1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationLow-voltage surge protective devicesPart 11: Surge protective devices connected to low-voltage power systems Requirements and test methodsBS EN 61643-11:2012National forewordThis
2、 British Standard is the UK implementation of EN 61643-11:2012. It is derived from IEC 61643-11:2012. It supersedes BS EN 61643-11:2002 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee PEL/37, Surge Arresters High Voltage, to Subcommittee PEL/37/1, Surg
3、e Arresters Low Voltage.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012
4、Published by BSI Standards Limited 2012 ISBN 978 0 580 54739 3 ICS 29.240.01; 29.240.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendment
5、s issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61643-11:2012EUROPEAN STANDARD EN 61643-11 NORME EUROPENNE EUROPISCHE NORM October 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr El
6、ektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61643-11:2012 E ICS 29.240; 29.240.10 Supersedes EN 61643-11:2002 + A11:2007English version Low-vo
7、ltage surge protective devices - Part 11: Surge protective devices connected to low-voltage power systems - Requirements and test methods (IEC 61643-11:2011, modified) Parafoudres basse tension - Partie 11: Parafoudres connects aux systmes basse tension - Exigences et mthodes dessai (CEI 61643-11:20
8、11, modifie) berspannungsschutzgerte fr Niederspannung - Teil 11: berspannungsschutzgerte fr den Einsatz in Niederspannungsanlagen - Anforderungen und Prfungen (IEC 61643-11:2011, modifiziert) This European Standard was approved by CENELEC on 2012-08-27. CENELEC members are bound to comply with the
9、CEN/CENELEC Internal Regulations which 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 CEN-CENELEC Management
10、Centre or to any CENELEC member. This European 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 CEN-CENELEC Management Centre has the same s
11、tatus as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithua
12、nia, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 61643-11:2012EN 61643-11:2012 - 2 - Foreword This document (EN 61643-11:2012) consists of the text of IEC 61643-11:2011 prepared by IEC/SC
13、37A “Low-voltage surge protective devices“, together with the common modifications prepared by CLC/TC 37A “Low voltage surge protective devices“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard
14、 or by endorsement (dop) 2013-08-27 latest date by which the national standards conflictingwith this document have to be withdrawn (dow) 2015-08-27 This document supersedes EN 61643-11:2002 + A11:2007. The main changes with respect of EN 61643-11:2002 + A11:2007 are the complete restructuring and im
15、provement of the test procedures and test sequences. Clauses, subclauses, notes, tables, figures and annexes which are additional to those in IEC 61643-11:2011 are prefixed “Z”. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENE
16、LEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC) _ BS EN 61643-11:2012- 3 - EN 61643-11:2012 Endo
17、rsement notice The text of the International Standard IEC 61643-11:2011 was approved by CENELEC as a European Standard with agreed common modifications. COMMON MODIFICATIONS Scope Modify the Scope as follows: This part of EN 61643 is applicable to devices for surge protection against indirect and di
18、rect effects of lightning or other transient overvoltages. These devices are called Surge Protective Devices (SPD). These devices are designed to be connected to 50 Hz a.c. power circuits, and equipment rated up to 1 000 V r.m.s. Performance characteristics, safety requirements, standard methods for
19、 testing and ratings are established. These devices contain at least one nonlinear component and are intended to limit surge voltages and divert surge currents. 3.1.14 Modify the note as follows: - the measured limiting voltage, determined for front-of-wave sparkover (if applicable) and the measured
20、 limiting voltage, determined from the residual voltage measurements up to Inand/or Iimprespectively for test classes II and/or I - the measured limiting voltage determined for the combination wave measurements up to Uocfor test class III. 3.1.28 Modify the definition as follows: SPD disconnector (d
