In B class uncertainty appraisement of electric energy meter verification device,the main factor affecting uncertainty appraisement result is all sorts of error source,using electric energy meter verification device integration as error source substitute each independent error source in measure ment part to analyze the influence of uncertainty appraisement of electric energy meter verification de vice,and through the example explains the method using the demarcating error of alternating current meter verification device to substitute the cumulate error of each measurement part in alternating cur rent meter verification device is feasible.The application result shows that this method can reduce cau lationstepandsimplyanalysismethod.
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