Marelli 225 Frame - 18.5kW 3ph 8 Pole AC Motor for 400V or 660V 3 phase supply. Use with 400V Variable Frequency Drives or a fixed frequency mains supply at 50Hz.
Can be used over a 10:1 Speed Control range from 73RPM to 1450RPM, with suitable de-rating at the lower speeds.
Fixed mains supply output is 18.5kW (25HP) x 725RPM at 400V x 50Hz 3ph.
Full Load Current - 40A at 400V.
Overload - 150% x 60seconds.
Power Factor is 0.76 when mains connected at 50Hz.
Set terminal box links 'three a-breast' for 400V 'Delta' connection.
Set terminal box links ‘two at one side’ for 660V 'Star' connection.
Cast Aluminium motor is 405mm Wide x 830mm Long x 523mm high overall in its IP55 enclosure.
Foot mount on 18.5mm holes at 356mm wide x 286mm centres 149mm back from shaft shoulder.
Shaft side load is 418kg for 20,000hrs life (6313-Z-C3 bearing)
Weight is 195kg.
Rated at 40C Ambient.
Ventilation space required at rear cooling air intake.
Full part number is - A4C225S8 B3
For Variable Speed use…
Part Time Output when Inverter powered is...
122Nm - 18.5kW (25HP) x 1450RPM at 100Hz
243Nm - 18.5kW (25HP) x 725RPM at 50Hz
243Nm - 9.25W (12.5HP) x 363RPM at 25Hz
243Nm - 1.85kW (2.5HP) x 73RPM at 5Hz
Continuous Output when Inverter powered is...
122Nm - 18.5kW (25HP) x 1450RPM at 100Hz
243Nm - 18.5kW (25HP) x 725RPM at 50Hz
207Nm - 7.9kW (10.5HP) x 363RPM at 25Hz
122Nm - 0.9kW (1.25HP) x 73RPM at 5Hz