ST series generators are mainly designed to serve as power generating unit of small capacity, which supply electricity for lighting purpose in ships, for house-hold electric devices used 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 interior is used with high quality electric magnetic and Electric materials. Stator insulation is class B. These generators are elegant in appearance, tight in construction and easy maintenance. 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-exciation constant voltage system and automatic voltage control excitation constant voltage system, both of them have Excellent dynamic performance, convenient and reliable in operation. These generators are excellent in appearance and easy to maintain. Dimensions are adopted according to I. E. C Standards. 
The voltage of the alternator is 230V of 115V, the frequency is 50Hz. Its operation mode is of continuous duty. It can provide 60Hz and the other voltage's generator according to necessary. 
The other voltage's generator according to necessary. 
The alternator can be coupled with a prime mover directly or through a V-belt, with 5% change of speed of the prime mover under load Variation of 0~100%, at a voltage of 230V or 115V, 50Hz or 60Hz to get a satisfactory constant voltage performance. 

Operating Conditions: 
-Environment Temperature≤ 40 C 
-Altitude≤ 1000m 
-Rated Frequency and Rotation 
Speed: 50Hz, 1500r/min, 60Hz, 1800r/min 
-Rated Voltage: 400/230V, three-phase 
Four-wire system. Environment Relative Humidity≤ 90% 
-The alternators can be designed to be used 
In muggy damp area or on boat.