Marathon 350 HP Explosion Proof Motor, 3 phase, 1800 RPM, 460 V, 449T Frame, EPFC - H504A

Catalog #:H504A
Part #:449TTGS16557
  • 10:1 Variable torque, see Inverter Duty column for constant torque
  • MAX GUARD® Class F insulation system
  • 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 IGBT power
  • Precision balanced to .08”/sec.
  • Extended grease tubes
  • Normally closed thermostats (must be connected to control circuit)
  • Meets temperature code T3B, Shaft slinger
  • Roller bearing on shaft end for belted load only
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Weight:3,300.00 LB
List Price: $52,652.00

General Specifications

UPC: 722856051714 Weight: 3,300.00 LB
Packaged Length: 56 IN Packaged Width: 46 IN
Packaged Height: 29.41 IN

Nameplate Specifications

Output HP: 350 Hp Output KW: 260.0 kW
Frequency: 60 Hz Voltage: 460 V
Current: 395.0 A Speed: 1785 rpm
Service Factor: 1 Phase: 3
Efficiency: 96.2 % Power Factor: 86.5
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: G
Frame: 447/449T Enclosure: Explosion Proof Fan cooled
Thermal Protection: Thermostats (N/C) Ambient Temperature: 40 °C
Drive End Bearing Size: NU319 Opp Drive End Bearing Size: 6318
UL: UL Listed; also, UL Certified for Canada CSA: N
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: Part Wdg Start & Wye Start Delta Run Or Inverter
Poles: 4 Rotation: Reversible
Resistance Main: .0075 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Roller
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: T Overall Length: 51.85 in
Frame Length: 28.75 in Shaft Diameter: 3.375 in
Shaft Extension: 8.76 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 2,000.00 506.0 2,100.00 204.0 1,200 350.00
1/3 2,400.00 608.0 1,900.00 184.0 600 350.00
Locked-Rotor 2,550.00 646.0 2,075.00 201.0 0 31.0 350.00
No Load 115.00 29.0 0.00 0.0 1,800 350.00
Full Load 395.00 100.0 1,030.00 100.0 1,785 350.00
Pull-Up 2,250.00 570.0 1,950.00 189.0 900 350.00
Break-Down 1,350.00 342.0 2,400.00 233.0 1,725 62.0 350.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 115.00 148.00 218.00 304.00 395.00 450.00 490.00
Rated Output (KW) 6.00 71.00 137.00 204.00 271.00 314.00 342.00
Efficiency (%) 0.0 92.4 95.4 96.2 96.2 95.8 95.4
Power Factor (%) 5.5 59.0 77.5 84.0 86.5 86.5 86.5
Speed (RPM) 1,800 1,796 1,794 1,790 1,785 1,782 1,780
Temp. Rise @ FL 0.0 0.0 0.0 0.0 80.0 110.0 0.0
Torque (ft-lbs) 0.00 256.00 512.00 770.00 1,030.00 1,185.00 1,290.00
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