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256THTNA7026 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TENV – Y552

256THTNA7026 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TENV – Y552

256THTNA7026 Marathon 1000:1 Speed Ratio Motors

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

  • MAX GUARD® Class F insulation system
  • Constant Torque operation from 0 to base speed on Vector Drive
  • Constant Horsepower operation up to twice base RPM
  • Optimized for operation with IGBT inverter (NEMA Design A)
  • Normally closed thermostats (one per phase, Class F)
  • Encoder and brake provisions included on opposite drive end (maximum 10 lb-ft brake,see Modifications and/or Accessory Kits sections)

Marathon Motors
Regal Beloit

Original price was: $9,299.00.Current price is: $5,403.09.

Description

256THTNA7026 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TENV – Y552

256THTNA7026 Marathon 1000:1 Speed Ratio Motors

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

General Specifications

UPC: 722856024879 Weight: 300 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: 1770 rpm
Service Factor: 1 Phase: 3
Efficiency: 93.6 % Power Factor: 77
Duty: Continuous Insulation Class: F
Design Code: INV KVA Code: N
Frame: 256TC Enclosure: Totally Enclosed Non Ventilated
Thermal Protection: No 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: .29 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: 27.13 in
Frame Length: 14.25 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 14.50 56.0 0.00 0.0 1,800 20.00
Break-Down 175.00 673.0 325.00 546.0 1,550 75.0 20.00
2/3 250.00 962.0 200.00 336.0 1,000 20.00
Pull-Up 275.00 1,058.0 175.00 294.0 700 20.00
1/3 290.00 1,115.0 175.00 294.0 400 20.00
Full Load 26.00 100.0 59.50 100.0 1,770 20.00
Locked-Rotor 300.00 1,154.0 200.00 336.0 0 41.0 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 125 % 150 % 200 %
Current (Amps) 14.50 15.50 18.00 21.50 26.00 31.00 36.00 46.50
Rated Output (KW) 0.50 4.20 8.00 12.00 16.00 20.00 24.00 32.80
Efficiency (%) 0.0 88.5 93.0 93.6 93.6 93.0 92.4 90.2
Power Factor (%) 3.5 34.0 57.0 70.0 77.0 82.0 85.0 87.0
Speed (RPM) 1,800 1,792 1,785 1,778 1,770 1,760 1,755 1,735
Temp. Rise @ FL 0.0 0.0 0.0 0.0 95.0 0.0 0.0 0.0
Torque (ft-lbs) 0.00 14.60 29.50 44.50 59.50 74.50 89.70 120.00

Marathon Motors
Regal Beloit

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