Marathon 15 HP Definite Purpose AC Motor, 3 phase, 3600 RPM, 230/460 V, 254TC Frame, EPFC - C307

Catalog #:C307
Part #:254TTGP7021
  • Frame Construction:56 Frame-Rolled Steel.143-256TC-Cast Iron “Blue Chip”
  • Thermal Protection:56 Frame-Auto Overload,143-256TC-T-Stats
  • Class/Group:56 Frame-Class I, Groups C & D,143-256TC-Class I, Group D
  • Temperature Code:56 Frame-Class II, Groups F & G,143-256TC-Class II, Groups F & G
  • Conduit Box:56 Frame-T3B;143-256TC-T3B
  • Service Factor:56 Frame-Shipped Loose;143-256TC-Installed
  • UL File:56 Frame-1.0 (unless otherwise noted);143-256TC-1.0 (unless otherwise noted)
  • CSA File:56 Frame-E12044,LR47504;143-256TC-E12044,LR47504
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Weight:301.00 LB

General Specifications

Weight: 301.00 LB Packaged Length: 30.75 IN
Packaged Width: 21.75 IN Packaged Height: 18 IN

Nameplate Specifications

Output HP: 15 Hp Output KW: 11.2 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 39/19.4 A Speed: 3515 rpm
Service Factor: 1 Phase: 3
Efficiency: 85.5 % Power Factor: 85
Duty: CONTINUOUS Insulation Class: F
Design Code: B KVA Code: G
Frame: 254TC Enclosure: EPFC
Thermal Protection: NOT Ambient Temperature: 40 °C
Drive End Bearing Size: 6309 Opp Drive End Bearing Size: 6207
UL: No CSA: N
CE: N IP Code: 54

Technical Specifications

Electrical Type: SQ CAGE INV RATED Starting Method: LINE OR INVERTER
Poles: 2 Rotation: REV
Resistance Main: 0.894 Ohms Mounting: ROUND
Motor Orientation: HORIZONTAL Drive End Bearing: BALL
Opp Drive End Bearing: BALL Frame Material: CAST IRON
Shaft Type: T Overall Length: 24.19 in
Frame Length: 11.75 in Shaft Diameter: 1.63 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 96.00 495.0 42.00 187.0 2,500 15.00
Pull-Up 98.00 505.0 36.00 160.0 2,000 15.00
Break-Down 65.00 335.0 57.00 253.0 3,200 72.0 15.00
Locked-Rotor 102.00 526.0 35.00 156.0 0 43.0 15.00
1/3 100.00 515.0 32.00 142.0 600 15.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 7.50 9.00 11.50 15.00 19.40 22.00 24.00
Rated Output (KW) 1.00 3.50 6.50 10.00 13.00 15.00 16.50
Efficiency (%) 0.0 75.0 83.0 85.5 85.5 85.0 85.0
Power Factor (%) 17.0 53.5 73.0 81.5 85.0 86.0 86.5
Speed (RPM) 3,600 3,578 3,557 3,535 3,515 3,490 3,480
Temp. Rise @ FL 0.0 45.0 40.0 0.0 80.0 110.0 0.0
Torque (ft-lbs) 0.00 5.50 11.00 16.50 22.50 26.00 28.50
Catalog #:C307A
Part #:254TTGP14013
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