014. It is identical to IEC 62230:2006, incorporating amendment 1:2014. It supersedes BS EN 62230:2007 which will be withdrawn on 1 January 2017.

4、The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by .The UK participation in its preparation was entrusted by Technica

5、l Committee GEL/20, Electric cables, to Subcommittee GEL/20/17, Electric cables Low voltage.A list of organizations represented on this subcommittee can be obtained on request to its secretary.The publication does not purport to include all the necessary provisions of a contract. Users are responsib

6、le for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.EUROPEAN STANDARD EN 62230NORME EUROPENNE EUROPISCHE NORMAugust 2007 CENELEC European Committeefor ElectrotechnicalStandardization Comit Europen de Normalisation Electrotechnique Europisch

7、es Komitee fr ElektrotechnischeNormung CentralSecretariat: rue deStassart 35, B - 1050 Brussels 2007 CENELEC -All rights of exploitation in any formand by any means reserved worldwide for CENELEC members.Ref. No. EN 62230:2007 EICS 29.060.20 Supersedes EN50356:2002English version Electric cables -Sp

8、ark-test method (IEC 62230:2006)Cbles lectriques - Mthode dessai au dfilement sec (sparker) (CEI 62230:2006) Kabel und isolierte Leitungen - Durchlaufspannungsprfung (IEC 62230:2006) This European Standard was approved by CENELEC on 2007-08-01. CENELEC members are bound to complywith the CEN/CENELEC

9、 Internal Regulations which stipulate the conditions for giving this European Standardthe status of a national standard without any alteration.Up-to-date lists and bibliographicalreferences concerningsuch national standards maybe obtained on application to the Central Secretariat or to any CENELECme

10、mber.This European Standard exists in three official versions (English,French, German). A version in any otherlanguage made by translation under the responsibility of a CENELEC member into its own language and notifiedto the Central Secretariat has the same status as the officialversions.CENELEC mem

11、bers are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,Lithuania, Luxembourg,Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloveni

12、a, Spain,Sweden, Switzerland and the United Kingdom.EN 62230+A1February 2014Foreword The text of the International Standard IEC 62230:2006, prepared by IEC TC20, Electric cables, wassubmitted to the formal vote and was approved byCENELEC as EN 62230 on 2007-08-01 without anymodification. This Europe

13、an Standard supersedes EN 50356:2002.The following dates were fixed: latest date bywhich the EN has to be implemented at nationallevel by publication of an identicalnational standard or byendorsement (dop) 2008-08-01 latest date bywhich the national standards conflicting with the EN have to be withd

14、rawn (dow) 2010-08-01 _ Endorsement noticeThe text of the International Standard IEC 62230:2006 was approved by CENELEC as aEuropeanStandard without any modification._ 2 EN 62230:2007BS EN 62230:2007+A1:2014EN 62230:2007+A1:2014 - 2 -EN 62230:2007/A1:2014 - 2 - Foreword The text of document 20/1462/

15、FDIS, future IEC 62230:2006/A1, prepared by IEC/TC 20 “Electric cables“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62230:2007/A1:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an ident

16、ical national standard or by endorsement (dop) 2014-10-01 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-01-01 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/

17、or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62230:2006/A1:2013 was approved by CENELEC as a European Standard without any modification. Foreword to amendment A1CONTENTSINTRODUCTION.41Scope.52Types o

18、f voltage waveform.53Procedure 54Equipment64.1Safety.64.2High voltagesource.64.3Voltage monitoringequipment.84.4Fault indicator .94.5Electrodes.94.6Design of electrodes95Test voltages106Sensitivity.106.1AC, d.c.and h.f. voltages106.2Pulsed voltages.116.3Method of assessment.117Calibration127.1Genera

19、l.127.2Verification frequency12AnnexA (informative) Recommended minimum voltage levels.13AnnexB (informative) Example of an artificial faultdevice.15Annex C (informative)Notes on theuse ofsparktesting machines 16Bibliography18Figure 1 Requirements forpulsed waveforms Risetimeof wavefront7Figure 2 Re

