Arrangements for measuring electric power or power factor

GPHYSICS G01Measuring instruments G01RMEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES

G01R21/00Arrangements for measuring electric power or power factor

G01R21/001Measuring real or reactive component; Measuring apparent energy G01R21/002Measuring real component G01R21/003Measuring reactive component G01R21/005Measuring apparent power G01R21/006Measuring power factor G01R21/007Adapted for special tariff measuring G01R21/008Measuring maximum demand G01R21/01in circuits having distributed constants G01R21/02by thermal methods G01R21/04in circuits having distributed constants G01R21/06by measuring current and voltage G01R21/07in circuits having distributed constants G01R21/08by using galvanomagnetic effect devices G01R21/09in circuits having distributed constants G01R21/10by using square-law characteristics of circuit elements G01R21/12in circuits having distributed constants G01R21/127by using pulse modulation G01R21/1271Measuring real or reactive component, measuring apparent energy G01R21/1273Measuring real component G01R21/1275Measuring reactive component G01R21/1276Measuring apparent energy G01R21/1278Adapted for special tariff measuring G01R21/133by using digital technique G01R21/1331Measuring real or reactive component, measuring apparent energy G01R21/1333adapted for special tariff measuring G01R21/1335Tariff switching circuits G01R21/1336Measuring overconsumption G01R21/1338Measuring maximum demand G01R21/14Compensating for temperature change