The adapter is used to test the energy measurement accuracy of the EVSE by comparison of the energy measured by the built-in AC electricity meter with the energy measured by the Portable Working Standard PWS 2.3 genX with an eMOB I-32.3 AC test adapter at the output of the charging station.
For customers such as utilities, meter service providers or operators of EVSE, MTE developed the eMOB I-32.3 AC test adapter which enables three-phase precision AC current measurement up to 32 A and three phase AC voltage measurement at the outlet of an AC charging station. This set up allows the precise measurement of the energy charged to the accumulator of the EV considering also the voltage drop between the built-in electricity meter and the outlet of the charging station, where the power is available for the customer. In combination with the PWS 2.3 genX Portable Working Standard from MTE, the eMOB I-32.3 AC can be connected to any EVSE to retrieve all relevant performance data, thus realizing a test system of accuracy class 0.1 and making it possible to test the installed energy meter and determine the existing power loss.
