... reserved as emergence power source.The generators are drip-proof with rotary field type, IP23,Insulation Class:B or F, adopting ... three-phase, four-wire type, adopting star connection with neutral point,. The rated line voltage is 400V, phase voltage 230V, frequency 50Hz ... the customer’s request.They can be coupled with a prime mover directly or through v-belt making right or reverse continuous ...