1、 IEC 61557-12Edition 1.0 2007-08INTERNATIONAL STANDARD NORME INTERNATIONALEElectrical 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) Scuri
2、t lectrique dans les rseaux de distribution basse tension de 1 000 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) IEC61557-12:2007 THIS PUBLICATION IS COPYRIGHT PROTECTED
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17、Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61557-12Edition 1.0 2007-08INTERNATIONAL STANDARD NORME INTERNATIONALEElectrical 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 m
18、easuring and monitoring devices (PMD) Scurit lectrique dans les rseaux de distribution basse tension de 1 000 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) INTERNATIONAL
19、ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XCICS 17.220.20; 29.080.01; 29.240.01 PRICE CODECODE PRIXISBN 2-8318-9243.0 2 61557-12 IEC:2007 CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 2 Normative references .10 3 Terms and definitions .11 3.1 General definitions 11 3.2 De
20、finitions related to uncertainty and performance 12 3.3 Definitions related to electric phenomena 15 3.4 Definitions related to measurement techniques .18 3.5 Notations.18 3.5.1 Functions 18 3.5.2 Symbols and abbreviations19 3.5.3 Indices 19 4 Requirements .19 4.1 General requirements19 4.2 PMD gene
21、ral architecture20 4.3 Classification of PMD 20 4.4 List of applicable performance classes 21 4.4.1 List of applicable function performance classes for PMD without external sensors 21 4.4.2 List of applicable system performance classes for PMD with external sensors 22 4.5 Operating and reference con
22、ditions for PMD .22 4.5.1 Reference conditions.22 4.5.2 Rated operating conditions 22 4.6 Start-up conditions 24 4.7 Requirements for PMD functions (except PMD-A)24 4.7.1 Active power (P) and active energy (Ea) measurements 24 4.7.2 Reactive power (QA, QV) and reactive energy (ErA, ErV) measurements
23、 29 4.7.3 Apparent power (SA, SV) and apparent energy (EapA, EapV) measurements.32 4.7.4 Frequency (f) measurements .34 4.7.5 R.m.s. phase current (I) and neutral current (IN, INc) measurements35 4.7.6 R.m.s. voltage (U) measurements38 4.7.7 Power factor (PFA, PFV) measurements 40 4.7.8 Short term f
24、licker (Pst)and long term flicker (Plt) measurements.40 4.7.9 Voltage dip (Udip) and voltage swell (Uswl) measurements .41 4.7.10 Transients overvoltage (Utr) measurements 43 4.7.11 Voltage interruption (Uint) measurements43 4.7.12 Voltage unbalance (Unb, Unba) measurements .44 4.7.13 Voltage harmon
25、ics (Uh) and voltage THD (THDuand THD-Ru) measurements.45 61557-12 IEC:2007 3 4.7.14 Current harmonics (Ih) and current THD (THDiand THD-Ri) measurements.46 4.7.15 Minimum, maximum, peak, three-phases average and demand measurements.47 4.8 Requirements for PMD-A functions47 4.9 General mechanical re
26、quirements .48 4.9.1 Vibration requirements 48 4.9.2 IP requirements .48 4.10 Safety requirements 49 4.10.1 Clearances and creepage distances 49 4.10.2 Connection of a fixed installed PMD with a current transformer .49 4.10.3 Connection of a PMD with a high voltage sensor .49 4.10.4 Accessible parts
27、 49 4.10.5 Hazardous live parts50 4.11 Analog outputs 50 4.11.1 General requirements 50 4.11.2 Compliance voltage .50 4.11.3 Analog output ripple content 50 4.11.4 Analog output response time .50 4.11.5 Limiting value of the analog output signal 50 4.11.6 Pulse outputs 51 5 Marking and operating ins
28、tructions .51 5.1 Marking .51 5.2 Operating and installation instructions.51 5.2.1 General characteristics51 5.2.2 Essential characteristics 52 5.2.3 Safety characteristics 54 6 Tests 54 6.1 Type tests of PMD.54 6.1.1 Test of temperature influence 55 6.1.2 Active power55 6.1.3 Apparent power .58 6.1
29、.4 Power factor 58 6.1.5 Common mode voltage rejection test .58 6.1.6 Frequency .59 6.1.7 Measurement of voltage harmonics .59 6.1.8 Measurement of current harmonics59 6.1.9 Dips and swells .60 6.1.10 Voltage interruptions .60 6.1.11 Outputs tests .60 6.1.12 Climatic tests.61 6.1.13 EMC tests62 6.1.
