... of AC generators, Three Phase, IP23, Class H, Rated voltage 400V, 110-690V for option, AVR. . Specification:FRAME:All Industnal standard alternator ... half-keytesting balance.TERMINAL AND TERMINAL BOX:The three-field alternator has leads brought out to the terminals In the terminal ... ,16,18 ,21LYG series doubl e-beanng. engine adaptor to SAE#OO ,0 ,1/2. 1,2 ,3. 4 ,5 Brushless synchronous generator