EN 50470-3:2006
(Main)Electricity metering equipment (a.c.) - Part 3: Particular requirements - Static meters for active energy (class indexes A, B and C)
Electricity metering equipment (a.c.) - Part 3: Particular requirements - Static meters for active energy (class indexes A, B and C)
This European Standard applies to newly manufactured static watt-hour meters intended for residential, commercial and light industrial use, of class indexes A, B and C, for the measurement of alternating current electrical active energy in 50 Hz networks. It specifies particular requirements and type test methods. It applies to static watt-hour meters for indoor and outdoor application, consisting of a measuring element and register(s) enclosed together in a meter case. It also applies to operation indicator(s) and test output(s). If the meter has (a) measuring element(s) for more than one type of energy (multi-energy meters), or when other functional elements, like maximum demand indicators, electronic tariff registers, time switches, ripple control receivers, data communication interfaces etc. are enclosed in the meter case (multi-function meters) then this standard applies only for the active energy metering part. This standard distinguishes between: – meters of class indexes A, B and C; – direct connected and transformer operated meters; – meters for use in networks equipped with or without earth fault neutralizers. It does not apply to: – watt-hour meters where the voltage across the connection terminals exceeds 600 V (line-to-line voltage for meters for polyphase systems); – portable meters; – reference meters. Methods for acceptance testing are covered by the IEC 62058 series of standards. The dependability aspect is covered by the documents of the IEC 62059 series.
Wechselstrom-Elektrizitätszähler - Teil 3: Besondere Anforderungen - Elektronische Wirkverbrauchszähler der Genauigkeitsklassen A, B und C
Equipement de comptage d'électricité (c.a.) - Partie 3: Prescriptions particulières - Compteurs statiques d'énergie active (classes de précision A, B et C)
La présente Norme Européenne s'applique aux compteurs statiques d'énergie active neufs, destinés à l'usage des habitations, des commerces et des petites industries, d'indices de classe A, B et C, et utilisés pour le mesurage de l'énergie électrique active en courant alternatif sur des réseaux à 50 Hz. Elle spécifie les exigences particulières et les méthodes d'essais de type. Elle n'est applicable qu'aux compteurs d'énergie active statiques de types intérieur et extérieur, constitués d'un élément de mesure et d'un (des) élément(s) indicateur(s) rassemblés dans un même boîtier. Elle s'applique également à (aux) l'indicateur(s) de fonctionnement et au(x) dispositif(s) de sortie d'essai. Si le compteur a un (des) élément(s) de mesure pour plusieurs types d’énergie (compteurs d'énergies multiples), ou si d’autres éléments fonctionnels comme indicateurs de maximum, éléments indicateurs tarifaires électroniques, horloges de commutation, récepteurs de télécommande centralisée, interfaces de communication de données, etc. sont incorporés dans le boîtier du compteur (compteurs à fonctions multiples), la présente norme ne s'applique alors qu'à la partie de comptage de l'énergie active. La présente norme distingue entre : – les compteurs d'indices de classe A, B et C ; – les compteurs à branchement direct et ceux alimentés par transformateur ; – les compteurs utilisés dans des réseaux équipés ou non de neutraliseurs de défaut de terre. Elle n'est pas applicable aux : – compteurs d'énergie active dont la tension entre les bornes de raccordement excède 600 V (tension entre phases pour les compteurs des systèmes polyphasés) ; – compteurs portatifs ; – compteurs de référence. Les méthodes d'essais d'acceptation sont traitées par la série des normes CEI 62058. Les aspects de sûreté de fonctionnement sont traités par les documents de la série CEI 62059.
