Marathon 20 HP General Purpose, 3 phase, 3600 RPM, 230/460 V, 160M V Frame, TEFC - R336

Catalog #:R336
Part #:160MTFC4512
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General Specifications

Weight: 269.00 LB Packaged Length: 0 IN
Packaged Width: 0 IN Packaged Height: 0 IN

Nameplate Specifications

Output HP: 20 Hp Output KW: 14.9 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 46/23 A Speed: 3545 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 91.7 % Power Factor: 88.9
Duty: CONTINUOUS Insulation Class: F
Design Code: B KVA Code: H
Frame: 160M V Enclosure: TEFC
Thermal Protection: NOT Ambient Temperature: 40 °C
Drive End Bearing Size: 6309 Opp Drive End Bearing Size: 6308
UL: No CSA: Y
CE: Y IP Code: 55

Technical Specifications

Electrical Type: SQ CAGE INV RATED Starting Method: LINE OR INVERTER
Poles: 2 Rotation: REV
Resistance Main: 0.443 Ohms Mounting: RIGID
Motor Orientation: HORIZONTAL Drive End Bearing: BALL
Opp Drive End Bearing: BALL Frame Material: CAST IRON
Shaft Type: STANDARD IEC Overall Length: 24.21 in
Shaft Diameter: 1.67 in Shaft Extension: 4.33 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)
1/3 210.00 80.00 1,200 20.00
2/3 185.00 85.00 2,400 20.00
Break-Down 128.00 105.00 3,165 74.0 20.00
Full Load 22.50 29.60 100.0 3,552 91.0 20.00
No Load 6.40 0.00 0.0 3,600 12.0 20.00
Locked-Rotor 218.00 92.00 0 46.0 20.00
Pull-Up 200.00 80.00 1,800 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 6.40 8.60 12.80 17.60 22.50 25.70 28.00
Rated Output (KW) 1.00 4.50 8.50 12.50 16.50 19.00 20.80
Efficiency (%) 0.0 80.0 87.5 89.5 90.2 90.2 89.5
Power Factor (%) 12.0 68.0 84.0 88.0 90.0 91.0 91.0
Speed (RPM) 3,600 3,588 3,575 3,565 3,552 3,545 3,540
Temp. Rise @ FL 0.0 0.0 0.0 0.0 75.0 105.0 0.0
Torque (ft-lbs) 0.00 7.30 14.70 22.10 29.60 34.20 37.20
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