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256TTDR16026 – Marathon 20 HP Close-Coupled Pump Motor, 3 phase, 1800 RPM, 230/460 V, 256JM Frame, ODP – E197A

256TTDR16026 – Marathon 20 HP Close-Coupled Pump Motor, 3 phase, 1800 RPM, 230/460 V, 256JM Frame, ODP – E197A

256TTDR16026 Marathon JM Motors

  • NEMA JM pump shaft dimensions
  • JMV frame includes drip cover for vertical mount without base
  • JM frame has rigid base, drip cover not included
  • Mechanically locked on shaft end
  • Continuous duty

Marathon Motors
Regal Beloit

Description

256TTDR16026 – Marathon 20 HP Close-Coupled Pump Motor, 3 phase, 1800 RPM, 230/460 V, 256JM Frame, ODP – E197A

256TTDR16026 Marathon JM Motors

General Specifications

UPC: 722856051028 Weight: 260 LB
Packaged Length: 30.19 IN Packaged Width: 16.5 IN
Packaged Height: 14 IN

Nameplate Specifications

Output HP: 20 Hp Output KW: 14.9 kW
Frequency: 60/50 Hz Voltage: 230/460 V
Current: 49.0/24.5 A Speed: 1770 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 93.6 % Power Factor: 80.5
Duty: Continous Insulation Class: B
Design Code: B KVA Code: G
Frame: 256JM Enclosure: Drip Proof
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6309 Opp Drive End Bearing Size: 6207
UL: Recognized CSA: Y
CE: Y IP Code: 12

Technical Specifications

Electrical Type: Squirrel Cage Induction Run Starting Method: Across The Line
Poles: 4 Rotation: Reversible
Resistance Main: 0 Ohms Mounting: Rigid base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Rolled Steel
Shaft Type: JM Overall Length: 21.89 in
Shaft Diameter: 1.625 in Shaft Extension: 5.28 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)
Pull-Up 135.00 113.00 190.0 20.00
Break-Down 160.00 269.0 20.00
Locked-Rotor 140.00 115.00 193.0 0 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 % 150 %
Current (Amps) 9.00 11.00 14.70 19.30 24.50 28.00 30.00 0.00
Rated Output (KW) 0.50 4.17 8.02 11.75 15.85 18.20 19.75 0.00
Efficiency (%) 0.0 91.5 92.5 93.4 93.6 91.9 91.5 0.0
Power Factor (%) 6.1 44.2 67.3 77.6 80.5 81.6 82.6 0.0
Speed (RPM) 1,800 1,792 1,785 1,776 1,765 1,760 1,756 0
Temp. Rise @ FL 0.0 0.0 0.0 0.0 35.0 45.0 0.0 0.0
Torque (ft-lbs) 0.00 14.90 29.80 44.60 59.50 68.40 74.40 0.00

Marathon Motors
Regal Beloit