DIN EN 62053-21:2017-09

This part of IEC 62053 applies only to newly manufactured static watt-hour meters of accuracy classes 1 and 2, for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only. It applies only 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 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, etcetera are enclosed in the meter case, then the relevant standards for these elements also apply. The responsible committee is DKE/K 461 "Messeinrichtungen und -systeme für Elektrizität" ("Metering equipment and systems for electricity") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.