GF312V2S portable three phase reference meter field is the newest product produced by GFUVE company by widely visiting users and referring to the advantages of the same kind of products home and abroad. The measured part of the product adopts high speed 24bit A/D transmission to send DSP to conduct digital processing, unique power compensation algorithm with patented technology, which largely improves measured degree of accuracy and stability. Central processing part adopts 32-bit ARM embedded technology to make instrument interface novel, function abundant, operation distinct and easy, and performance steady. Class of accuracy: class 0.02 or 0.05, range from 3×12A/3×600V or 3×120A/3×600V, with comfort portable IP65 structure design and light weight.