ST series generators are mainly designed to serve as power generating unit of small capacity, which supply electricity for lighting purpose in ships, for household electric device use in towns or villages. The construction of the generators is of drip-proof, salient pole rotating field self-excitation and constant voltage type. The alternator 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 elegant in appearance, tight in construction and easy maintain. IEC standard are adopted on dimension, these dimension are suitable for using in Australia, Europe, America and other countries with the end covers to be model B. The alternators are of harmonic wave self-excitation constand voltage system and automatic voltage control excitation constant voltage system both of them have excellent dynamic characteristic performance convenient and reliable in operation. OPERATING CONITIONS under the following enviroment the generator could run continuously 1.Altitute: not exceed 1000m 2.Ambient temperature -15癈--40癈 3.Relative air humidity:not exceed 90%