30、14 Start up tests.62 6.2 Type tests of PMD-A .62 6.3 Routine tests .62 6.3.1 Protective bonding test 62 6.3.2 Dielectric strength test.63 6.3.3 Uncertainty test .63 4 61557-12 IEC:2007 Annex A (informative) Definitions of electrical parameters .64 Annex B (normative) Definitions of minimum, maximum,
31、 peak and demand values 68 Annex C (informative) Intrinsic uncertainty, operating uncertainty, and overall system uncertainty70 Annex D (informative) Recommended sensor classes for the different kinds of PMD72 Annex E (normative) Requirements applicable to PMD and to PMD-A75 Bibliography76 Figure 1
32、PMD generic measurement chain.20 Figure 2 Description of different types of PMD .21 Figure 3 Relationship between ambient air temperature and relative humidity24 Figure 4 Waveform for odd harmonics influence test on active power measurement 55 Figure 5 Spectral content for odd harmonics influence te
33、st on active power measurement.56 Figure 6 Waveform for sub-harmonics influence test on active power measurement 57 Figure 7 Spectral content for sub-harmonics influence test on active power measurement.57 Figure 8 Common mode voltage influence testing 58 Figure 9 Waveform for harmonics influence te
34、st on frequency measurement59 Figure A.1 Arithmetic and vector apparent powers in sinusoidal situation.66 Figure A.2 Geometric representation of active and reactive power .67 Figure B.1 Thermal current demand.68 Figure C.1 Different kind of uncertainties .70 Table 1 Classification of PMD 21 Table 2
35、List of applicable function performance classes for PMD without external sensors 21 Table 3 List of applicable system performance classes for PMD with external sensors.22 Table 4 Reference conditions for testing 22 Table 5 Rated operating temperatures for portable equipment .23 Table 6 Rated operati
36、ng temperatures for fixed installed equipment 23 Table 7 Humidity and altitude operating conditions 23 Table 8 Intrinsic uncertainty table for active power and active energy measurement 25 Table 9 Influence quantities for active power and active energy measurement.26 Table 10 Starting current for ac
37、tive power and active energy measurement .29 Table 11 Intrinsic uncertainty table for reactive power and reactive energy measurement .29 Table 12 Influence quantities for reactive power and reactive energy measurement.30 Table 13 Starting current for reactive energy measurement .32 Table 14 Intrinsi
38、c uncertainty table for apparent power and apparent energy measurement 32 Table 15 Influence quantities for apparent power and apparent energy measurement33 Table 16 Intrinsic uncertainty table for frequency measurement .34 Table 17 Influence quantities for frequency measurement34 Table 18 Rated ran
39、ge of operation for phase current measurement .35 Table 19 Rated range of operation for neutral current measurement 35 61557-12 IEC:2007 5 Table 20 Intrinsic uncertainty table for phase current .36 Table 21 Intrinsic uncertainty table for neutral current measurement36 Table 22 Intrinsic uncertainty
40、table for neutral current calculation 36 Table 23 Influence quantities for phase current and neutral current measurement .37 Table 24 Rated range of operation for r.m.s. voltage measurement38 Table 25 Intrinsic uncertainty table for r.m.s. voltage measurement .38 Table 26 Influence quantities for r.
41、m.s. voltage measurement 39 Table 27 Intrinsic uncertainty table for power factor measurement .40 Table 28 Intrinsic uncertainty table for flicker measurement .40 Table 29 Rated range of operation for voltage dips and swells measurement.41 Table 30 Intrinsic uncertainty table for voltage dips and sw
42、ells measurement 41 Table 31 Influence quantities for dips and swells measurement .42 Table 32 Intrinsic uncertainty table for transient overvoltage measurement43 Table 33 Intrinsic uncertainty table for voltage interruption measurement 44 Table 34 Intrinsic uncertainty table for voltage unbalance m
43、easurement 44 Table 35 Rated range of operation for voltage harmonics measurement 45 Table 36 Intrinsic uncertainty table for voltage harmonics measurement 45 Table 37 Intrinsic uncertainty table for voltage THDuor THD-Rumeasurement .45 Table 38 Rated range of operation for current harmonics measure
44、ment.46 Table 39 Intrinsic uncertainty table for current harmonics measurement 46 Table 40 Intrinsic uncertainty table for current THDiand THD-Rimeasurement .47 Table 41 Complementary characteristics of PMD-A48 Table 42 Minimum IP requirements for PMD 49 Table 43 PMD specification form52 Table 44 Ch
45、aracteristics specification template53 Table 45 Characteristics specification template54 Table A.1 Symbols definition64 Table A.2 Calculation definitions of electrical parameters, for 3 phase unbalanced system with neutral.65 Table D.1 PMD SD associated to current sensor or PMD DS associated to volt
46、age sensor 72 Table D.2 PMD SS with Current Sensor and Voltage Sensor association .73 Table D.3 Range of applicable performance classes for PMD without its associated external sensors .74 Table D.4 Range of applicable performance classes when calculating performance class of PMD with its associated
47、external sensors .74 Table D.5 List of functions affected by uncertainty of external sensors.74 Table E.1 Requirements applicable to PMD and to PMD-A.75 6 61557-12 IEC:2007 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 000 V a.c. AND 1 500
48、V d.c. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES Part 12: Performance measuring and monitoring devices (PMD) FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees
49、 (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications, Technical Reports, Pu
