3 PHASE MULTI- FUNCTIONAL INTELLIGENT POWER METER INSTALLATION KIT (100 A) The three-phase multi-function meter is designed for the electric power intelligent monitoring and electric energy metering needs of electric power system, industrial and mining enterprises, public facilities, intelligent buildings and so on, The three-phase multi-function meter is designed for the electric power intelligent monitoring and electric energy metering needs of electric power system, industrial and mining enterprises, public facilities, intelligent buildings and so on,