... 690V Frequency 50,60HZ Temperature CCS45 (VDE45) 1FC3 Brushless Alternator,The brushless generators manufactured by us under Siemens.Rating Capacity266-7000voltage400V ... poles4,6,8,10frequency50,60Hz High reliability and durability Optimum phase compound excitation system makes the construction simply and reliability. ... 5%. The highest protection degree is Ip54. TFC6/J6 Brushless synchronous generator