Description
Marathon, 256TTTCD16544, Cooling Tower Motor, Squirrel Cage Inverter Rated, Cooling Tower Motors, NEMA/Definite Purpose Motors Application, 83.5 % Power Factor, 93 % Efficiency, Squirrel Cage Motor Special Features, 20 & 15 hp, 230/460, 190/380 V, 48.5/24.2 & 44.5/22.3 A, 60 & 50 Hz Frequency, 3 ph, 1768 & 1472 rpm Speed, 1 Speed, TEAO Enclosure, 256TV Frame, 1.625 in Dia Shaft, Reversible Rotation, 1.15 Service Factor, Ball Bearing, Rigid Base Mounting, 40 deg C, Insulation Class: Class H, Cast Iron
Features:
- Rated 60/50 hertz, 190/380 or 380 V at next lower horsepower
- Extended grease tubes, regreasable in service T-drains provided for effective drainage (Installed in both endshields)
- Bearing Current Protection (BCP), Shaft grounding ring (SGRs) installed
- Inpro/Seal quality VBX bearing isolators, Ball bearings
- Totally enclosed fan cooled with IP-55 deg of protection
- High ratio of pullout full load torque
- Ratings up to approximately 450 kW
- larger outputs available for certain specific requirements
- Supply voltages up to 660 V
- Insulation class F/F (stator/rotor) with temperature rise limited to Class B/B stator/rotor
Applications:
Suitable for 20:1 VT and 20:1 CT on VFD, MAX GUARD® Class F insulation system 1.15 Service Factor on sinewave, 1.0 Service Factor on Inverter Power and Suitable for all angle mounting,
Standards/Approval:
- IP56
- NEMA Premium® Standard
- EISA2007
- CE Mark
- UL Recognized
- CSA Certified
