EN 62055-31:2005

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Standard electrical values
5 Mechanical requirements
6 Climatic requirements
7 Electrical requirements
8 Metering accuracy requirements
9 Functional requirements
10 Type test
Annex A (informative) - Functional performance
Annex B (informative) - Reference model for a
                         payment meter
Annex C (normative) - Performance requirements for
                       payment meters with load
                       switching utilisation categories
                       UC2, UC3 and UC4
Annex D (normative) - Requirements of timekeeping
Annex ZA (normative) - Normative references to international
                       publications with their corresponding
                       European publications

applies to newly manufactured, static watt-hour payment meters of accuracy classes 1 and 2 for direct connection, for the measurement of alternating current electrical energy consumption of a frequency in the range 45 Hz to 65 Hz that include a load switch for the purpose of interruption or restoration of the electricity supply to the load in accordance with the current value of the available credit maintained in the payment meter. It does not apply to static watt-hour payment meters where the voltage across the connection terminals exceeds 600 V (line-to-line voltage for meters for polyphase systems).