EN 61442-2005 en Test methods for accessories for power cables with rated voltages from 6 kV (Um = 7 2 kV) up to 36 kV (Um = 42 kV)《额定电压6-36kV(Um=7 2-42 kV)的电力电缆附件的试验方法 IEC 61442 2.pdf

1、BRITISH STANDARDBS EN 61442:2005Test methods for accessories for power cables with rated voltages from 6 kV (Um= 7,2 kV) up to 36 kV (Um= 42 kV) The European Standard EN 61442:2005 has the status of a British StandardICS 19.080; 290.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g

2、44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 61442:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 September 2005 BSI 29 September 2005

3、ISBN 0 580 46194 7National forewordThis British Standard is the official English language version of EN 61442:2005. It was derived by CENELEC from IEC 61442:2005. Together with BS EN 50393 (due for publication during 2005) it partially supersedes BS 7888-2:1998 which will be withdrawn on 1 July 2006

4、.The CENELEC common modifications have been implemented at the appropriate places in the text. The start and finish of each common modification is indicated in the text by tags . Where a common modification has been introduced by amendment, the tags carry the number of the amendment. For example, th

5、e common modifications introduced by CENELEC amendment A11 are indicated by .The UK participation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/11, Cable accessories, which has the responsibility to:A list of organizations represented on this

6、 subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using

7、 the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from

8、legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Sum

9、mary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 31 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 6

10、1442 NORME EUROPENNE EUROPISCHE NORM April 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels ICS 19.080; 290.060.20 Supersede

11、s HD 628 S1:1996 + A1:2001English version Test methods for accessories for power cables with rated voltages from 6 kV (Um= 7,2 kV) up to 36 kV (Um= 42 kV) (IEC 61442:2005, modified) Mthodes dessais des accessoires de cbles dnergie de tensions assignes de 6 kV (Um= 7,2 kV) 36 kV (Um= 42 kV) (CEI 6144

12、2:2005, modifie) Prfverfahren fr Starkstromkabelgarnituren mit einer Nennspannung von 6 kV (Um= 7,2 kV) bis 36 kV (Um= 42 kV) (IEC 61442:2005, modifiziert) This European Standard was approved by CENELEC on 2005-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations whic

13、h stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European

14、Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the n

15、ational electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and Unite

16、d Kingdom. 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61442:2005 E EN 61442:2005 2 Foreword The text of document 20/748/FDIS, future edition 2 of IEC 61442, prepared by IEC TC 20, Electric cables, was submitted to the IE

17、C-CENELEC parallel vote and was approved by CENELEC as EN 61442 on 2005-03-01. A draft amendment, prepared by the Technical Committee CENELEC TC 20, Electric cables, was submitted to the formal vote and was approved by CENELEC for inclusion into EN 61442 on 2005-03-01. This European Standard superse

18、des HD 628 S1:1996 + A1:2001. In comparison with HD 628, the impact test at low temperature has been deleted. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-01-01 latest

19、 date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61442:2005 was approved by CENELEC as a European Standard with agreed common modifications as given

20、below. COMMON MODIFICATIONS Title Amend the title to show the following upper voltage limit: “ with rated voltages from 6 kV (Um= 7,2 kV) up to 36 kV (Um= 42 kV)” 1 Scope Amend the voltage reference in paragraph 1 to read: “ with rated voltages from 6 kV (Um= 7,2 kV) up to 36 kV (Um= 42 kV), ” _ 3 E

21、N 61442:2005 CONTENTS 1 Scope 5 2 Normative references .5 3 Test installations and conditions .6 4 AC voltage tests.6 4.1 Dry test for all accessories 6 4.2 Wet test for outdoor terminations .6 4.3 Test in water for stop ends 7 5 DC voltage tests.7 5.1 Installation 7 5.2 Method7 6 Impulse voltage te

