This Standard is an adoption with national modifications and has been reproduced from IEC 62053-21:2013 + A1:2016 CSV (ED.1.1), Electricity metering equipment (a.c.) – Particular requirements – Part 21: Static meters for active energy (classes 1 and 2). This Standard communicates to users, and also provides manufacturers with the particular requirements for class 1 and 2 active energy static meters intended for use in Australia.