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1、BRITISH STANDARD BS EN 61557-12:2008 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 12: Performance measuring and monitoring devices (PMD) ICS 17.220.20; 29.080.01; 29.240.01 ? Copyr
2、ight British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:30:16 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN 61557-12:2008 This British Standard was published under the
3、authority of the Standards Policy and Strategy Committee on 30 June 2008 BSI 2008 ISISBN 978 0 580 56285 3 National foreword This British Standard is the UK implementation of EN 61557-12:2008. It is identical to IEC 61557-12:2007. The UK participation in its preparation was entrusted to Technical Co
4、mmittee PEL/85, Measuring equipment for electrical and electromagnetic quantities. 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
5、 correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for
6、 Resale, 08/14/2008 21:30:16 MDTNo reproduction or networking permitted without license from IHS -,-,- EUROPEAN STANDARD EN 61557-12 NORME EUROPENNE EUROPISCHE NORM May 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Ko
7、mitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 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 61557-12:2008 E ICS 17.220.20; 29.080.01; 29.240.01 English version Electrical safe
8、ty in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 12: Performance measuring and monitoring devices (PMD) (IEC 61557-12:2007) Scurit lectrique dans les rseaux de distribution basse tension de 1 000
9、 V c.a. et 1 500 V c.c. - Dispositifs de contrle, de mesure ou de surveillance de mesures de protection - Partie 12: Dispositifs de mesure et de surveillance des performances (PMD) (CEI 61557-12:2007) Elektrische Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V - Gerte zum Prfen, Me
10、ssen oder berwachen von Schutzmanahmen - Teil 12: Kombinierte Gerte zur Messung und berwachung des Betriebsverhaltens (IEC 61557-12:2007) This European Standard was approved by CENELEC on 2008-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co
11、nditions 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 Standard exists in
12、 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 national electrotec
13、hnical committees of Austria, Belgium, 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
14、and the United Kingdom. Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:30:16 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword The text of document 85/311/
15、FDIS, future edition 1 of IEC 61557-12, prepared by IEC TC 85, Measuring equipment for electrical and electromagnetic quantities, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61557-12 on 2008-04-01. This standard is to be used in conjunction with EN 61557-1:2007 (
16、unless otherwise specified). 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) 2009-01-01 latest date by which the national standards conflicting with the EN have to be withdraw
17、n (dow) 2011-04-01 This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directive 2004/108/EC. See Annex ZZ. Annexes ZA and ZZ have been added by CENELEC. _ Endorsement not
18、ice The text of the International Standard IEC 61557-12:2007 was approved by CENELEC as a European Standard without any modification. _ BS EN 61557-12:2008 2 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resal
19、e, 08/14/2008 21:30:16 MDTNo reproduction or networking permitted without license from IHS -,-,- CONTENTS INTRODUCTION.7 1 Scope.8 2 Normative references .9 3 Terms and definitions .10 3.1 General definitions 10 3.2 Definitions related to uncertainty and performance 11 3.3 Definitions related to ele
20、ctric phenomena14 3.4 Definitions related to measurement techniques .17 3.5 Notations.17 3.5.1 Functions 17 3.5.2 Symbols and abbreviations18 3.5.3 Indices 18 4 Requirements.18 4.1 General requirements18 4.2 PMD general architecture19 4.3 Classification of PMD 19 4.4 List of applicable performance c
