... :Senpoo certificate CE ,ISO Insulation Class IP21 Newly Design STC Series generators ofSenpoo brand are used in town, countryside, worksites, villages ... , IP23, Insulation Class: B or F, adopting harmonic excitation system, safe and reliable using, easy operation and maintenance.The generators are ... .5(kVA) 3~50 ( kW) Voltage: 400/230(V) STC series Brush Alternator