1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationMeasuring relays and protection equipment Part 22-5: Electrical disturbance tests Surge immunity testBS EN 60255-22-5:2011National forewordThis British Standard is the UK impleme
2、ntation of EN 60255-22-5:2011. It is identical to IEC 60255-22-5:2008. It supersedes BS EN 60255-22-5:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PEL/95, Measuring relays and protection systems.A list of organizations represented on this commi
3、ttee 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. BSI 2011ISBN 978 0 580 61130 8 ICS 29.120.70Compliance with a British Standard cannot confer immunity from lega
4、l obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60255-22-5:2011EUROPEAN STANDARD EN 60255-22-5 NORME EUROPENNE EUROPISCHE NORM April
5、 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserve
6、d worldwide for CENELEC members. Ref. No. EN 60255-22-5:2011 E ICS 29.120.70 Supersedes EN 60255-22-5:2002English version Measuring relays and protection equipment - Part 22-5: Electrical disturbance tests - Surge immunity test (IEC 60255-22-5:2008) Relais de mesure et dispositifs de protection - Pa
7、rtie 22-5: Essais dinfluence lectrique -Essais dimmunit aux ondes de choc (CEI 60255-22-5:2008) Messrelais und Schutzeinrichtungen - Teil 22-5: Prfung der elektrischen Strfestigkeit - Prfungen der Strfestigkeit gegen Stospannungen (IEC 60255-22-5:2008) This European Standard was approved by CENELEC
8、on 2011-01-02. CENELEC members are bound to comply with the 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 m
9、ay be obtained on application to the Central Secretariat 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 t
10、o the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu
11、ania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60255-22-5:2011EN 60255-22-5:2011 - 2 - Foreword The text of document 95/242/FDIS, future edition 2 of IEC 60255-22-5, prepared by IEC TC 95, Meas
12、uring relays and protection equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60255-22-5 on 2011-01-02. This European Standard supersedes EN 60255-22-5:2002. The main change with respect to EN 60255-22-5:2002 concerns line to earth tests (see Figures 8, 9, 1
13、0). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented at
14、national level by publication of an identical national standard or by endorsement (dop) 2011-10-02 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-01-02 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard
15、 IEC 60255-22-5:2008 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60255-27:2005 NOTE Harmonized as EN 60255-27:2005 (not modified). _ BS EN 60255-22-5:2011- 3 - E
16、N 60255-22-5:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refere
17、nces, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60255-6 1988 Electrical relays - Part 6: Mea
18、suring relays and protection equipment EN 60255-6 1994 IEC 61000-4-5 2005 Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test EN 61000-4-5 2006 BS EN 60255-22-5:2011 2 60255-22-5 IEC:2008 CONTENTS 1 Scope and object. 5 2 Normative references 5 3 T
19、erms and definitions 6 4 Test severity level . 7 5 Test equipment.8 6 Test set-up 8 6.1 General . 8 6.2 Tests applied to auxiliary power supply port .8 6.3 Tests applied to current/voltage transformer inputs .8 6.4 Tests applied to status inputs/output contacts 8 6.5 Tests applied to communications
20、port and other ports using shielded lines. 9 7 Test procedure .9 8 Criteria for acceptance . 9 9 Test report.10 Bibliography. 20 Figure 1 Ports tested in this standard for measuring relays and protection equipment.7 Figure 2 Line to earth tests applied to the auxiliary power supply port11 Figure 3 L
21、ine to line tests applied to the auxiliary power supply port 12 Figure 4 Line to earth tests applied to current/voltage transformer inputs13 Figure 5 Line to line tests applied to current/voltage transformer inputs 14 Figure 6 Line to earth tests applied to status input/output contacts . .15 Figure
22、7 Line to line tests applied to status input/output contacts16 Figure 8 Line to earth tests applied to communications port and other ports using shielded cables with the shields grounded at both ends .17 Figure 9 Line to earth tests applied to communications port and other ports using shielded cable
23、s with the shield connected at one end only. .18 Figure 10 Line to earth tests applied to single and bundled cables in a multi-shield configuration19 Table 1 Test voltages and source impedances for the EUT ports 7 Table 2 Criteria for acceptance .10 BS EN 60255-22-5:201160255-22-5 IEC:2008 5 MEASURI
24、NG RELAYS AND PROTECTION EQUIPMENT Part 22-5: Electrical disturbance tests Surge immunity test 1 Scope and object This part of IEC 60255 is based on IEC 61000-4-5, referring to that publication where applicable, and specifies the general requirements for surge immunity tests for measuring relays and
25、 protection equipment for power system protection, including the control, monitoring and process interface equipment used with those systems. The objective of the tests is to confirm that the equipment under test will operate correctly when energized and subjected to high-energy disturbances on the
26、power and interconnection lines, caused by surge voltages from switching and lightning effects. This standard does not intend to test the capability of the insulation to withstand high-voltage stress. The insulation test is covered by IEC 60255-27. The requirements specified in this standard are app
27、licable to measuring relays and protection equipment in a new condition and all tests specified are type tests only. The object of this standard is to define: terms used; test severity levels; test equipment; test set-up; test procedures; criteria for acceptance; test report requirements. 2 Normativ
28、e 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 referenced document (including any amendments) applies. IEC 60255-6:1988, Electrical relays
29、Part 6: Measuring relays and protection equipment IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) Part 4-5: Testing and measurement techniques Surge immunity test BS EN 60255-22-5:2011 6 60255-22-5 IEC:2008 3 Terms and definitions For the purposes of this document, the following terms and de
