Applies only to newly manufactured indoor or outdoor static watt-hour meters of accuracy classes 1 and 2, for the measurement of alternating-current electrical active energy of a frequency in the range 45 Hz to 65 Hz and to their type tests only. Does not apply to watt-hour meters where the voltage across the connection terminals exceeds 600 V, portable meters, data interfaces to the register of the meter. Acceptance tests are partially given in IEC 60514.

IEC 61036:1996

Alternating current static watt-hour meters for active energy (Classes 1 and 2)