Marathon 40 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 324T Frame, TEFC - Y571

Catalog #:Y571
Part #:324THFPA8028
  • MAX GUARD® Class H insulation system
  • Constant torque operation from 0 to base speed on vector drive, including TEFC (On Volts/Hertz drives, TEFC motors are limited to 20:1 constant torque
  • Constant HP operation to twice base speed (143-256 frame);1.5 times base (all others)
  • Optimized for operation with IGBT inverter (NEMA Design A)
  • Normally closed thermostats (one per phase, class F)
  • Blue Chip quality, cast iron frame and brackets
  • Patented “fracket” design (TEBC enclosure)
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Weight:545.00 LB
List Price: $8,864.00

General Specifications

UPC: 722856025241 Weight: 545.00 LB
Packaged Length: 35 IN Packaged Width: 26 IN
Packaged Height: 22.89 IN

Nameplate Specifications

Output HP: 40 Hp Output KW: 30.0 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 100.0/50.0 A Speed: 1770 rpm
Service Factor: 1 Phase: 3
Efficiency: 91.7 % Power Factor: 81.5
Duty: Continuous Insulation Class: H
Design Code: INV KVA Code: G
Frame: 324T Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6312 Opp Drive End Bearing Size: 6311
UL: Recognized CSA: Y
CE: Y IP Code: 43

Technical Specifications

Electrical Type: Squirrel Cage Inverter Duty Starting Method: Inverter Only
Poles: 4 Rotation: Reversible
Resistance Main: .124 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: T Overall Length: 31.03 in
Frame Length: 14.75 in Shaft Diameter: 2.125 in
Shaft Extension: 5.43 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 275.00 550.0 225.00 189.0 900 40.00
Full Load 50.00 100.0 119.00 100.0 1,770 40.00
1/3 290.00 580.0 210.00 176.0 600 40.00
No Load 20.00 40.0 0.00 0.0 1,800 40.00
Break-Down 180.00 360.0 320.00 269.0 1,650 66.0 40.00
2/3 250.00 500.0 250.00 210.0 1,200 40.00
Locked-Rotor 300.00 600.0 235.00 197.0 0 36.0 40.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 125 % 150 % 200 %
Current (Amps) 20.00 23.50 31.00 39.50 50.00 61.50 75.00 107.00
Rated Output (KW) 1.50 8.50 16.50 24.50 32.50 41.00 49.50 68.00
Efficiency (%) 0.0 85.5 90.2 91.7 91.7 91.0 90.2 87.5
Power Factor (%) 7.5 46.0 68.0 77.0 81.5 83.0 83.0 80.0
Speed (RPM) 1,800 1,794 1,786 1,778 1,770 1,758 1,746 1,718
Temp. Rise @ FL 0.0 0.0 0.0 0.0 55.0 0.0 0.0 0.0
Torque (ft-lbs) 0.00 29.50 59.00 88.50 119.00 148.00 180.00 245.00
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