21、lasses 20 4.4.1 List of applicable function performance classes for PMD without external sensors20 4.4.2 List of applicable system performance classes for PMD with external sensors21 4.5 Operating and reference conditions for PMD .21 4.5.1 Reference conditions.21 4.5.2 Rated operating conditions 21
22、4.6 Start-up conditions 23 4.7 Requirements for PMD functions (except PMD-A)23 4.7.1 Active power (P) and active energy (Ea) measurements 23 4.7.2 Reactive power (QA, QV) and reactive energy (ErA, ErV) measurements 28 4.7.3 Apparent power (SA, SV) and apparent energy (EapA, EapV) measurements.31 4.7
23、.4 Frequency (f) measurements .33 4.7.5 R.m.s. phase current (I) and neutral current (IN, INc) measurements34 4.7.6 R.m.s. voltage (U) measurements39 4.7.7 Power factor (PFA, PFV) measurements 39 4.7.8 Short term flicker (Pst) and long term flicker (Plt) measurements.39 4.7.9 Voltage dip (Udip) and
24、voltage swell (Uswl) measurements .40 4.7.10 Transients overvoltage (Utr) measurements 42 4.7.11 Voltage interruption (Uint) measurements42 4.7.12 Voltage unbalance (Unb, Unba) measurements .43 4.7.13 Voltage harmonics (Uh) and voltage THD (THDu and THD-Ru) measurements.44 BS EN 61557-12:2008 3 Copy
25、right British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:30:16 MDTNo reproduction or networking permitted without license from IHS -,-,- 4.7.14 Current harmonics (Ih) and current THD (THDi and THD-Ri) m
26、easurements.45 4.7.15 Minimum, maximum, peak, three-phases average and demand measurements.46 4.8 Requirements for PMD-A functions46 4.9 General mechanical requirements .47 4.9.1 Vibration requirements 47 4.9.2 IP requirements.47 4.10 Safety requirements 48 4.10.1 Clearances and creepage distances 4
27、8 4.10.2 Connection of a fixed installed PMD with a current transformer .48 4.10.3 Connection of a PMD with a high voltage sensor .48 4.10.4 Accessible parts 48 4.10.5 Hazardous live parts49 4.11 Analog outputs 49 4.11.1 General requirements49 4.11.2 Compliance voltage .49 4.11.3 Analog output rippl
28、e content 49 4.11.4 Analog output response time .49 4.11.5 Limiting value of the analog output signal49 4.11.6 Pulse outputs 50 5 Marking and operating instructions .50 5.1 Marking .50 5.2 Operating and installation instructions.50 5.2.1 General characteristics50 5.2.2 Essential characteristics51 5.
29、2.3 Safety characteristics 53 6 Tests53 6.1 Type tests of PMD.53 6.1.1 Test of temperature influence 54 6.1.2 Active power54 6.1.3 Apparent power .57 6.1.4 Power factor57 6.1.5 Common mode voltage rejection test.57 6.1.6 Frequency .58 6.1.7 Measurement of voltage harmonics .58 6.1.8 Measurement of c
30、urrent harmonics58 6.1.9 Dips and swells .59 6.1.10 Voltage interruptions .59 6.1.11 Outputs tests.59 6.1.12 Climatic tests.60 6.1.13 EMC tests61 6.1.14 Start up tests.61 6.2 Type tests of PMD-A .61 6.3 Routine tests.61 6.3.1 Protective bonding test61 6.3.2 Dielectric strength test.62 6.3.3 Uncertai
31、nty test .62 BS EN 61557-12:2008 4 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:30:16 MDTNo reproduction or networking permitted without license from IHS -,-,- Annex A (informative) Defi
32、nitions of electrical parameters .63 Annex B (normative) Definitions of minimum, maximum, peak and demand values 67 Annex C (informative) Intrinsic uncertainty, operating uncertainty, and overall system uncertainty69 Annex D (informative) Recommended sensor classes for the different kinds of PMD71 A
33、nnex E (normative) Requirements applicable to PMD and to PMD-A74 Bibliography75 Figure 1 PMD generic measurement chain.19 Figure 2 Description of different types of PMD .20 Figure 3 Relationship between ambient air temperature and relative humidity23 Figure 4 Waveform for odd harmonics influence tes
34、t on active power measurement 54 Figure 5 Spectral content for odd harmonics influence test on active power measurement.55 Figure 6 Waveform for sub-harmonics influence test on active power measurement 56 Figure 7 Spectral content for sub-harmonics influence test on active power measurement.56 Figur
