... Frequency50/60HZSpeed1500/1800rpmVoltage230/400V, 120/240VPower factor0.8Connection method3 phase 4 wire, 1 phase 3 wireFuel consumptionLess than 258g/kw.hEngineCummins, Perkins and ... , over load and over currentb) Operation display: Unit voltage, tri-phase load current and frequency display Water temperature, oil pressure display ...