Optim TEFC Severe Duty Motor
PDH0252D
25 HP
230/460 Voltage
3600 RPM
284TSD Frame
3 – Phase
Amps at 230: 55.6
Amps at 460: 27.84
Enclosure – TEFC
Efficency 92.4%
Drive End Bearing – 6211C3
Non-Drive End Bearing – 6211C3
Totally Enclosed Fan Cooled IP54 Design, IP55 for 5000 Frames and Larger
NEMA Premium Efficiency
AC, Three Phase, 60 Hz, 230/460V (usable on 208V); 460V or 575V. 50 Hz and Other Voltages Under 600V Are Available Upon Request
Cast-Iron Frame and End Brackets
Cast-Iron Conduit Box up to 449T Frames; Fabricated Steel Conduit Box 5000 Frames and Larger, Gasketed, F1 Mounting
Shielded Bearings Frames 140T-280T and Open Bearings with Regreaseable Provisions Frames 280TS, 320T and Larger
Polyrex EM Grease in All Regreaseable Bearings, Multemp SRL Grease in Sealed Bearings
Winding RTD’s, Space Heaters and Provisions for Bearing RTD’s Standard 5000 Frames and Larger
Dual Drilled Feet for Longer Frames (i.e. 145T also drilled for 143T) 449T and Below
-40C to 40C Ambient
CSA Certified for Class I, Division 2, Groups B, C & D (Class I, Zone 2, Groups IIB+H2, IIB and IIA)
CSA Certified Class II, Division 2 (Class II, Zone 22) available for 440 Frames and larger upon request
*HPE High Pulse Endurance Spike Resistant Wire
*Meets NEMA MG1 Part 31.4.4.2
*Speed Ranges up to 10:1 VT. Refer to data sheet for rating specific turn down ratios
Modifications Available Through our Kwikmod Program (Contact your Nearest TWMI Representative for Pricing and Delivery)
Precautions should be taken to eliminate or reduce voltage spikes and shaft currents that may be imposed on the motor by the VFD as stated per NEMA MG1, Part 31.4.4
