Common use of Accuracy requirements Clause in Contracts

Accuracy requirements. 4.2.1 Overall accuracy: The overall accuracy of the energy measurements at or referred to at the Defined Metering Point shall at all times be within the limits of error as shown:- 4.2.1.1 Active Energy CONDITION LIMIT OF ERRORS AT STATED SYSTEM POWER FACTOR Current expressed as a percentage of Rated Measuring Current Power Factor Limits of Error 120% to 10% inclusive Below 10% to 5% Below 5% to 1% * 120% to 10% inclusive 1 1 1 0.5 lag and 0.8 lead ± 0.5% ± 0.7% ± 1.5% ± 1.0% Superseded * This requirement shall only apply where the energy transfers to be measured by the Import Meter and/or the Export Meter during normal operating conditions is such that measured current will be below 5% of the Rated Measurement Current (excluding zero) for periods equivalent to 10% or greater per annum.