35、e 8 Common mode voltage influence testing 57 Figure 9 Waveform for harmonics influence test on frequency measurement58 Figure A.1 Arithmetic and vector apparent powers in sinusoidal situation.65 Figure A.2 Geometric representation of active and reactive power .66 Figure B.1 Thermal current demand.67
36、 Figure C.1 Different kind of uncertainties .69 Table 1 Classification of PMD 20 Table 2 List of applicable function performance classes for PMD without external sensors 20 Table 3 List of applicable system performance classes for PMD with external sensors.21 Table 4 Reference conditions for testing
37、 21 Table 5 Rated operating temperatures for portable equipment .22 Table 6 Rated operating temperatures for fixed installed equipment 22 Table 7 Humidity and altitude operating conditions 22 Table 8 Intrinsic uncertainty table for active power and active energy measurement 24 Table 9 Influence quan
38、tities for active power and active energy measurement.25 Table 10 Starting current for active power and active energy measurement .28 Table 11 Intrinsic uncertainty table for reactive power and reactive energy measurement.28 Table 12 Influence quantities for reactive power and reactive energy measur
39、ement.29 Table 13 Starting current for reactive energy measurement .31 Table 14 Intrinsic uncertainty table for apparent power and apparent energy measurement 31 Table 15 Influence quantities for apparent power and apparent energy measurement32 Table 16 Intrinsic uncertainty table for frequency meas
40、urement .33 Annex ZA (normative) Normative references to international publications with their corresponding European publications77 Annex ZZ (informative) Coverage of Essential Requirements of EC Directives79 BS EN 61557-12:2008 5 Copyright British Standards Institution Provided by IHS under licens
41、e with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:30:16 MDTNo reproduction or networking permitted without license from IHS -,-,- Table 20 Intrinsic uncertainty table for phase current .35 Table 21 Intrinsic uncertainty table for neutral current measurement35
42、 Table 22 Intrinsic uncertainty table for neutral current calculation 35 Table 23 Influence quantities for phase current and neutral current measurement .36 Table 24 Rated range of operation for r.m.s. voltage measurement37 Table 25 Intrinsic uncertainty table for r.m.s. voltage measurement .37 Tabl
43、e 26 Influence quantities for r.m.s. voltage measurement38 Table 27 Intrinsic uncertainty table for power factor measurement .39 Table 28 Intrinsic uncertainty table for flicker measurement.39 Table 29 Rated range of operation for voltage dips and swells measurement.40 Table 30 Intrinsic uncertainty
44、 table for voltage dips and swells measurement 40 Table 31 Influence quantities for dips and swells measurement .41 Table 32 Intrinsic uncertainty table for transient overvoltage measurement42 Table 33 Intrinsic uncertainty table for voltage interruption measurement 43 Table 34 Intrinsic uncertainty
45、 table for voltage unbalance measurement 43 Table 35 Rated range of operation for voltage harmonics measurement 44 Table 36 Intrinsic uncertainty table for voltage harmonics measurement 44 Table 37 Intrinsic uncertainty table for voltage THDu or THD-Ru measurement .44 Table 38 Rated range of operati
46、on for current harmonics measurement.45 Table 39 Intrinsic uncertainty table for current harmonics measurement 45 Table 40 Intrinsic uncertainty table for current THDi and THD-Ri measurement .46 Table 41 Complementary characteristics of PMD-A47 Table 42 Minimum IP requirements for PMD 48 Table 43 PM
47、D specification form51 Table 44 Characteristics specification template52 Table 45 Characteristics specification template53 Table A.1 Symbols definition63 Table A.2 Calculation definitions of electrical parameters, for 3 phase unbalanced system with neutral.64 Table D.1 PMD SD associated to current s
48、ensor or PMD DS associated to voltage sensor 71 Table D.2 PMD SS with Current Sensor and Voltage Sensor association.72 Table D.3 Range of applicable performance classes for PMD without its associated external sensors .73 Table D.4 Range of applicable performance classes when calculating performance clas