Oprema za merjenje električne energije (a.c.) - 3. del: Posebne zahteve - Statični števci za delovno energijo (razredni indeksi A, B in C)
Ta evropski standard se nanaša na novo proizvedene statične merilnike Wh namenjene za domačo, komercialno in industrijsko uporabo, razrednih indeksov A, B in C, za merjenje izmeničnega toka delovne energije v 50 Hz omrežju. Poudarja posebne zahteve in vrste preskusnih postopkov. Nanaša se na statične Wh merilnike za notranjo in zunanjo montažo, sestavljene iz merilnega elementa in registra priloženega v merilnem ohišju. Nanaša se tudi na delovanje indikatorjev in testnih izhodov. Če ima merilnik več merilnih elementov za več kot en tip energije (multi energijski merilnik) ali ko so ostali funkcionalni elementi, kot indikatorji maksimuma, elektronski tarifni registri, časovna stikala, kontrolni prejemniki nihanj, podatkovni komunikacijski interface, itn. priloženi v merilno ohišje (multi funkcionalni merilniki) potem se ta standard nanaša samo na aktivni energijsko merilni del.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wechselstrom-Elektrizitätszähler -- Teil 3: Besondere Anforderungen - Elektronische Wirkverbrauchszähler der Genauigkeitsklassen A, B und CEquipement de comptage d'électricité (c.a.) -- Partie 3: Prescriptions particulières - Compteurs statiques d'énergie active (classes de précision A, B et C)Electricity metering equipment (a.c.) -- Part 3: Particular requirements - Static meters for active energy (class indexes A, B and C)91.140.50Sistemi za oskrbo z elektrikoElectricity supply systems17.220.20Measurement of electrical and magnetic quantitiesICS:Ta slovenski standard je istoveten z:EN 50470-3:2006SIST EN 50470-3:2007en01-marec-2007SIST EN 50470-3:2007SLOVENSKI
STANDARD
EUROPEAN STANDARD EN 50470-3 NORME EUROPÉENNE
EUROPÄISCHE NORM October 2006
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50470-3:2006 E
ICS 91.140.50
English version
Electricity metering equipment (a.c.)
Part 3: Particular requirements -
Static meters for active energy
(class indexes A, B and C)
Equipement de comptage
d'électricité (c.a.)
Partie 3: Prescriptions particulières -
Compteurs statiques d'énergie active (classes de précision A, B et C)
Wechselstrom-Elektrizitätszähler
Teil 3: Besondere Anforderungen -
Elektronische Wirkverbrauchszähler
der Genauigkeitsklassen A, B und C
This European Standard was approved by CENELEC on 2006-05-01. 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 may 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 to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, 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.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50470-3 on 2006-05-01. 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)
2007-05-01 – latest date by which the national standards conflicting with the EN have to be withdrawn
(dow)
2009-05-01 This EN 50470-3 is related to:
– EN 62053-21:2003, Electricity metering equipment (a.c.) – Particular requirements – Part 21: Static meters for active energy (classes 1 and 2) and
– EN 62053-22:2003, Electricity metering equipment (a.c.) – Particular requirements – Part 22: Static meters for active energy (classes 0,2 S and 0,5 S).
The structure of the standards is similar, modifications in this Euroepan Standard are provided in the perspective of compliance with the Essential Requirements of the Directive 2004/22/EC on Measuring Instruments (MID).
