FUJIAN YONGDASHENG ELECTRICAL MACHINERY CO., LTD supply 3-phase brushless A.C. synchronous generator,synchronous generators,A.C. synchronous generators, 3-phase synchronous generators,synchronous generators,brushless generator,3-phase brushless synchronous generator,brushless A.C.generator. YDSF SERIES 4POLE Brushless, self exciting Class 'H' insulation Standard degree of protection is IP22 Self regulation With fan cooling Resist humid grease AC excitation, rotating rectification tube Stator grease insulation covered Rotator and excitation high polymer, Resist the corruption of oil and acid. Rotator balance is in accordance with BS5625 Standard 12.5 High-quality lubrication sealed long-time bearing Rotator silicon steel close tight. Specific information on the company's Web site can be seen.