1、BRITISH STANDARDBS EN 60255-22-3: 2008Measuring relays and protection equipment Part 22-3: Electrical disturbance tests Radiated electromagnetic field immunityICS 29.120.70g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51
2、g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60255-22-3:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2008 BSI 2008ISBN 978 0 580 56752 0National forewordThis British Standard is the UK implem
3、entation of EN 60255-22-3:2008. It is identical to IEC 60255-22-3:2007. It supersedes BS EN 60255-22-3:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PEL/95, Measuring relays and protection systems.A list of organizations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 comm
4、ittee 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.Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued
5、since publicationDate CommentsEUROPEAN STANDARD EN 60255-22-3 NORME EUROPENNE EUROPISCHE NORM September 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de St
6、assart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60255-22-3:2008 E ICS 29.120.70 Supersedes EN 60255-22-3:2000English version Measuring relays and protection equipment - Part 22-3: Electrical distu
7、rbance tests - Radiated electromagnetic field immunity (IEC 60255-22-3:2007) Relais de mesure et dispositifs de protection - Partie 22-3: Essais dinfluence lectrique -Immunit aux champs lectromagntiques rayonns (CEI 60255-22-3:2007) Messrelais und Schutzeinrichtungen - Teil 22-3: Prfung der elektris
8、chen Strfestigkeit - Prfung der Strfestigkeit gegen elektromagnetische Felder (IEC 60255-22-3:2007) This European Standard was approved by CENELEC on 2008-08-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Stan
9、dard 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 Standard exists in three official versions (English, Fre
10、nch, 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 national electrotechnical committees of Austria, Belgium,
11、 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, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The t
12、ext of document 95/209/FDIS, future edition 3 of IEC 60255-22-3, prepared by IEC TC 95, Measuring relays and protection equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60255-22-3 on 2008-08-01. This European Standard supersedes EN 60255-22-3:2000. The main
13、 change with respect to EN 60255-22-3:2000 concerns the extension of the frequency range to be tested. 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) 2009-05-01 latest date b
14、y which the national standards conflicting with the EN have to be withdrawn (dow) 2011-08-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60255-22-3:2007 was approved by CENELEC as a European Standard without any modification. In the official ve
15、rsion, for Bibliography, the following notes have to be added for the standards indicated: IEC 60255-22-6 NOTE Harmonized as EN 60255-22-6:2001 (not modified). IEC 60255-26 NOTE Harmonized as EN 60255-26:2005 (not modified). IEC 61000-4-6 NOTE Harmonized as EN 61000-4-6:2007 (not modified). IEC 6100
16、0-4-12 NOTE Harmonized as EN 61000-4-12:2006 (not modified). IEC 61000-6-2 NOTE Harmonized as EN 61000-6-2:2005 (not modified). _ BS EN 60255-22-3:2008 2 CONTENTS 1 Scope and object4 2 Normative references4 3 Terms and definitions .5 4 Test severity level.5 5 Test equipment.5 6 Test set-up .5 7 Test
17、 procedure .6 7.1 Frequency sweep.6 7.2 Spot frequencies7 8 Criteria for acceptance7 9 Test report8 Bibliography11 Figure 1 Example of a test set-up for floor standing equipment .9 Figure 2 Example of a test set-up for single equipment.10 Table 1 Spot frequencies7 Table 2 Criteria for acceptance.8 B
18、S EN 60255-22-3:2008 3 Annex ZA (normative) Normative references to international publications with theircorresponding European publications.12MEASURING RELAYS AND PROTECTION EQUIPMENT Part 22-3: Electrical disturbance tests Radiated electromagnetic field immunity 1 Scope and object This part of IEC
19、 60255 is based on IEC 61000-4-3, referring to that publication where applicable, and specifies the general requirements for radiated electromagnetic field immunity tests for measuring relays and protection equipment for power system protection, including the control, monitoring and process interfac
