Frame Size 112~355 Power 0.55~90KW Speed Range 1:10 Voltage 220/380V;380/660V Frequency 50HZ ;60HZ Protection Class IP23 Insulation Class B Ambi.Temperature -15~+40 °C Altitude Above Sea Level ≤1000M Speed Variation ≤1% Rated Voltage of Controller 220V Max Excitation Voltage of Clutch When On Normal Heated Run ≤90V