AN ENERGY METER THAT ALSO MEASURES POWER QUALITY. THE METER CAN MEASURE ACTIVE ENERGY (kWh), REACTIVE ENERGY (kVArh) AND APPARENT ENERGY (kVAh). OTHER FUNCTIONS INCLUDE THE ABILITY TO CALCULATE MAXIMUM DEMAND, STORE AND PROVIDE PERIODICAL INVOICING DATA, SELF DIAGNOSE, DISPLAY INSTANTANEOUS VALUES OF VARIOUS ELECTRICAL QUANTITIES AND COMMUNICATION.

CLASSIFICATION IS DETERMINED ACCORDING TO GIRS 1 AND 6. CN 90283019 FOR ELECTRICITY METERS: FOR ALTERNATING CURRENT: FOR MULTIPHASE. NOTE 3 TO CHAPTER 90.