20、quirements for pulsed waveforms Fluctuation of peakvalue and pulserepetition rate .7Figure 3 Requirements forpulsed waveforms Pulse duration 8Figure B.1 Needle for use in the artificial faultdevice.15TableA.1 Recommended minimum spark-testvoltages for cables having ratedvoltage (U0) between 300 V an

21、d 3000 V.13 3 EN 62230:2007BS EN 62230:2007+A1:2014EN 62230:2007+A1:2014- 3 -EN 62230:2007/A1:2014 - 2 - Foreword The text of document 20/1462/FDIS, future IEC 62230:2006/A1, prepared by IEC/TC 20 “Electric cables“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62230:20

22、07/A1:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-10-01 latest date by which the national standards conflicting with the document have to be withdrawn (dow

23、) 2017-01-01 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62230:2006/

24、A1:2013 was approved by CENELEC as a European Standard without any modification. (normative) Minimum voltage levelsMinimum spark-test voltages for cables having rated voltage (U0) between 300 V and 3 000 V INTRODUCTION The practice ofusing spark-testersto detect defects in the insulation orsheathing

25、 layers ofelectric cableshas been developed overmanyyears of practical experience.The operation of the equipment using the verification method described in this standard hasproved tobe satisfactory. This method employs an artificial fault simulatorand itsperformance has been shown to be comparable t

26、o that using operational efficacy testsinvolving the detection of artificiallyprepared defects (i.e. faultsinthe insulation/sheathing material)in lengths of cable. 4 EN 62230:2007BS EN 62230:2007+A1:2014EN 62230:2007+A1:2014 - 4 -ELECTRIC CABLES SPARK-TEST METHOD1 Scope The spark-test method specifi

27、ed in this standard is intended for the detection ofdefects in theinsulation or sheathing layers of electric cables. For single core cables withnoouter metalliclayer, the general process is accepted as beingequivalent to subjecting samples of thosecables to a voltage test in water.This standard spec

28、ifies theoperational requirements for the spark-test equipment, as well asthe principal characteristics, functional parameters and calibration procedures for each type oftest equipment. 2 Types of voltage waveform For the purposes of this standard, the typesof voltage waveform used for spark-testing

29、 aredivided into the following groups:a.c. an alternating current (a.c.) voltage of approximately sine-wave form, attheindustrial frequency of 40 Hz to 62 Hz;d.c. adirect current (d.c.)voltage;h.f. an alternating current (a.c.) voltage of approximately sine-wave form, atfrequencies between 500Hz and

30、 1 MHz;pulsed a voltage waveform comprising a fast rise time and highly damped wave-tail, asdefined in 4.2.NOTE Provided the manufacturer can demonstrate equivalent effectiveness, h.f. voltages at frequencies below500 Hz may be used.3 Procedure The insulated conductor or sheathed cable shall be pass

31、ed through an electrode energized atthe test voltage. The method detailedin this standard provides for the application of a.c., d.c.,h.f. and pulsed voltages.The requirements for voltagewaveform, frequencyand testvoltage are given in4.2 and Clause 5. The maximum speedatwhich the cable shall pass thr

32、ough the electrode isdetermined bythe minimum residence time specifiedin 4.6. When used asan alternative to a voltage test in water, it is recommended that the testberestricted to layer thicknesses not greater than 2,0 mmand toa.c. and d.c. test voltages.Therequirements are not applicable to cable i

33、nsulation having a rated voltage (U0) greater than 3 kV. 5 EN 62230:2007ELECTRIC CABLES SPARK-TEST METHOD1 Scope The spark-test method specified in this standard is intended for the detection ofdefects in theinsulation or sheathing layers of electric cables. For single core cables withnoouter metall

34、iclayer, the general process is accepted as beingequivalent to subjecting samples of thosecables to a voltage test in water.This standard specifies theoperational requirements for the spark-test equipment, as well asthe principal characteristics, functional parameters and calibration procedures for

