... Frequency 50,60HZ Temperature CCS45 (VDE45) 1FC3/J3 Brushless Alternator,The brushless generators manufactured by us under Siemens.Rating Capacity266-7000voltage400V ... ,450V,690Venvironment temperatureCCS45 (VDE45)poles4,6,8,10frequency50,60Hz ... The highest protection degree is Ip54. 1FC3/J3 Brushless Alternator