DIN EN 50470-3 : 2007
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ELECTRICITY METERING EQUIPMENT (A.C.) - PART 3: PARTICULAR REQUIREMENTS - STATIC METERS FOR ACTIVE ENERGY (CLASS INDEXES A, B AND C)
Hardcopy
03-12-2020
German
05-01-2007
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Standard electrical values
5 Mechanical requirements
6 Climatic conditions
7 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 test
8 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 constant
9 Durability
10 Reliability
11 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 device
Annex A (informative) Calculation of the composite error
Annex B (normative) Test circuit diagram for the test of
immunity to earth fault
Annex C (normative) Test circuit diagram for d.c., even
harmonics, odd harmonics and sub-harmonics
Annex ZZ (informative) Coverage of Essential Requirements of
EC Directives
Bibliography
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