ST series generators are mainly designed to serve as power generating unit of small capacity which supply electricity for lighting purpose in ships as well as for household electric devices used in towns or villages. The construction of the generators is of drip-proof, salient pole rotating field self-excitaltion and constant voltage type. The altemator inside is used with high quality electric magnetic and electrical materials.Stator insulation is of Class E (or B). rotor insulation is of Class B. These generators are excellent in appearanee. they are consolidate in construction and easy to maintain. Dimensions are adopted lEC standard, they are suitable for Australia, Europe, America and other countries if the end covers are model B. The alternators are of harmonic wave self-ex- citation constant voltage system and automatic voltage control excitation constant voltage system, both of them have good dynamic characteristic performance, convenient and reliable in operation.