This British Standard specifies requirements for alternating-current single-phase static watt-hour telemeters of accuracy class 1 or class 2, with one or two measuring elements. It applies to telemeters of protective class Ⅰ or class Ⅱ.
NOTE Accuracy classes and protective classes are as applied in BS EN 61036:1997.
BS 7951:2000 history
2000BS 7951:2000 Electricity meters - Alternating-current single-phase static watt-hour telemeters of accuracy class 1 or 2