22、sts7 6.1 Installation 7 6.2 Method7 6.3 Test at elevated temperature .7 7 Partial discharge test8 7.1 Method8 7.2 Test at elevated temperature .8 8 Tests at elevated temperature 8 8.1 Installation and connection 8 8.2 Measurement of temperature .8 9 Heating cycles voltage test.12 9.1 Installation an

23、d method .12 9.2 Test in air12 9.3 Test in water .12 9.4 Immersion test for outdoor terminations .13 10 Thermal short-circuit test (screen) 13 10.1 Installation 13 10.2 Method 13 11 Thermal short-circuit test (conductor) .14 11.1 Installation 14 11.2 Method 14 12 Dynamic short-circuit test .15 12.1

24、Installation 15 12.2 Method 15 13 Humidity and salt fog tests15 13.1 Apparatus .15 13.2 Installation 16 13.3 Method 16 14 Impact test at ambient temperature.16 15 Screen resistance measurement.17 15.1 Installation 18 15.2 Method 18 16 Screen leakage current measurement.18 16.1 Installation 18 EN 614

25、42:2005 4 16.2 Method 18 17 Screen fault current initiation test .19 17.1 Installation 19 17.2 Method 20 18 Operating force test21 18.1 Installation 21 18.2 Method 21 19 Operating eye test21 19.1 Installation 21 19.2 Method 21 20 Capacitive test point performance.22 20.1 Installation 22 20.2 Test me

26、thod 22 Annex A (informative) Determination of the cable conductor temperature .23 A.1 Purpose 23 A.2 Calibration of the test cable conductor temperature23 A.3 Heating for accessory test .25 Annex B (informative) Details of the test chamber and spray equipment for humidity and salt fog tests28 B.1 T

27、est chamber 28 B.2 Spray equipment for humidity and salt fog tests .28 B.3 High voltage transformers29 Annex ZA (normative) Normative references to international publications with their corresponding European publications 30 Bibliography .31 Figure 1 Terminations tested in air.9 Figure 2 Joints test

28、ed in air9 Figure 3 Separable connectors tested in air .10 Figure 4 Joints tested under water .10 Figure 5 Separable connectors tested under water.11 Figure 6 Outdoor terminations tested under water 11 Figure 7 Heating cycle .12 Figure 8 Typical impact test apparatus for joints.17 Figure 9 Test arra

29、ngement for the screen leakage current measurement 19 Figure 10 Test arrangement for screen fault current initiation test.20 Figure A.1 Reference cable24 Figure A.2 Arrangement of the thermocouples24 Figure A.3 Current/temperatures curves.26 5 EN 61442:2005 TEST METHODS FOR ACCESSORIES FOR POWER CAB

30、LES WITH RATED VOLTAGES FROM 6 kV (Um m = 42 kV) 1 Scope This International Standard specifies the test methods to be used for type testing accessories for power cables with rated voltages from 6 kV (Um= 7,2 kV) up to 36 kV (Um= 42 kV). Test methods are specified for accessories for extruded and pap

31、er insulated cables according to IEC 60502-2 and IEC 60055-1 respectively. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referen

32、ced document (including amendments) applies. IEC 60055-1: Paper-insulated metal-sheathed cables for rated voltages up to 18/30 kV (with copper or aluminium conductors and excluding gas-pressure and oil-filled cables) Part 1: Tests on cables and their accessories IEC 60060-1:1989, High-voltage test t

33、echniques Part 1: General definitions and test requirements IEC 60230:1966, Impulse tests on cables and their accessories IEC 60270:2000, High-voltage test techniques Partial discharge measurements IEC 60502-2:2005, Power cables with extruded insulation and their accessories for rated voltages from

34、1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) Part 2: Cables for rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV) IEC 60811-1-2:1985, Common test methods for insulating and sheathing materials of electric and optical cables Part 1: Methods for general application Section Two: Thermal ag

35、eing methods IEC 60885-3:1988, Electrical test methods for electric cables Part 3: Test methods for partial discharge measurements on lengths of extruded power cables IEC 60986:2000, Short-circuit temperature limits of electric cables with rated voltages from 6 kV (Um= 7,2 kV) up to 30 kV (Um= 36 kV

