1、INTERNATIONAL STANDARD IEC 60099-6 First edition 2002-08 Surge arresters Part 6: Surge arresters containing both series and parallel gapped structures Rated 52 kV and less Reference number IEC 60099-6:2002(E)Publication numbering As from 1 January 1997 all IEC publications are issued with a designat
2、ion in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating
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7、ow) for further information. Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00INTERNATIONAL STANDARD IEC 60099-6 First edition 2002-08
8、Surge arresters Part 6: Surge arresters containing both series and parallel gapped structures Rated 52 kV and less IEC 2002 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and micr
9、ofilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch T For price, see current catalogue PRICE CODE Co
10、mmission Electrotechnique Internationale International Electrotechnical Commission 2 60099-6 IEC:2002(E) CONTENTS FOREWORD 4 INTRODUCTION 5 1 General . 6 1.1 Scope. 6 1.2 Normative references . 6 2 Definitions . 7 3 Identification and classification .14 3.1 Arrester identification.14 3.2 Arrester cl
11、assification 14 4 Standard ratings .15 4.1 Standard rated voltages.15 4.2 Standard rated frequencies15 4.3 Standard nominal discharge currents.15 4.4 Service conditions .15 5 Requirements .16 5.1 Insulation withstand of the arrester housing.16 5.2 Reference voltage .16 5.3 Impulse protective levels
12、.16 5.4 Partial discharges16 5.5 Seal leakage16 5.6 Thermal stability 16 5.7 Long duration current impulse withstand16 5.8 Operating duty.17 5.9 Power frequency voltage versus time characteristics of an arrester .17 5.10 Short-circuit withstand .18 5.11 Disconnectors18 5.12 Requirements for internal
13、 and external grading components18 5.13 Power frequency sparkover .18 5.14 Grading current .18 5.15 Weather ageing tests.18 6 General procedures 18 6.1 Measuring equipment and accuracy.18 6.2 Reference voltage measurements19 6.3 Test samples .19 7 Type tests (design tests).19 7.1 General .19 7.2 Ins
14、ulation withstand tests on the arrester housing20 7.3 Impulse protective level tests.21 7.4 Long duration current impulse withstand test .25 7.5 Operating duty tests 27 7.6 Tests of arrester disconnectors33 7.7 Power frequency voltage sparkover tests.35 7.8 Moisture ingress tests35 7.9 Weather agein
15、g tests.3560099-6 IEC:2002(E) 3 8 Routine tests and acceptance tests.36 8.1 Routine tests .36 8.2 Acceptance tests .36 Annex A (normative) Abnormal service conditions39 Annex B (normative) Test to verify thermal equivalency between complete arrester and arrester section 40 Annex C (normative) Proced
16、ure to verify the power frequency voltage versus time characteristics of an arrester.41 Annex D (normative) Artificial pollution testing of metal-oxide surge arresters containing gapped structures 42 Annex E (informative) Typical information given with inquiries and tenders 43 Annex F (informative)
17、Typical maximum protective levels.45 Bibliography46 Figure 1 Power losses of arrester at elevated temperatures vs. time 30 Table 1 Arrester classification and tests .14 Table 2 Steps of rated voltages15 Table 3 Peak currents for switching impulse residual voltage tests.22 Table 4 Parameters for the
18、line discharge test (10 000 A arresters) .26 Table 5 Requirements for the long-duration current impulse test on 5 000 A and 2 500 A arresters27 Table 6 Arrester design and ageing test requirements28 Table 7 Determination of elevated rated and continuous operating voltages.30 Table 8 Requirements for
19、 high current impulses.32 Table 9 Weather ageing test selection35 Table 10 Summary of high current operating duty test (see 7.5.3) 38 Table 11 Thermal stability test .38 Table F.1 Typical maximum protective levels for 10 kA, 5 kA, 2,5 kA and 1,5 kA arresters per unit of rated voltage .45 4 60099-6 I
20、EC:2002(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SURGE ARRESTERS Part 6: Surge arresters containing both series and parallel gapped structures Rated 52 kV and less FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all nat
21、ional electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
22、 Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collab
23、orates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinio
24、n on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides and
25、 they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC
26、Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is drawn
27、to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard lEC 60099-6 has been prepared by lEC technical committee 37: Surge arresters. T
28、he text of this standard is based on the following documents: FDIS Report on voting 37/282/FDIS 37/283/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. Annexes A, B, C and D form an integral part of this standard.
