Marathon 75 HP Explosion Proof Motor, 3 phase, 1200 RPM, 230/460 V, 405T Frame, EPFC - U973

Catalog #:U973
Part #:405TTGS1086
  • Meets NEMA Premium® efficiencies, Bearing Current Protection (BCP), as noted
  • 10:1 Variable torque, see Inverter Duty column for constant torque
  • MAX GUARD® Class F insulation
  • Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
  • Internal and external surfaces treated with epoxy paint
  • 1.15 Service Factor on sinewave or 1.0 Service Factor on IBGT power
  • Precision balanced to .08”/sec, Extended grease tubes
  • Normally closed thermostats (must be connected to control circuit)
  • Meets temperature code T3B, Shaft slinger, Nameplated 60/50 Hz, 190/380 Volts, at next lower HP, as noted
  • Ball Bearings (except as noted), Ball Bearings (except as noted)
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Weight:1,384.00 LB

General Specifications

Weight: 1,384.00 LB Packaged Length: 44.88 IN
Packaged Width: 39.25 IN Packaged Height: 28.62 IN

Nameplate Specifications

Output HP: 75 Hp Output KW: 56 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 185/92.5 A Speed: 1185 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 93.6 % Power Factor: 81
Duty: CONTINUOUS Insulation Class: F
Design Code: B KVA Code: G
Frame: 405T Enclosure: EPFC
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6316 Opp Drive End Bearing Size: 6313
UL: UL Listed And CSA Certified CSA: Y
CE: N IP Code: 54
Hazardous Location: EXP PROOF CL I GR C&D T2A

Technical Specifications

Electrical Type: SQ CAGE IND RUN Starting Method: ACROSS THE LINE
Poles: 6 Rotation: REV
Resistance Main: 0.1 Ohms Mounting: RIGID
Motor Orientation: HORIZONTAL Drive End Bearing: BALL
Opp Drive End Bearing: BALL Frame Material: CAST IRON
Shaft Type: T Overall Length: 37.75 in
Frame Length: 16.75 in Shaft Diameter: 2.88 in
Shaft Extension: 7.5 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)
Full Load 92.50 100.0 333.00 100.0 1,185 75.00
Pull-Up 500.00 541.0 675.00 203.0 600 75.00
2/3 450.00 486.0 775.00 233.0 800 75.00
Locked-Rotor 542.00 586.0 700.00 210.0 0 39.0 75.00
1/3 525.00 568.0 650.00 195.0 400 75.00
Break-Down 350.00 378.0 875.00 263.0 1,125 68.0 75.00
No Load 40.50 44.0 0.00 0.0 1,200 75.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 40.50 45.50 57.50 73.50 92.50 105.00 113.00
Rated Output (KW) 1.50 15.50 30.00 45.00 60.00 68.50 75.50
Efficiency (%) 0.0 89.5 93.0 93.6 93.6 93.0 92.4
Power Factor (%) 4.5 43.0 65.0 76.0 81.0 82.5 83.0
Speed (RPM) 1,200 1,195 1,192 1,188 1,185 1,180 1,178
Temp. Rise @ FL 0.0 0.0 0.0 0.0 75.0 105.0 0.0
Torque (ft-lbs) 0.00 82.50 165.00 249.00 333.00 385.00 418.00
Catalog #:E577
Part #:405TTGS6589
List Price: $18,596.00
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