The Research on 3.3kv Power System Scheme for Underground Mine

This paper introduces the character of 3.3kV power system for underground mines overseas.The scheme and technical parameters of the power supply system are studied.By connecting with the standard and requirements of coalmine in our country,two sets of schemes of 3.3kV power system and protective system for underground mines are designed.It provides theoretic base for research and design of technical standard of 3.3kV power system for underground mines.