29、 Annexes E and F are for information only. This publication has been drafted in accordance with the ISO/IEC Directives, Part 3. The committee has decided that the contents of this publication will remain unchanged until 2004. At this date, the publication will be reconfirmed; withdrawn; replaced by
30、a revised edition, or amended.60099-6 IEC:2002(E) 5 INTRODUCTION This part of IEC 60099 presents the minimum criteria for the requirements and testing of metal-oxide surge arresters containing gapped structures that are applied to a.c. power systems. Arresters covered by this standard can be applied
31、 to overhead installations in place of the non-linear type arresters covered in lEC 60099-1 and IEC 60099-4. An accelerated ageing procedure is incorporated in the standard to simulate the long-term effects of voltage and temperature on the arrester. This is necessary since during the arresters serv
32、ice life the gaps and resistor elements will have portions of the system power frequency voltage continuously applied across them. 6 60099-6 IEC:2002(E) SURGE ARRESTERS Part 6: Surge arresters containing both series and parallel gapped structures Rated 52 kV and less 1 General 1.1 Scope This part of
33、 IEC 60099 applies to non-linear metal-oxide resistor type surge arresters with spark gaps designed to limit voltage surges on a.c. power circuits. This standard basically applies to all metal-oxide surge arresters with gaps and housed in either porcelain or polymeric housings. This standard specifi
34、es requirements and tests for metal-oxide surge arresters with internal series gaps, with rated voltages 52 kV and below. The following arrester types and ratings are presently under consideration, but are not addressed in this standard. They will not be addressed until more information can be ascer
35、tained on the individual subjects: series gapped arresters above 54 kV; externally gapped arresters, all ratings; shunt gapped arresters, all ratings; line discharge class 2, 3, 4 and 5. 1.2 Normative references The following referenced documents are indispensable for the application of this documen
36、t. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. lEC 60060-1:1989, High-voltage test techniques Part 1: General definitions and test requirements IEC 60060-2:1994, High-voltage test tech
37、niques Part 2: Measuring systems lEC 60099-1:1991, Surge arresters Part 1: Non-linear resistor type gapped surge arresters for a.c. systems lEC 60099-3:1990, Surge arresters Part 3: Artificial pollution testing of surge arresters IEC 60099-4:1991, Surge arresters Part 4: Metal-oxide surge arresters
38、without gaps for a.c. systems Amendment 1 (1998) Amendment 2 (2001) 1 IEC 60270: 2000, High-voltage test techniques Partial discharge measurements _ 1A consolidated edition 1.2 exists (2001) that includes edition 1.0 (1991), its amendment 1 (1998) and amendment 2 (2001).60099-6 IEC:2002(E) 7 2 Defin
39、itions For the purposes of this part of IEC 60099, the following definitions apply. 2.1 metal-oxide surge arrester without gaps arrester having non-linear metal-oxide resistors connected in series and/or in parallel without any integrated series or parallel spark gaps NOTE See 2.55 for metal-oxide s
40、urge arrester with series gapped structures. 2.2 non-linear metal-oxide resistor part of the surge arrester which by its non-linear voltage versus current characteristics acts as a low resistance to overvoltages, thus limiting the voltage across the arrester terminals, and as a high resistance at no
41、rmal power frequency voltage 2.3 internal grading system of an arrester grading impedance, in particular linear/non-linear resistors and/or grading capacitors connected in parallel to one or to a group of non-linear metal-oxide resistors and/or series gap, to control the voltage distribution along t
42、he arrester and/or between the metal oxide resistors and gaps 2.4 grading ring of an arrester metal part usually circular in shape, mounted to modify electrostatically the voltage distribution along the arrester 2.5 section of an arrester complete, suitably assembled part of an arrester necessary to
43、 represent the behaviour of a complete arrester with respect to a particular test NOTE A section of an arrester is not necessarily a unit of an arrester. 2.6 unit of an arrester completely housed part of an arrester which may be connected in series and/or in parallel with other units to construct an
44、 arrester of higher voltage and/or current rating NOTE A unit of an arrester is not necessarily a section of an arrester. 2.7 pressure relief device of an arrester means for relieving internal pressure in an arrester and preventing violent shattering of the housing following prolonged passage of fau
45、lt current or internal flashover of the arrester 2.8 rated voltage of an arrester, U r maximum permissible r.m.s. value of power frequency voltage between its terminals at which it is designed to operate correctly under temporary overvoltage conditions as established in the operating duty tests, see
46、 7.5 NOTE 1 The rated voltage is used as a reference parameter for the specification of operating characteristics. NOTE 2 The rated voltage as defined in this standard is the 10 s power frequency voltage used in the operating duty test after high current. Tests used to establish the voltage rating i
47、n the lEC 60099 series, as well as some national standards, involve the application of repetitive impulses at nominal impulse current with power frequency voltage applied. Attention is drawn to the fact that these two methods used to establish rating do not necessarily produce equivalent values. (A
48、resolution to this discrepancy is under consideration.) 8 60099-6 IEC:2002(E) 2.9 continuous operating voltage of an arrester, U c continuous operating voltage is the designated permissible r.m.s. value of power frequency voltage that may be applied continuously between the arrester terminals in acc
49、ordance with 7.5 2.10 rated frequency of an arrester frequency of the power system on which the arrester is designed to be used 2.11 disruptive discharge phenomena associated with the failure of insulation under electric stress, which include a collapse of voltage and the passage of current NOTE 1 The term applies to electrical breakdowns in solid, liquid and gaseous dielectric, and combinations of th
