Method And Prototype for in Field Energy Meters Verification

This paper presents the development of an equipment for functional verification and benchmark of electronic and electromechanical energy meters in the field. The tester has an accuracy similar to a laboratory measurement table, but without the need to interrupt the consumer's power supply. This equipment was designed using the test current control concept, which dynamically evaluate the consumer's current, adjusting the control current to perform the test. At the moment of the gauging execution, the equipment adjusts the currents in order to maintain the standards for the test. The tester was used in several consumer units of Neoenergia Group, it is currently in final development phase.