Marathon 25 HP General Purpose Motor, 3 phase, 1800 RPM, 230/460 V, 284TC Frame, TEFC - GT1228A

Catalog #:GT1228A
Part #:284TTFCD6028
  • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
  • Hazardous Duty Division 2, Zone 2, Class I, Groups A,B,C,D, Temperature code T2B
  • IP55 enclosure on cast iron frames
  • Inverter Duty 10:1 Variable Torque and up to 10:1 Constant Torque
  • Class F Insulation
  • Standard F1, reversible to F2 assembly. Dual frame mounting holes.
  • 12 Leads for WYE-DELTA, part winding on low voltage, or across-the-line starting
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Weight:470 LB
List Price: $3,723.00

General Specifications

UPC: 722856064233 Weight: 470 LB
Packaged Length: 31.77 IN Packaged Width: 28.03 IN
Packaged Height: 28.14 IN

Nameplate Specifications

Output HP: 25 Hp Output KW: 18.7 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 61.0/30.5 A Speed: 1775 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 93.6 % Power Factor: 83
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: G
Frame: 284TC Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6311 Opp Drive End Bearing Size: 6211
UL: Listed CSA: Y
CE: Y IP Code: 55
Hazardous Location: DIVISION 2 T2B

Technical Specifications

Electrical Type: Squirrel Cage Inverter Rated Starting Method: Line Or Inverter
Poles: 4 Rotation: Reversible
Resistance Main: .2988 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: 26.65 in
Frame Length: 11.41 in Shaft Diameter: 1.875 in
Shaft Extension: 4.62 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)
Break-Down 110.00 362.0 192.00 260.0 1,630 68.0 25.00
1/3 162.00 533.0 119.00 161.0 600 25.00
2/3 138.00 454.0 152.00 205.0 1,200 25.00
Locked-Rotor 182.00 599.0 144.00 195.0 0 36.0 25.00
Full Load 30.40 100.0 74.00 100.0 1,772 83.0 25.00
No Load 13.60 45.0 0.00 0.0 1,800 5.0 25.00
Pull-Up 150.00 493.0 122.00 165.0 900 25.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 13.60 15.20 19.10 24.30 30.40 34.30 37.10
Rated Output (KW) 0.65 5.20 10.00 15.00 19.70 23.00 25.10
Efficiency (%) 0.0 90.2 93.0 93.6 93.6 93.3 92.4
Power Factor (%) 5.0 43.5 66.5 77.5 83.0 84.5 85.0
Speed (RPM) 1,800 1,795 1,788 1,782 1,775 1,772 1,770
Temp. Rise @ FL 0.0 0.0 0.0 0.0 55.0 75.0 85.0
Torque (ft-lbs) 0.00 18.30 36.70 55.20 74.00 85.20 93.00
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