This standard is to be used with EN 50470-1:2006, Electricity metering equipment (a.c.) – Part 1: General requirements, tests and test conditions – Metering equipment (class indexes A, B and C). 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 2004/22/EC. See Annex ZZ. __________ SIST EN 50470-3:2007
– 3 – EN 50470-3:2006 Contents 1 Scope.5 2 Normative references.5 3 Terms, definitions and abbreviations.5 4 Standard electrical values.6 5 Mechanical requirements.6 6 Climatic conditions.6 7 Electrical requirements.6 7.1 Power consumption.6 7.1.1 Measurement method.6 7.1.2 Voltage circuits.6 7.1.3 Current circuits.6 7.2 AC voltage test.7 8 Accuracy requirements and tests.7 8.1 Limits of percentage error due to variation of the load.7 8.2 Repeatability.8 8.3 Limits of additional percentage error due to influence quantities.8 8.4 Maximum permissible error (MPE).10 8.5 Effect of disturbances of long duration.10 8.6 Short time overcurrents.12 8.7 Performing the tests.12 8.7.1 Accuracy test conditions.12 8.7.2 Accuracy tests at reference conditions.13 8.7.3 Interpretation of accuracy test results.14 8.7.4 Repeatability.14 8.7.5 Test of effects of influence quantities.14 8.7.6 Calculation of the composite error.15 8.7.7 Test of effects of disturbances of long duration.15 8.7.8 Short time overcurrents.18 8.7.9 Test of starting and no-load condition.19 8.7.10 Meter constant.20 9 Durability.20 10 Reliability.20 11 Requirements concerning the software and protection against corruption.21 11.1 General.21 11.2 Identification of functions implemented in software.21 11.3 Identification and protection of software.21 11.4 Identification and protection of metrologically relevant parameters.21 11.5 Setting of parameters.22 11.6 Protection of measurement data.22 11.7 Protection against inadmissible influence by metrologically non-relevant software.22 11.8 Protection against inadmissible influence by connecting another device.22 Annex A (informative)
Calculation of the composite error.23 Annex B (normative)
Test circuit diagram for the test of immunity to earth fault.24 SIST EN 50470-3:2007
Test circuit diagram for d.c., even harmonics, odd harmonics and sub-harmonics.25 Annex ZZ (informative)
Coverage of Essential Requirements of EC Directives.30 Bibliography.31
Figures Figure B.1 – Circuit to simulate earth fault condition in phase 1.24 Figure B.2 – Voltages at the meter under test.24 Figure C.1 – Test circuit diagram for half-wave rectification.25 Figure C.2 – Half-wave rectified waveform.26 Figure C.3 – Informative distribution of half-wave harmonic content (the Fourier analysis is not complete).26 Figure C.4 – Test circuit diagram (informative).27 Figure C.5 – Phase fired waveform.28 Figure C.6 – Informative distribution of harmonic content of phase fired waveform (the Fourier analysis is not complete).28 Figure C.7 – Burst fired waveform.29 Figure C.8 – Informative distribution of harmonic content of burst fired waveform (the Fourier analysis is not complete).29
Tables Table 1 – Power consumption in voltage circuits.6 Table 2 – Power consumption in current circuits.7 Table 3 – AC voltage tests.7 Table 4 – Percentage error limits at reference conditions (single-phase meters and polyphase meters with balanced loads).8 Table 5 – Percentage error limits at reference conditions (polyphase meters carrying a single-phase load, but with balanced polyphase voltages applied to voltage circuits).8 Table 6 – Limits of additional percentage error due to influence quantities
(single-phase meters and polyphase meters with balanced loads).9 Table 7 – Limits of additional percentage error due to influence quantities (polyphase meters carrying a single phase load,
but with balanced polyphase voltages applied to voltage circuits).9 Table 8 – Maximum permissible error (MPE).10 Table 9 – Effect of disturbances of long duration – Critical change values.11 Table 10 – Effect of short time overcurrents – Critical change value.12 Table 11 – Voltage and current balance.12 Table 12 – Reference conditions.13 Table 13 – Test points determining the intrinsic error and the additional percentage error due to influence quantities.14 Table 14 – Interpretation of test results.14 Table 15 – Starting current.19
– 5 – EN 50470-3:2006 1 Scope This European Standard applies to newly manufactured static watt-hour meters intended for residential, commercial and light industrial use, of class indexes A, B and C, for the measurement of alternating current electrical active energy in 50 Hz networks. It specifies particular requirements and type test methods. It applies to static watt-hour meters for indoor and outdoor application, consisting of a measuring element and register(s) enclosed together in a meter case. It also applies to operation indicator(s) and test output(s). If the meter has (a) measuring element(s) for more than one type of energy (multi-energy meters), or when other functional elements, like maximum demand indicators, electronic tariff registers, time switches, ripple control receivers, data communication interfaces etc. are enclosed in the meter case (multi-function meters) then this standard applies only for the active energy metering part. This standard distinguishes between: – meters of class indexes A, B and C; – direct connected and transformer operated meters; – meters for use in networks equipped with or without earth fault neutralizers. It does not apply to: –
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