20、e equipment used with those systems. The objective of the tests is to confirm that the equipment under test (EUT) will operate correctly when energised and subjected to an electromagnetic field from a radiation source operating within the frequency range 80 MHz to 2,7 GHz. NOTE 1 The product standar
21、d IEC 60255-22-6 (based on IEC 61000-4-6) establishes the immunity of measuring relays and protection equipment over the frequency range of 0,15 MHz to 80 MHz. NOTE 2 The test methods defined in this standard are structured for the primary objective of establishing adequate repeatability of results
22、at various test facilities for qualitative analysis of effects. The test methods using a portable transmitter1are not taken into consideration here because the EMC directive now specifies a sweep test, calibrated field strengths must be used and the portable transmitter test is not generally reprodu
23、cible. The requirements specified in this standard are applicable to measuring relays and protection equipment in a new condition, and all tests specified are type tests only. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated
24、references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050(161), International Electrotechnical Vocabulary (IEV) Chapter 161: Electromagnetic compatibility IEC 60050(446), International Electrotechni
25、cal Vocabulary (IEV) Chapter 446: Electrical relays IEC 60050(448), International Electrotechnical Vocabulary (IEV) Chapter 448: Power system protection IEC 60255-6, Electrical relays Part 6: Measuring relays and protection equipment IEC 61000-4-3, Electromagnetic compatibility (EMC) Part 4-3: Testi
26、ng and measurement techniques Radiated, radio-frequency, electromagnetic field immunity test _ 1Specified in the first edition (1989) of this standard. BS EN 60255-22-3:2008 4 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050(161), IEC 60050(446)
27、 and IEC 60050(448), and the following apply. 3.1 auxiliary equipment equipment necessary to provide the EUT with the signals required for normal operation, and equipment used to verify the performance of the EUT 3.2 equipment under test EUT equipment which may be either a measuring relay or a prote
28、ction equipment 3.3 port particular interface of the EUT with electromagnetic environment IEV 131-12-60, modified and IEC 61000-4-12, 3.7, modified 4 Test severity level The field strength, prior to modulation being applied, shall be 10 V/m, measured in accordance with IEC 61000-4-3. NOTE This level
29、 of field strength is applicable to equipment used in a severe electromagnetic radiation environment, for example levels typical of transceivers that can be operated close to the equipment, but not closer than 1 m. 5 Test equipment The recommended test equipment is described in IEC 61000-4-3. This i
30、ncludes a description of the test facility and calibration of the field. 6 Test set-up The general test set-up should be as specified in IEC 61000-4-3. Specific details for measuring relays and protection equipment are as follows. Where possible, it is recommended that all auxiliary equipment should
31、 be located outside the boundary of the test site. Normally, the EUT shall be individually tested, with the EUT placed on a non-conducting table 0,8 m above the ground plane. All parts of the EUT shall be at least 0,8 m from any metal surface. Where the EUT is exclusively mounted in a cubicle, the t
32、ests may be conducted with the EUT in the cubicle. The cubicle should be placed on a non-conducting support, and for practical reasons a distance of approximately 0,1 m is recommended between the cubicle and the ground plane. Where earth connections are required for safety purposes, they shall be co
33、nnected to the ground plane. Where they are not otherwise provided or specified by the manufacturer, earth connections shall be, where practicable, 1 m long and shall run parallel to, and at a distance of not more than 0,1 m from, the auxiliary power supply connection. BS EN 60255-22-3:2008 5 Earth
34、connections for functional purposes (e.g. for EMC) either specified or supplied by the manufacturer for connection to the same terminal as the safety earth connection shall also be connected to the ground plane. The length of these connections shall be as short as possible. Interconnecting cables sh
35、all be as follows: the manufacturers specified wiring types and connectors shall be used; if the manufacturers specification requires a wiring length of less than or equal to 3 m, then the specified length shall be used; if the specified length is greater than 3 m, or is not specified, then the leng