21、isconnector) device for disconnecting an SPD, or part of an SPD, from the power system in the event of SPD failure NOTE This disconnecting device is not required to have isolating capability for safety purposes. It is to prevent a persistent fault on the system and is used to give an indication of a
22、n SPDs failure. Disconnectors can be either internal (built in) or external (required by the manufacturer) or both. There may be more than one disconnector function, for example an over-current protection function and a thermal protection function. These functions may be in separate units. 3.1.36 Mo
23、dify the heading definition as follows: sparkover voltage or trigger voltage of a voltage switching SPD 3.1.39 Add a note to the definition: NOTE According to installation standard HD 60364-5-534, Ifishall be equal to Isccr. 4.1 Modify the subclause as follows: Frequency range is from 47 Hz to 53 Hz
24、 a.c. BS EN 61643-11:2012EN 61643-11:2012 - 4 - 5.3 Replace 5.3 by the following: Types 1, 2 and 3 SPDs- Class I, II and III tests Information required for class I, II and class III tests is given in Table 2. Table 2 Tests of types 1, 2 and 3 SPDs Type of SPD Tests Required information Test procedur
25、es (see subclauses) Type 1 Class I Iimp8.1.1; 8.1.2; 8.1.3 Type 2 Class II In8.1.2; 8.1.3 Type 3 Class III Uoc8.1.4; 8.1.4.1 5.7.1.3 Modify the title as follows: Both (one part internal and one part external) 5.8 Delete text: According to IP code of IEC 60529. 5.10.1 Modify the subclause as follows:
26、 AC between 47 Hz and 53 Hz. 5.10.2 Modify the subclause as follows: AC other than the range of 47 Hz to 53 Hz. 6 Replace complete clause by: void Table 1 Delete row k dealing with k (trip current factor) 7.1.1 Modify a4) as follows: The SPD type and discharge parameters for each mode of protection
27、declared by the manufacturer and printed next to each other: for Type 1: “Type 1” and “Iimp“ and the value in kA, and/or “T1“ (T1 in a square) and “Iimp“ and the value in kA (e.g. T1 Iimp: 10 kA); for Type 2: “Type 2” and “In“ and the value in kA, and/or “T2“(T2 in a square) and “In“ and the value i
28、n kA (e.g. T2 In: 10 kA); for Type 3: “Type 3” and “Uoc“ and the value in kV, and/or“T3“(T3 in a square) and “Uoc“ and the value in kV (e.g. T3 Uoc: 5 kV); 7.1.1 Modify last paragraph of a8) as follows: An SPD may be classified according to more than one test class (e.g. Type 1 T1 and Type2 T2). In
29、this case, the tests required for all declared test classes shall be performed. If in such case the manufacturer declares only one protection level, only the highest protection level shall appear in the marking. BS EN 61643-11:2012- 5 - EN 61643-11:2012 7.1.1 Modify b10) to read b10) void 7.1.1 Modi
30、fy b14) to read b14) Imax, (if declared by the manufacturer). 7.1.1 Modify c7) to read c7) void 7.2.2 Add a 3rdparagraph: This test is not performed on SPDs for connection N-PE only. 7.2.4 Add after the first paragraph: The SPD shall be changes in its characteristics. “In addition voltage switching
31、type SPDs or combination type SPDs shall be able to interrupt any follow current up to the short-circuit current rating (Isccr).” 7.2.5.3 Modify the 2ndparagraph to read: Compliance is checked by the test in accordance with 8.3.5.3 and 8.3.5.3.2. 7.2.5.3 Remove the 3rdparagraph 7.2.5.4 Replace the 2
32、ndparagraph by: A status indicator may be composed of two parts (one of which is not replaced when e.g. a plug module is changed), linked by a coupling mechanism which can be mechanical, optical, audio, electromagnetic, etc. The part of the status indicator which is not replaced (e.g. base part of s
33、ocket) shall be capable of operating at least 50 times 7.4.5.1 Replace reference to IEC 61000 series by reference to EN 61000-6-1. 7.4.5.2 Replace reference to IEC 61000 series by reference to EN 61000-6-3. 7.6.1.2 Add new requirement: 7.6.1.2 Maximum discharge current ImaxIf the manufacturer declar
34、es Imaxthis parameter shall be tested in accordance with the test in 8.3.3.1. 7.6.1.3 Add new requirement: 7.6.1.3 Vibration and shock Information on vibration and shock tests for transportation and special applications can be found in Annex ZB. 8 Modify the note as follows: NOTE For some tests, spe
35、cial prepared samples are required. BS EN 61643-11:2012EN 61643-11:2012 - 6 - 8.1 Add the following Note after the 11thparagraph (second bullet): NOTE Tissue paper: thin, soft and rather strong paper, generally used to wrap breakable objects and whose weight stands between 12 g/m and 25 g/m. 8.1 Cor
