Marathon 50 HP General Purpose Motor, 3 phase, 1800 RPM, 230/460 V, 326TS Frame, ODP - E791A

Catalog #:E791A
Part #:326TSTDR16034
  • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
  • Motor will accept a C-face kit
  • Rated 60/50 hertz, 190/380 or 380 volt at next lower horsepower
  • NEMA design B
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Weight:520.00 LB
List Price: $4,634.00

General Specifications

UPC: 722856012722 Weight: 520.00 LB
Packaged Length: 35 IN Packaged Width: 26 IN
Packaged Height: 25.35 IN

Nameplate Specifications

Output HP: 50 Hp Output KW: 37.0 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 121.0/60.5 A Speed: 1775 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 94.5 % Power Factor: 82
Duty: Continuous Insulation Class: B
Design Code: B KVA Code: G
Frame: 326TS Enclosure: Drip Proof
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: 22

Technical Specifications

Electrical Type: Squirrel Cage Induction Run Starting Method: Across The Line
Poles: 4 Rotation: Reversible
Resistance Main: .027 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Rolled Steel
Shaft Type: TS Overall Length: 27.09 in
Frame Length: 15.00 in Shaft Diameter: 1.875 in
Shaft Extension: 4 in Assembly/Box Mounting: F1 ONLY

Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
2/3 290.00 479.0 290.00 196.0 1,200 50.00
Full Load 60.50 100.0 148.00 100.0 1,775 50.00
1/3 325.00 537.0 230.00 155.0 600 50.00
Pull-Up 305.00 504.0 240.00 162.0 900 50.00
Break-Down 198.00 327.0 387.00 261.0 1,700 68.0 50.00
Locked-Rotor 358.00 592.0 283.00 191.0 0 34.5 50.00
No Load 23.00 38.0 0.00 0.0 1,800 50.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 % 140 %
Current (Amps) 23.00 27.00 36.00 47.50 60.50 69.00 75.00 84.50
Rated Output (KW) 0.90 10.50 20.00 29.50 39.50 45.60 50.00 55.50
Efficiency (%) 0.0 91.0 93.6 94.5 94.5 94.1 93.6 93.0
Power Factor (%) 4.5 48.5 70.0 79.0 82.0 83.0 83.2 83.5
Speed (RPM) 1,800 1,795 1,790 1,780 1,775 1,773 1,770 1,760
Temp. Rise @ FL 0.0 0.0 0.0 0.0 50.0 65.0 80.0 95.0
Torque (ft-lbs) 0.00 36.50 73.50 111.00 148.00 171.00 186.00 207.00
Catalog #:GT0078
Part #:326TSTDBD6026
List Price: $4,634.00
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