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ELECTRICITY METERING EQUIPMENT (A.C.) - PART 3: PARTICULAR REQUIREMENTS - STATIC METERS FOR ACTIVE ENERGY (CLASS INDEXES A, B AND C)
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Available format(s): Hardcopy
Superseded date: 12-03-2020
Language(s): German
Published date: 01-05-2007
Publisher: Verband Deutscher Elektrotechniker
1 Scope2 Normative references3 Terms, definitions and abbreviations4 Standard electrical values5 Mechanical requirements6 Climatic conditions7 Electrical requirements 7.1 Power consumption 7.1.1 Measurement method 7.1.2 Voltage circuits 7.1.3 Current circuits 7.2 AC voltage test8 Accuracy requirements and tests 8.1 Limits of percentage error due to variation of the load 8.2 Repeatability 8.3 Limits of additional percentage error due to influence quantities 8.4 Maximum permissible error (MPE) 8.5 Effect of disturbances of long duration 8.6 Short time overcurrents 8.7 Performing the tests 8.7.1 Accuracy test conditions 8.7.2 Accuracy tests at reference conditions 8.7.3 Interpretation of accuracy test results 8.7.4 Repeatability 8.7.5 Test of effects of influence quantities 8.7.6 Calculation of the composite error 8.7.7 Test of effects of disturbances of long duration 8.7.8 Short time overcurrents 8.7.9 Test of starting and no-load condition 8.7.10 Meter constant9 Durability10 Reliability11 Requirements concerning the software and protection against corruption 11.1 General 11.2 Identification of functions implemented in software 11.3 Identification and protection of software 11.4 Identification and protection of metrologically relevant parameters 11.5 Setting of parameters 11.6 Protection of measurement data 11.7 Protection against inadmissible influence by metrologically non-relevant software 11.8 Protection against inadmissible influence by connecting another deviceAnnex A (informative) Calculation of the composite errorAnnex B (normative) Test circuit diagram for the test of immunity to earth faultAnnex C (normative) Test circuit diagram for d.c., even harmonics, odd harmonics and sub-harmonicsAnnex ZZ (informative) Coverage of Essential Requirements of EC DirectivesBibliography
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.
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