... , 4 Poles, Rotation Magnet;2) IP21-23(NEMA1) enclosure is standard for all industrial alternator;3) The industrial system is Class ... range of flange adopters and single bearing disc coupling;6) Standard 2/3 pitch windings;7) AVR auto voltage regulator, auto ... ) High Safety: Comply with GB/T 2820-97 standard; Comply with CE safety standard; Self-protection function.501Hz, 1500rpm, 3P, 4Wires, 400V/230V ...