1. Rare earth permanent magnet for rotor.
2. 100%COPPER wire winding for stator.
3. Brushless and easy maintaince. Compared to old ST it is bursh and always need to replace carbon brush.
4. Digital inverter to insure stable voltage and frequency.
5. High efficiency and can save 20% fuel than old ST
6. Also this new design CT alternator is more compact and it can help you to save sea freight. For example, 816sets CT- 3KW can be put in 20 ft. It is more than double quanty than old ST alternator.
7.Reliable quality, 100% warranty, variable speed but stable frequency and voltage