35、each type oftest equipment. 2 Types of voltage waveform For the purposes of this standard, the typesof voltage waveform used for spark-testing aredivided into the following groups:a.c. an alternating current (a.c.) voltage of approximately sine-wave form, attheindustrial frequency of 40 Hz to 62 Hz;

36、d.c. adirect current (d.c.)voltage;h.f. an alternating current (a.c.) voltage of approximately sine-wave form, atfrequencies between 500Hz and 1 MHz;pulsed a voltage waveform comprising a fast rise time and highly damped wave-tail, asdefined in 4.2.NOTE Provided the manufacturer can demonstrate equi

37、valent effectiveness, h.f. voltages at frequencies below500 Hz may be used.3 Procedure The insulated conductor or sheathed cable shall be passed through an electrode energized atthe test voltage. The method detailedin this standard provides for the application of a.c., d.c.,h.f. and pulsed voltages.

38、The requirements for voltagewaveform, frequencyand testvoltage are given in4.2 and Clause 5. The maximum speedatwhich the cable shall pass through the electrode isdetermined bythe minimum residence time specifiedin 4.6. When used asan alternative to a voltage test in water, it is recommended that th

39、e testberestricted to layer thicknesses not greater than 2,0 mmand toa.c. and d.c. test voltages.Therequirements are not applicable to cable insulation having a rated voltage (U0) greater than 3 kV. 5 EN 62230:2007volBS EN 62230:2007+A1:2014EN 62230:2007+A1:2014- 5 -The spark-test method specified i

40、n 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 samples of those cables to a voltage test in water When used as an

41、alternative to a voltage test in water, the test shall be restricted to layer thicknesses not greater than 2,0 mm unless otherwise specified in the cable standard Only the ac or dc voltage waveforms shall be usedAnnexA provides recommended voltages for each voltage waveform, to be used in theabsence

42、 of any alternative voltages in the relevant cable standard. 4 Equipment4.1 Safety To limit the effect of electric shock to personnel, for all types of voltage source, the equipmentshall be constructed insuch a way that the short-circuit current is limited to less than 10 mAr.m.s. orequivalent.This

43、requirement is additional to, ormay besuperseded by, any national regulation that prevails atthe time. NOTE Guidance on the limiting of shock currents can be found in IEC 60479-1 and IEC 60479-2.Further aspects of operational safety are given in Annex C. 4.2 High voltage sourceThe high-voltage elect

44、rode shallbe supplied in one of the following forms, as defined inClause 2: a.c., d.c., h.f. or pulsed.Fora 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 pol

45、arity, the other pole being earthed. The requirements for pulsedwaveforms are presented in Figures 1, 2 and 3. Forpulsed waveforms, the rise time of the wave front shall reach 90 % of the specified peakvalue in less than 75 s see Figure 1. Fluctuationsof the actual peak value, due tovariations of in

46、put power intothe generator, shall not exceed 2 % of the specified peak value see Figure2. Thepeak value shall not showmore than 5 % reduction in theevent of anincrease ofcapacitive load of50 pF, during the operation,froman initial load of 25 pFbetweenelectrode and instrument ground. The time thatea

47、ch pulse remains at avoltage greater than80%of the specified peak voltage shall be between 20 s and 100 s see Figure 3. Thepulse repetition frequency shall begreater than 170 per secondand less than 500 per second. This corresponds to pulse separations between 2 000 s and 5 880 s.Visible or audible

48、corona shall be evident in the electrode structure when operatingat thespecified voltage. 6 EN 62230:2007BS EN 62230:2007+A1:2014EN 62230:2007+A1:2014 - 6 -Annex A provides minimum voltages for each voltage waveform, to be used in the absence of any alternative voltages in the relevant cable standard100 %90 %23sIEC 948/061 Key1 actual voltage 2 range of rise time ofwavefront3 maximum 75 s Figure 1Requirements for pulsed waveforms Rise time of wavefront102 %3s100 %98 %2 IEC 949/06