36、th exposed to the electromagnetic field shall be 1 m. The remainder is decoupled, for instance via lossy radio frequency ferrite tubes or low-inductive bundling of the cable. The decoupling method shall not impair the operation of the EUT. The length of exposed wiring is run in a configuration which
37、 essentially simulates normal wiring, i.e. the wiring is run to the side of the EUT and then either up or down. Typical EUT set-ups for measuring relays and protection equipment are shown in Figures 1 and 2, which are based on the equivalent figures of IEC 61000-4-3. 7 Test procedure The tests shall
38、 be carried out under the reference conditions given in IEC 60255-6. The tests shall be performed with the antenna facing each side of the EUT. When technically justified, the EUT can be tested by exposing fewer sides to the generating antenna. The polarisation of the field generated by the antenna
39、necessitates testing each side twice, once with the antenna positioned vertically, and once with the antenna positioned horizontally. For practical reasons, the effect of this disturbance on the relay in its transitional or operate state is only considered at certain spot frequencies as specified in
40、 7.2. The following tests are to be performed to confirm that a) the EUT will have normal performance within the specification limits when energised and subjected to an electromagnetic field from a radiation source operating within the swept frequency ranges 80 MHz to 1 GHz and 1,4 GHz to 2,7 GHz; b
41、) the EUT is capable of correct operation and reset in the presence of an electromagnetic field from a radiation source at given spot frequencies within the range 80 MHz to 2,7 GHz. 7.1 Frequency sweep Time delay settings of the EUT shall be set to their minimum practical values as defined by their
42、intended application. The tests shall be carried out with auxiliary energising quantities applied to the appropriate circuits, using input energising quantities equal to rated values. The values of the input energising quantities shall be within twice the assigned error of the transitional state. If
43、 the rated conditions of the EUT mean that the input energising quantity is much lower than the relay operate value, the tests shall be performed at the continuous thermal withstand value. BS EN 60255-22-3:2008 6 The frequency range is swept from 80 MHz to 1 GHz and 1,4 GHz to 2,7 GHz, with the sign
44、al 80 % amplitude-modulated with a 1 kHz sinewave, pausing to adjust the radio frequency signal level or to switch oscillators and antennas as necessary. The rate of sweep shall not exceed 1,5 103decades per second. Where the frequency range is swept incrementally, the step size shall not exceed 1 %
45、 of fundamental, with linear interpolation between calibrated points. The dwell time at each frequency shall be 0,5 s. In those cases where the EUT operate time is greater than 0,5 s, the dwell time shall be increased until operation of the EUT is possible. NOTE The expression “not exceed 1 % of fun
46、damental” means that the frequency of each step is less than, or equal to, the frequency of the previous step after multiplication by a factor of 1,01 (for a 1 % step size). 7.2 Spot frequencies The tests shall be carried out with auxiliary energising quantities applied to the appropriate circuits w
47、ith values equal to rated conditions. Table 1 specifies the spot frequencies which shall be used. Table 1 Spot frequencies Test Spot frequency MHz Tolerance Modulation (1 kHz sinewave) Duty cycle 1 80 0,5 % 80 % 100 % 2 160 0,5 % 80 % 100 % 3 380 0,5 % 80 % 100 % 4 450 0,5 % 80 % 100 % 5 900 5 MHz 8
48、0 % 100 % 6 1 850 5 MHz 80 % 100 % 7 2 150 5 MHz 80 % 100 % During each spot frequency test, the input energising quantities shall be adjusted to cause the EUT to change from the normal energised state to the operated state, and held until the EUT operates correctly. The input energising quantities
49、shall then be re-adjusted to cause the EUT to reset. The testing time at each spot frequency should be not less than 10 s. 8 Criteria for acceptance The test result is positive if the EUT shows its immunity throughout the entire period of the application of the tests. Table 2 lists the important functions which could apply to a measuring relay or protection equipment. These should be monitored during both sweep and spot frequency testing. BS EN 60255-22-3:2008 7 Table 2 Criter
