Marathon 20 HP Explosion Proof Motor, 3 phase, 1200 RPM, 230/460 V, 286T Frame, EPFC - E507

Catalog #:E507
Part #:286TTGN16577
  • Meets NEMA Premium® efficiency
  • MAX GUARD® Class F insulation system
  • Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
  • Internal and external epoxy paint
  • Precision balanced to .08”/sec, Extended grease tubes
  • Normally closed thermostats (must be connected to control circuit)
  • Meets temperature code T3B, Shaft slinger
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Weight:593.00 LB
List Price: $6,143.00

General Specifications

UPC: 722856023483 Weight: 593.00 LB
Packaged Length: 37.88 IN Packaged Width: 31.88 IN
Packaged Height: 20.02 IN

Nameplate Specifications

Output HP: 20 Hp Output KW: 14.9 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 53.5/26.8 A Speed: 1175 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 91.7 % Power Factor: 76
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: G
Frame: 286T Enclosure: Explosion Proof Fan cooled
Thermal Protection: Thermostats (N/C) Ambient Temperature: 40 °C
Drive End Bearing Size: 6311 Opp Drive End Bearing Size: 6210
UL: UL Listed And CSA Certified CSA: Y
CE: N IP Code: 54
Hazardous Location: EXP PROOF CL I GR C&D CL II GR F&G T3B

Technical Specifications

Electrical Type: Squirrel Cage Inverter Rated Starting Method: Line Or Inverter
Poles: 6 Rotation: Reversible
Resistance Main: .385 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: 27.71 in
Frame Length: 14.25 in Shaft Diameter: 1.875 in
Shaft Extension: 4.82 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)
Locked-Rotor 145.00 541.0 157.00 176.0 0 36.0 20.00
Pull-Up 135.00 504.0 152.00 171.0 600 20.00
Break-Down 93.50 349.0 238.00 267.0 1,070 64.5 20.00
2/3 125.00 466.0 165.00 185.0 800 20.00
1/3 140.00 522.0 145.00 163.0 300 20.00
No Load 12.50 47.0 0.00 0.0 1,200 20.00
Full Load 26.80 100.0 89.00 100.0 1,174 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 12.50 14.00 17.00 21.50 26.80 31.00 32.50
Rated Output (KW) 0.80 4.00 8.00 12.00 16.00 19.00 20.50
Efficiency (%) 0.0 87.5 91.7 91.7 91.7 91.0 91.0
Power Factor (%) 20.5 38.5 59.5 70.5 76.0 78.0 79.0
Speed (RPM) 1,200 1,195 1,190 1,180 1,175 1,170 1,167
Temp. Rise @ FL 0.0 45.0 40.0 0.0 60.0 85.0 105.0
Torque (ft-lbs) 0.00 22.00 44.00 66.50 89.00 103.00 112.00
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