Test-330 three phase microcomputer protection relay test system is the highly efficient relay test equipment of GFUVE company. It is produced by referring to Technical Condition for “DL/T624-2010” Microcomputer Relay & Protection Test Device issued by the original Power Department, extensively listening to the opinions of users, carefully reviewing the developing and producing experience of the former generations of products and adopting the modern latest digital technology, high precision electronic apparatus, microcomputer system and new circuit and new structure. This model relay test equipment can independently finish device test in professional fields of microcomputer protection, relay protection, excitation, metering, fault recording, etc. and is widely applied to scientific research, production and electrical test sites in electric power, petrochemical, metallurgy, railway, aviation and military industries.