Features: • Design - NEMA Standard MG-1, design B, ambient temperature of 40°C, altitude 1000M, temperature rise B. • Agency Listings and Standard - NEMA MG1, IEEE, IEC, DOE registered, NRCan, CSAus and CSA Certified, CE and RoHS Compliant • Service Factor - 1.15 • Division 2 / Zone 2 Class 1 (gases), Groups A, B, C, D • Electrical Supply - 3 phase, 230/460VAC, 575VAC @ 60 hz, 3 phase 190/380VAC @ 50 Hz rated to the next lower HP. (± 10% Voltage tolerance) • Windings - Highest quality Corona resistant, Inverter duty copper wire. VPI impregnated with additional dip and bake. • Efficiency - Integral HP models meet or exceed NEMA Premium efficiency levels. • Insulation - Class F insulation, with non-hydroscopic motor leads. • Bearings - Permanently Lubricated High quality Double Shielded Ball Bearings with oversized DE bearings. Lithium based grease operating temperature range - 25° through 175°C. • Enclosure Protection - IP55 • Frame Construction - Rolled Steel with cast aluminum end shields. • Conduit Box - With ½ NPT knockouts positioned for wiring access every 90° with rubber gasket between box and motor frame. • Inverter Duty - Constant torque: 10/1 ratio, variable torque: 20/1 ratio Nameplate - Stainless steel with etched details. • Drain Hole - Positioned in the stator frame at the lowest point, when motors a horizontally mounted. • Fan cover - Plastic fan & heavy duty plastic fan guard • Warranty - 1 year