36、) IEC 61238-1:2003, Compression and mechanical connectors for power cables for rated voltages up to 30 kV (Um= 36 kV) Part 1: Test methods and requirements = 7,2 kV) UP TO 36 kV (U EN 61442:2005 6 3 Test installations and conditions 3.1 The test methods described in this standard are intended to be

37、used for type tests. 3.2 Test arrangements and the number of test samples are given in the relevant standard. 3.3 The test conditions are specified in Clauses 4 to 20 of this standard. When they are not, they shall be as specified in the relevant standards. 3.4 Unless otherwise stated, the testing p

38、arameters and the requirements are given in the relevant standard. 3.5 For transition joints (either extruded insulation to extruded insulation or extruded insulation to paper insulation), the testing parameters (voltage and conductor temperature) are those for the lower rated cable. 3.6 The tests s

39、hall be started not less than 24 h after the installation of the accessories on the cable test loops, unless otherwise specified by the manufacturer. The time interval shall be recorded in the test report. 3.7 Cable screens, and armour if any, shall be bonded and earthed at one end only to prevent c

40、irculating currents. 3.8 All parts of an accessory which are normally earthed shall be connected to the cable screen. Any supporting metalwork shall also be earthed. 3.9 Ambient temperature shall be (20 15) C. 3.10 Tap water shall be used for all tests in water. 4 AC voltage tests 4.1 Dry test for a

41、ll accessories 4.1.1 Installation The set(s) of accessories shall be erected with all associated metalwork and fittings. The accessories shall be clean and dry before applying the test voltage. 4.1.2 Method Unless otherwise specified, the test shall be made at ambient temperature, and the procedure

42、for voltage application shall be as specified in Section 5 of IEC 60060-1. 4.2 Wet test for outdoor terminations 4.2.1 Installation The terminations shall be erected in a vertical position, unless they are to be specifically installed in another orientation, with the relative spacing as under servic

43、e conditions and according to manufacturers instructions. 7 EN 61442:2005 4.2.2 Method Unless otherwise specified, the wet test method is as described in 9.1 of IEC 60060-1, and shall be carried out at ambient temperature. 4.3 Test in water for stop ends 4.3.1 Installation The stop ends shall be ins

44、talled in a water tank of such dimensions as to have a height of water of 1,00 m over their top surface, unless otherwise specified. The water shall be at ambient temperature. 02,00 +4.3.2 Method Unless otherwise specified, the procedure for voltage application shall be as specified in IEC 60060-1.

45、5 DC voltage tests 5.1 Installation The set(s) of accessories shall be erected with all associated metalwork and fittings. The accessories shall be clean and dry before applying the test voltage. 5.2 Method A voltage of negative polarity shall be applied to the cable conductor. The test shall be mad

46、e at ambient temperature and the procedure for voltage application shall be as specified in Section 4 of IEC 60060-1. 6 Impulse voltage tests 6.1 Installation For preparation of the test installation, involving metal enclosures and terminal boxes, reference shall be made to the relevant standard. In

47、 the case of three-core accessories (such as three single-core terminations in an enclosure), one phase shall be tested at a time, with the other two phases earthed. 6.2 Method The test shall be conducted according to the procedure given in IEC 60230 (Clause 3 and following). 6.3 Test at elevated te

48、mperature Installation and the measurement of temperature are given in Clause 8 of this standard. The cable conductor shall be heated and stabilized for at least 2 h at a temperature of 5 K to 10 K above the maximum cable conductor temperature in normal operation for extruded insulation cables, EN 6

49、1442:2005 8 0 K to 5 K above the maximum cable conductor temperature in normal operation for paper insulated cables, before and during the impulse test. 7 Partial discharge test This test is only required for accessories for extruded insulation single-core cables and three-core cables with individually semi-conducting screened cores. It is not required for accessories incorporating paper insulated cables. 7.1 Method The test shall be conduc