... canopy is optional8) 230 / 400V AC, 50Hz / 60Hz, 0.8pF three-phase and four wires alternating current output9) Frequency: <3%10) Frequency ... load and over currentb) Operation display: i) Unit voltage, tri-phase load current and frequency displayii) Water temperature, oil pressure displayiii ... , ATS & paralleling system, Soundproof Canopy and Moving Trailer. Cummins Diesel generator 20KW to 1200KW