Patent ID: 9020771
Filing Date: 2015-04-28
Classification: B60L,G01R,G06Q,Y02E,Y02T,Y04S

Abstract:
1. An instrument for accurately verifying the active energy delivered by an electric vehicle charging station (EVCS), comprising: a primary port for receiving a charging cable normally connecting the EVCS to an electric vehicle; one or more measuring devices which simultaneously make sampling measurements of voltage and current from one or more supply lines delivering power from the EVCS to a load after the charging cable has been received at the primary port; digital processing means configured to calculate a first value of active energy delivered by the EVCS to the load from the sampling measurements obtained from the one or more measuring devices; and at least one output device for displaying or transmitting the first value of active energy delivered or one or more values determined from the first value of active energy delivered for comparison with a metered value of active energy delivered as given by the EVCS.