Abstract:
This paper gives an account on a three level hierarchical system for the calibration of power and energy meters. Major part of the complex system was developed by the Power and Energy Laboratory of INMETRO. First level is represented by a Reference System, capable of the highest accuracy measurement of power and energy in a wide range of voltage and current. The second level, a general purpose calibration system, serves for the mass calibration of standard instruments. The third level facilitates the calibration of consumers’ watt-hour meters as well as the type tests thereof. All the three systems are fully automated, traceable to national standards.
