Voltage transformer as a new current, voltage measuring device with a small

Electronic current and voltage transformers as a new type of current, voltage measuring device with small size, light weight, no ferromagnetic saturation, ferromagnetic resonance frequency bandwidth, computer protection interface easily with other  electric transformer   has made rapid progress in recent years. The digital output electronic transformer standard protocol developed after further accelerate the pace of development of electronic transformer. This paper describes a  Electric transformer  electronic transformer basic principles and the basis of composition, introduced digital output interface electronic transformer important part - the definition and composition of merged cells analyzed merging unit features. According to their functional characteristics, the authors propose a FPGA and DSP architecture merging unit implementations.