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256THFNA8038 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – Y598

256THFNA8038 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – Y598

256THFNA8038 Marathon 2000:1 With Encoder Provision Motors

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

  • MAX GUARD® Class H insulation system
  • Constant torque operation from 0 to base speed on vector drive, including TEFC (On Volts/Hertz drives, TEFC motors are limited to 20:1 constant torque
  • Constant HP operation to twice base speed (143-256 frame);1.5 times base (all others)
  • Optimized for operation with IGBT inverter (NEMA Design A)
  • Normally closed thermostats (one per phase, class F)
  • Blue Chip quality, cast iron frame and brackets
  • Patented “fracket” design (TEBC enclosure)

Marathon Motors
Regal Beloit

Original price was: $6,817.00.Current price is: $3,960.94.

Description

256THFNA8038 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – Y598

256THFNA8038 Marathon 2000:1 With Encoder Provision Motors

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

General Specifications

UPC: 722856025395 Weight: 377 LB
Packaged Length: 31.25 IN Packaged Width: 22.25 IN
Packaged Height: 18 IN

Nameplate Specifications

Output HP: 20 Hp Output KW: 14.9 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 52.0/26.0 A Speed: 1775 rpm
Service Factor: 1 Phase: 3
Efficiency: 91 % Power Factor: 78
Duty: Continuous Insulation Class: H
Design Code: INV KVA Code: J
Frame: 256TC Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: Thermostats (N/C) Ambient Temperature: 40 °C
Drive End Bearing Size: 6309 Opp Drive End Bearing Size: 6210
UL: Recognized CSA: Y
CE: Y IP Code: 43

Technical Specifications

Electrical Type: Squirrel Cage Inverter Duty Starting Method: Inverter Only
Poles: 4 Rotation: Reversible
Resistance Main: .325 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: 28.09 in
Frame Length: 12.25 in Shaft Diameter: 1.625 in
Shaft Extension: 3.75 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)
No Load 14.00 54.0 0.00 0.0 1,800 20.00
Pull-Up 165.00 635.0 140.00 236.0 900 20.00
2/3 155.00 596.0 155.00 262.0 1,200 20.00
Full Load 26.00 100.0 59.00 100.0 1,775 20.00
Locked-Rotor 182.00 700.0 147.00 248.0 0 39.5 20.00
Break-Down 115.00 442.0 195.00 329.0 1,625 66.0 20.00
1/3 175.00 673.0 130.00 220.0 600 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 125 % 150 % 200 %
Current (Amps) 14.00 15.00 18.00 22.00 26.00 31.50 37.50 0.00
Rated Output (KW) 1.00 4.50 8.50 12.50 16.50 20.50 24.50 0.00
Efficiency (%) 0.0 80.0 88.5 90.2 91.0 91.0 91.0 0.0
Power Factor (%) 6.0 38.0 58.0 72.0 78.0 82.0 82.5 0.0
Speed (RPM) 1,800 1,795 1,788 1,782 1,775 1,765 1,760 0
Temp. Rise @ FL 0.0 0.0 0.0 0.0 55.0 0.0 0.0 0.0
Torque (ft-lbs) 0.00 14.80 29.50 44.50 59.20 74.50 90.00 0.00

Marathon Motors
Regal Beloit