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LM21205 – Leeson 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256T Frame, TEFC – LM21205

LM21205 – Leeson 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256T Frame, TEFC – LM21205

LM21205 Leeson 4:1 Speed Ratio Motors

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

  • Inverter duty insulation system
  • Constant HP range at 2x base speed 56 – 256T frames
  • Constant HP range at 1.5x base speed 284T – 445T frame
  • No mounting available for encoder devices
  • Normally closed thermostats
  • Steel and aluminum frame construction – see notes
  • Precision balanced rotors

Leeson Motors
Regal Beloit

Description

LM21205 – Leeson 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256T Frame, TEFC – LM21205

LM21205 Leeson 4:1 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: 691720308721 Weight: 341 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: 50.0/25.0 A Speed: 1765 rpm
Service Factor: 1 Phase: 3
Efficiency: 91 % Power Factor: 82
Duty: Continuous Insulation Class: F
Design Code: INV KVA Code: F
Frame: 256T Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 309 Opp Drive End Bearing Size: 208
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: .468 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Aluminum
Shaft Type: T Overall Length: 25.15 in
Frame Length: 13.75 in Shaft Diameter: 1.625 in
Shaft Extension: 4 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)
Locked-Rotor 140.00 560.0 108.00 182.0 0 41.5 20.00
Pull-Up 125.00 500.0 94.00 158.0 900 20.00
No Load 9.50 38.0 0.00 0.0 1,800 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
2/3 115.00 460.0 105.00 176.0 1,250 20.00
Break-Down 86.00 344.0 145.00 244.0 1,625 67.0 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 125 % 150 % 200 %
Current (Amps) 9.50 11.50 15.00 19.50 25.00 31.00 0.00 0.00
Rated Output (KW) 0.50 4.50 8.50 12.50 16.50 20.50 0.00 0.00
Efficiency (%) 0.0 85.5 90.2 91.0 91.0 89.5 0.0 0.0
Power Factor (%) 7.0 48.0 70.0 79.5 82.0 84.5 0.0 0.0
Speed (RPM) 1,800 1,790 1,785 1,775 1,765 1,755 0 0
Temp. Rise @ FL 0.0 0.0 0.0 0.0 60.0 0.0 0.0 0.0
Torque (ft-lbs) 0.00 14.50 29.50 44.50 59.50 75.00 0.00 0.00

Leeson 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!!!