This European Standard 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. It specifies particular requirements and type test methods.
It applies to static watt-hour meters for indoor and outdoor application, consisting of a measuring element and register(s) enclosed together in a meter case. It also applies to operation indicator(s) and test output(s).
If the meter has (a) measuring element(s) for more than one type of energy (multi-energy meters), or when other functional elements, like maximum demand indicators, electronic tariff registers, time switches, ripple control receivers, data communication interfaces etc. are enclosed in the meter case (multi-function meters) then this standard applies only for the active energy metering part.
This standard distinguishes between:
meters of class indexes A, B and C;
direct connected and transformer operated meters;
meters for use in networks equipped with or without earth fault neutralizers.
It does not apply to:
watt-hour meters where the voltage across the connection terminals exceeds 600 V (line-toline voltage for meters for polyphase systems);
portable meters;
reference meters.
Methods for acceptance testing are covered by the IEC 62058 series of standards 1).
The dependability aspect is covered by the documents of the IEC 62059 series.
BS EN 50470-3:2006 Referenced Document
EN 50470-1:2006 Electricity metering equipment (a.c.) Part 1: General requirements, tests and test conditions - Metering equipment (class indexes A, B and C)*， 2024-04-18 Update
EN 62059-41:2006 Electricity metering equipment - Dependability Part 41: Reliability prediction
BS EN 50470-3:2006 history
1970BS EN 50470-3:2022 Electricity metering equipment Particular requirements. Static meters for AC active energy (class indexes A, B and C) (British Standard)
2019BS EN 50470-3:2006+A1:2018 Electricity metering equipment (a.c.)-Particular requirements. Static meters for active energy (class indexes A, B and C)
2006BS EN 50470-3:2006 Electricity metering equipment (a.c.) - Particular requirements - Static meters for active energy (class indexes A, B and C)