1.Medium Frequency Generators /alternator 2.5-1000kW, 400Hz, 8-48 Pole, 100-3600RPM ... international standard IEC60034-22: 2004 Reciprocating internal combustion engine driven alternator (RIC) and the People's Republic of China national ... ventilation structure, licensed with national technical patent6.Unique Compound Excitation Technology to endow the products with excellent dynamic performance7.Unique ...