My Account                   Order Status
Search

256TTGN1026 – Marathon 20 HP Explosion Proof Motor, 3 phase, 1800 RPM, 230/460 V, 256T Frame, EPFC – U954

256TTGN1026 – Marathon 20 HP Explosion Proof Motor, 3 phase, 1800 RPM, 230/460 V, 256T Frame, EPFC – U954

256TTGN1026 Marathon Explosion Proof NEMA Motors

Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.

  • 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)

Marathon Motors
Regal Beloit

Description

256TTGN1026 – Marathon 20 HP Explosion Proof Motor, 3 phase, 1800 RPM, 230/460 V, 256T Frame, EPFC – U954

256TTGN1026 Marathon Explosion Proof NEMA Motors

Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.

General Specifications

Packaged Length: 0 IN Packaged Width: 0 IN
Packaged Height: 0 IN

Nameplate Specifications

Output HP: 20 Hp Output KW: 14.9 kW
Frequency: 60/50 Hz Voltage: 230/460 V
Current: 50/25 A Speed: 1765 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 91 % Power Factor: 82
Duty: CONTINUOUS Insulation Class: F
Design Code: B KVA Code: F
Frame: 256T Enclosure: EPFC
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6309 Opp Drive End Bearing Size: 6210
UL: No CSA: N
CE: N IP Code: 54
Hazardous Location: EXP PROOF CL I GR C&D T2A

Technical Specifications

Electrical Type: SQ CAGE INV RATED Starting Method: LINE OR INVERTER
Poles: 4 Rotation: REV
Resistance Main: 0.468 Ohms Mounting: RIGID
Motor Orientation: HORIZONTAL Drive End Bearing: BALL
Opp Drive End Bearing: BALL Frame Material: CAST IRON
Shaft Type: T Overall Length: 25.27 in
Frame Length: 12.25 in Shaft Diameter: 1.63 in
Shaft Extension: 4.18 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 140.00 560.0 108.00 182.0 0 41.5 20.00
1/3 135.00 540.0 92.00 155.0 200 20.00
Full Load 25.00 100.0 59.50 100.0 1,765 20.00
Break-Down 86.00 344.0 145.00 244.0 1,625 67.0 20.00
Pull-Up 125.00 500.0 94.00 158.0 900 20.00
2/3 115.00 460.0 105.00 176.0 1,250 20.00
No Load 9.50 38.0 0.00 0.0 1,800 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 9.50 11.50 15.00 19.50 25.00 28.50 31.00
Rated Output (KW) 0.50 4.50 8.50 12.50 16.50 19.00 20.50
Efficiency (%) 0.0 85.5 90.2 91.0 91.0 90.2 89.5
Power Factor (%) 7.0 48.0 70.0 79.5 82.0 84.0 84.5
Speed (RPM) 1,800 1,790 1,785 1,775 1,765 1,760 1,755
Temp. Rise @ FL 0.0 0.0 0.0 0.0 70.0 90.0 105.0
Torque (ft-lbs) 0.00 14.50 29.50 44.50 59.50 68.50 75.00

Marathon Motors
Regal Beloit

Notice:

Due to unprecedented disruptions and delays, lead times are longer than usual and may get worse. We apologize for the inconvenience this imposes on you and we appreciate your patience and understanding during this time.

We are working hard to ensure any problems are minimized for you and we thank your for your business. In the meantime, please feel free to reach out to us for any quotes, questions, or concerns.

 

Sincerely,

The IME Team

Holiday Hours of Operation:

Our warehouses will be closed 12/24/2024-01/01/2025:

Our Sales Office will remain open with limited hours during this time and will continue to process orders – all shipments will resume on 01/02/2025 – feel free to purchase from our shop or contact us for quotes as usual.

*FYI: If you’ve placed an order with us before 12/24/2024, we are currently experiencing delays in manufacturing/shipping and are working hard to provide updates and complete fulfilment as quickly as possible – we thank you for your business and your patience*

Happy Holidays from IMEX!!!