... canopy is optional8) 230 / 400V AC, 50Hz / 60Hz, 0.8pF three-phase and four wires alternating current output9) Frequency: <3%10) Frequency ... oil pulls down, over speed, over load and over currentb) Operation display: i) Unit voltage, tri-phase load current and frequency ... , 3 filter, electric systems b) Alternatorc) Steel structure d) Fan and water tank cooling systeme) Flange connector f) 12 / 24V ...