YD2000 series intelligentized power meter and intelligentized measure & control power instrument (shorted as YD2000 series) is a kind of integrated intelligentized 3-phase measuring meter for power parameters, which have the functions such as programmable function, automated measuring, LCD (YD2000, YD2100, YD2020)/LED (YD2030, YD3000) displaying, power accumulating, real time clock (YD2000&YD2100), intelligence analyzing, max or min remembering (YD2000, YD2100), digital communication and so on. They integrate digitalization, intelligentization and network. So they can realize measure and analysis automatically and reduces man-made mistakes when they replace power transducers, electricity meters, digit displaying meters, digit collecting meters, and recording &analyzing meters fully. There are perfect products made up of electric automatic system.