I.S. EN 50470-1:2006
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 1: GENERAL REQUIREMENTS, TESTS AND TEST CONDITIONS - METERING EQUIPMENT (CLASS INDEXES A, B AND C)
Hardcopy , PDF
08-05-2019
11-24-2006
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1 Scope
2 Normative references
3 Terms and definitions
3.1 General definitions
3.2 Definitions related to the functional elements
3.3 Definitions of mechanical elements
3.4 Definitions related to insulation
3.5 Definitions of meter quantities
3.6 Definitions of influence quantities
3.7 Definitions of tests
3.8 Definitions related to electromechanical meters
3.9 Abbreviations
4 Standard electrical values
4.1 Standard reference voltages
4.2 Standard currents and current ranges
4.3 Standard reference frequency
5 Mechanical requirements and tests
5.1 General mechanical requirements
5.2 Case
5.2.1 Requirements
5.2.2 Mechanical strength tests of meter case
5.3 Window
5.4 Terminals - Terminal block(s) - Protective earth terminal
5.5 Terminal cover(s)
5.6 Clearance and creepage distances
5.7 Insulating encased meter of protective class II
5.8 Resistance to heat and fire
5.9 Protection against penetration of dust and water
5.10 Display of measured values
5.11 Output device and operation indicator
5.11.1 General
5.11.2 Mechanical and electrical characteristics
5.11.3 Optical characteristics
5.12 Marking of meter
5.12.1 Name-plates
5.12.2 Connection diagrams and terminal marking
5.13 Accompanying information
6 Climatic conditions
6.1 Temperature ranges
6.2 Relative humidity
6.3 Tests of the effect of the climatic environments
6.3.1 General
6.3.2 Dry heat test (Test B)
6.3.3 Cold test (Test A)
6.3.4 Damp heat cyclic test (Test Db)
6.3.5 Protection against solar radiation (Test Sa)
7 Electrical requirements
7.1 Voltage range
7.2 Heating
7.3 Insulation
7.3.1 Requirements
7.3.2 General test conditions
7.3.3 Impulse voltage test
7.3.4 AC voltage test
7.4 Electromagnetic compatibility (EMC)
7.4.1 Electromagnetic environment
7.4.2 General requirements and test conditions
7.4.3 Critical change value
7.4.4 Immunity to voltage dips and short interruptions
7.4.5 Immunity to electrostatic discharges
7.4.6 Immunity to radiated RF electromagnetic fields
7.4.7 Immunity to electrical fast transients/bursts
7.4.8 Immunity to conducted disturbances, induced by
RF fields
7.4.9 Immunity to surges
7.4.10 Immunity to damped oscillatory waves
7.4.11 Immunity to continuous magnetic fields of external
origin
7.4.12 Immunity to power frequency magnetic fields of
external origin
7.4.13 Radio interference suppression
8 Type test
8.1 Test conditions
Annex A (normative) Relationship between ambient air
temperature and relative humidity
Annex B (normative) Optical test output
Annex C (normative) Voltage waveform for the tests of the
effect of voltage dips and short interruptions
Annex D (informative) Test set-up for electromagnetic
compatibility (EMC) tests
Annex E (normative) Electromagnet for testing the influence of
continuous magnetic fields of external origin
Annex F (informative) Test schedule - Recommended test sequences
Annex ZZ (informative) Coverage of Essential Requirements
of EC Directives
Index
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