Marathon 250 HP Vertical Pump Motor, 3 phase, 1800 RPM, 460 V, 445HPV Frame, ODP - M862

Catalog #:M862
Part #:445TTDS7636
  • Normal and Medium thrust
  • Ball bearings and angular contact bearings for medium thrust applications
  • Class B insulation
  • 1.15 Service Factor
  • Suitable for 230 volt part winding start through 100 HP (dual voltage motors)
  • Heavy duty lifting lugs
  • Drip cover/canopy cap included
  • UL Recognized and CSA Certified
  • UL Listed for Fire Pump applications (except as noted)
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Weight:1,550.00 LB

General Specifications

Weight: 1,550.00 LB

Nameplate Specifications

Output HP: 250 Hp Output KW: 187 kW
Frequency: 60 Hz Voltage: 460 V
Current: 287 A Speed: 1780 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 95 % Power Factor: 86
Duty: CONTINUOUS Insulation Class: B
Design Code: B KVA Code: F
Frame: 445HPV Enclosure: DP
Thermal Protection: NOT Ambient Temperature: 40 °C
Drive End Bearing Size: 6316 Opp Drive End Bearing Size: 6316
UL: Recognized CSA: Y
CE: Y IP Code: 12

Technical Specifications

Electrical Type: SQ CAGE IND RUN Starting Method: ACROSS THE LINE
Poles: 4 Rotation: REV
Resistance Main: 0.021 Ohms Mounting: ROUND
Motor Orientation: SHAFT DOWN Drive End Bearing: BALL
Opp Drive End Bearing: BALL Frame Material: CAST IRON
Shaft Type: HP Overall Length: 36.26 in
Frame Length: 20.5 in Shaft Diameter: 2.13 in
Shaft Extension: 4.5 in Assembly/Box Mounting: F1/F2 CAPABLE

Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
Full Load 287.00 100.0 738.00 100.0 1,780 250.00
Pull-Up 1,350.00 470.0 1,175.00 159.0 1,200 250.00
Locked-Rotor 1,650.00 575.0 1,325.00 180.0 0 35.0 250.00
1/3 1,550.00 540.0 1,150.00 156.0 600 250.00
No Load 81.00 28.0 0.00 0.0 1,800 250.00
2/3 1,250.00 436.0 1,200.00 163.0 1,400 250.00
Break-Down 910.00 317.0 1,675.00 227.0 1,705 65.5 250.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 81.00 105.00 156.00 218.00 287.00 330.00 361.00
Rated Output (KW) 3.50 50.00 98.00 147.00 196.00 228.00 247.00
Efficiency (%) 0.0 93.0 95.0 95.4 95.0 94.5 94.1
Power Factor (%) 5.0 60.0 78.5 84.5 86.0 86.5 86.0
Speed (RPM) 1,800 1,796 1,789 1,784 1,780 1,775 1,770
Temp. Rise @ FL 0.0 0.0 0.0 0.0 70.0 95.0 0.0
Torque (ft-lbs) 0.00 183.00 367.00 552.00 738.00 852.00 926.00
Catalog #:M862A
Part #:445TTDS14062
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