4-pole farrand brushless alternator specifications 3 phase h class temperature-rise(125c) winding 311 Alternator mark Farrand Power 6.5kw~ 2000kw Exciter type Shunt self- excited brushless Power factor 0.8lagged Frequency/ speed 50hz/ 60hz, 1500rpm/ 1800rpm Characters 4 poles, 1 or 2 bearing A.V.R model Sx440/ sx460/ mx341 With avr voltage regulation 0.5%~ 1.5% Insulation grade H Protection grade Ip23 Thf/tif Thf=2%, tif=50 Winding pitch 2/ 3 Lead number 12 Certificate Ce, iso9001: 2008, etc Warranty 24 months