30、finitions apply. 3.1 equipment under test EUT equipment which may be either a measuring relay or a protection equipment 3.2 auxiliary equipment equipment necessary to provide the EUT with the signals required for normal operation and equipment to verify the performance of the EUT 3.3 communication p
31、ort interface with a communication and/or control system, using low energy signals, permanently connected to the EUT 3.4 input port port through which the EUT is energised or controlled in order to perform its function(s), for example current and voltage transformer, status (binary) inputs, etc. 3.5
32、 interconnection lines these consist of input/output lines, communication lines and balanced lines 3.6 output port port through which the EUT produces predetermined changes, for example contact, optocoupler, analogue outputs, etc. 3.7 port particular interface of the EUT with the external electromag
33、netic environment (see Figure 1) 3.8 auxiliary power supply port AC or DC auxiliary energising input of the EUT 3.9 transient pertaining to or designating a phenomenon or a quantity which varies between two consecutive states during a time interval short compared with the time-scale of interest IEV
34、161-02-01 3.10 surge a transient wave of electrical current, voltage or power propagating along a line or a circuit and characterized by a rapid increase followed by a slower decrease IEV 161-08-11, modified BS EN 60255-22-5:201160255-22-5 IEC:2008 7 Auxiliary power supply port Output portInput port
35、 Communication portEUT Figure 1 Ports tested in this standard for measuring relays and protection equipment 4 Test severity level The test voltages and coupling network for the appropriate ports are shown in Table 1. Table 1 Test voltages and source impedances for the EUT ports Test conditions line
36、to earth Test conditions line to line aCoupling network cCoupling network cPorts under test Open-circuit test voltage 10 % kV R C F Open-circuit test voltage 10 % kV R C F Auxiliary power supply 0,5 1,0 2,0 10 9 0,5 1,0 0 18 Inputa/outputa0,5 1,0 2,0 40 0,5 0,5 1,0 40 0,5 Communicationb0,5 1,0 0 0 N
37、o test aNo line to line test is advised on input/output ports which, according to the manufacturers functional specification, are always interfacing with twisted pair screened cables. The application of the surge is to simulate a lightning strike and hence the surge is a short duration high energy p
38、ulse. This pulse may cause low impedance high sensitivity circuits, for example current transformers, to produce a start signal when it is applied. If this is the case and the relay has interpreted the pulse correctly as per their design, then the manufacturer shall state any time delays or setting
39、limitations which should be applied to ensure immunity to the surge pulse. bNot applicable for optical fibre communications and EUT communication ports where the specified cable length is less than 10 m as given in the EUTs specification. c Alternative methods of coupling networks are allowed as des
40、cribed in IEC 61000-4-5, for example gas arrestors, where the coupling capacitor would have an effect on the operation of the circuit. The test procedure shall consider the non-linear current-voltage characteristics of the EUT. Thus, the test voltage has to be increased in the steps specified in Tab
41、le 1 from the lowest level to the highest, with the criteria for acceptance being met at each level. The test voltage waveform shall be 1,2/50 s under open-circuit conditions and the current waveform shall be 8/20 s under short-circuit conditions. Unless otherwise stated, no test is advised for port
42、s interfacing with cables whose total length according to the manufacturers documentation is always less than 10 m. NOTE For more severe environments, a severity level of 4 kV for common mode and 2 kV for differential mode may be agreed between manufacturer and user. IEC 2082/08 BS EN 60255-22-5:201
43、1 8 60255-22-5 IEC:2008 5 Test equipment The test equipment is described in IEC 61000-4-5:2005, Clause 6. This includes a description of the test generator, the verification of the characteristics (IEC 61000-4-5:2005, 6.1), and the coupling/decoupling networks (IEC 61000-4-5:2005, 6.3). NOTE Particu
44、lar EUTs may not operate correctly with the decoupling inductances as specified in IEC 61000-4-5. In such cases, the use of decoupling inductances less than the specified values is allowed. The exact value of the inductances used during the surge testing should be stated in the test report. 6 Test s
45、et-up 6.1 General The general test set-ups are specified in IEC 61000-4-5:2005, Clause 7. All auxiliary equipment used to provide the EUT with signals for normal operation, and to verify the correct operation of the EUT, shall be decoupled, so that the test voltage does not affect the auxiliary equi
46、pment. These decoupling networks shall also provide sufficient decoupling so that the specified test waveform may be developed only on the lines under test and does not significantly affect the open-circuit voltage or short-circuit current of the test generator. The connections between the EUT and t
47、he test generator shall be less than 2 m, and, except in the case of the testing of the communications port (see Figure 8), connections between the EUT and the coupling/decoupling networks shall also be less than 2 m. Normally, the EUT shall be individually tested with the EUT placed on an insulatin
48、g support 0,1 m above the ground reference plane, and all parts of the EUT shall be at least 0,5 m from any metallic obstacles. If the EUT is to be tested on a non-conducting table, normally 0,8 m high, the ground reference plane may be placed on the table. Where the EUT is exclusively mounted in a
49、cubicle, the tests may be conducted with the EUT in the cubicle. No surge test shall be performed on the interconnecting cables between EUT which are completely within the cubicle, these being regarded as internal cables of the system. The cubicle should be placed on an insulating support, 0,1 m above the ground reference plane. Interconnecting cables greater than 1 m in length belonging to the EUT shall remain on the insu
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