36、rect miss spelling at the end of 2ndline of the 10thparagraph: . is required for the L-PE . (the t of the word the is missing) Table 3 Add footnote dto the line “Operating duty test” in Table 3. Table 3 Add footnote dto read as follows (bottom of Table 3): d For the whole operating duty test (includ
37、ing the additional duty test, if applicable) one separate set of samples may be used. Table 3 Replace the test description in test sequence 7 “For SPDs classified outdoor“ to read: Environmental tests for outdoor SPDs Table 3 Replace in the line of test sequence 7 “O” by “-“ Delete “O = optional” in
38、 Table 3 (bottom) Table 3 Add after Thermal stability “c” Table 4, E criteria Modify second paragraph as follows: The SPD shall be connected as for normal use according to the manufacturers instructions to a power supply at the reference test voltage (UREF). The current that flows through each termi
39、nal is measured. Its resistive component (momentary value of current measured at the crest of the voltage sine wave) shall not exceed a value of 1 mA, or the total current shall not have changed by more than 20 % compared to the initial value determined at the beginning of the relevant test sequence
40、. Table 4, E criteria Modify fourth paragraph as follows: In addition, for SPD modes connected N-PE only the current through the PE-terminal shall be measured, whereas the terminals are connected to a power supply at the maximum continuous operating voltage (Uc). Its resistive component (momentary v
41、alue of current measured at the crest of the voltage sine wave) shall not exceed a value of 1 mA, or the total current shall not have changed by more than 20 % compared to the initial value determined at the beginning of the relevant test sequence. Table 5 Delete line 8.3.5.3.18.3.2 Replace the 1stp
42、aragraph to read: All modes of protection of the SPD shall be connected as for normal use according to the manufacturers instructions. The line to PE voltage of the supply system shall be adjusted to the reference test voltage UREF. BS EN 61643-11:2012- 7 - EN 61643-11:2012 8.3.3 Replace Figure 5 by
43、: StartTest to measure the residual voltage with 8/20 current impulse (see 8.3.3.1) Is there a switching component? (see 7.1.1d1) Front of wave sparkover test (see 8.3.3.2) Determine the measured limiting voltage Tests completedCheck that the measured limiting voltage does not exceed the voltage pro
44、tection level UPas declared by the manufacturer. Pass criteria in 8.3.3.4Test to measure the limiting voltage with the combination wave (see 8.3.3.3) What is the classtest? no yes Class I or II Class III BS EN 61643-11:2012EN 61643-11:2012 - 8 - 8.3.3.1 Replace the whole clause by Residual voltage w
45、ith 8/20 current impulses a) When testing SPDs to class I, 8/20 current impulses with a sequence of crest values of approximately 0,1; 0,2; 0,5; 1,0 times the crest value of Iimpshall be applied. When testing SPDs to class II, 8/20 current impulses with a sequence of crest values of approximately 0,
46、1; 0,2; 0,5; 1,0 times Inshall be applied. If the SPD contains only voltage-limiting components, this test needs only to be performed at crest values of Iimpfor test class I or Infor test class II. One sequence of positive polarity and one sequence of negative polarity are applied to the SPD. b) Whe
47、n Imaxis declared by the manufacturer an additional 8/20 current impulse with a crest value of Imaxshall be applied at the polarity that showed higher residual voltages in the previous tests a). c) The interval between individual impulses shall be long enough for the sample to cool down to ambient t
48、emperature. d) A current and a voltage oscillogram shall be recorded for each impulse. If relevant, the (absolute) crest values shall be plotted into a discharge current versus residual voltage diagram to Inor IimpA curve which best fits the data points shall be drawn. There shall be sufficient poin
49、ts on the curve to ensure that there are no significant deviations on the curve up to Inor Iimp. e) The residual voltage used for determining the measured limiting voltage is the highest voltage value corresponding to the range of currents for class I: up to Iimp; class II: up to In.NOTE The residual voltage is the highest crest value measured during surge current flow. Any high frequency disturbances and spikes before and during current flow caused by specific generator design, like crowbar generators, are
