1992IEC 60687:1992 Alternating current static watt-hour meters for active energy (classes 0,2S and 0,5S)
IEC 60687:1992 Alternating current static watt-hour meters for active energy (classes 0,2S and 0,5S) was changed to IEC 62053-22:2003 Electricity metering equipment (a.c.) - Particular requirements - Part 22: Static meters for active energy (classes 0,2 S and 0,5 S).