• SN EN 50470-1 : 2006

    Current The latest, up-to-date edition.

    ELECTRICITY METERING EQUIPMENT (A.C.) - PART 1: GENERAL REQUIREMENTS, TESTS AND TEST CONDITIONS - METERING EQUIPMENT (CLASS INDEXES A, B, AND C)

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    Published date:  13-01-2013

    Publisher:  Swiss Standards

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    Applies to newly manufactured watt-hour meters, measuring active electrical energy, intended for residential, commercial and light industrial use, for use on 50 Hz electrical networks.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher Swiss Standards
    Status Current
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