FIELD: electrical engineering, measurement technology. SUBSTANCE: proposed gear measuring electric energy has current and voltage pickups, multiplexing circuit and analog-to- digital converter. Microprocessor controls operation mode of multiplexing circuit so that it ensures feed of current and voltage signals to converter in turn. Same microprocessor momentarily computes electric energy using two values of voltage that characterizes sample of current and three samples of current. Thanks to use of mentioned means one can correct optimally time delay between samples of voltage and current. EFFECT: enhanced accuracy of gear and method. 8 cl, 3 dwg
Authors
Dates
2000-01-10—Published
1995-05-31—Filed