LEESON Severe Duty Motor, 1 & 1 HP, 3 Ph, 60 & 50 Hz, 460 & 380 V, 1800 & 1500 RPM, 143T Frame, TEFC - E374
Part #:143TTFN6526
Catalog #:E374
Model #:143TTFN6526AA
KEY FEATURES
- Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
- C-face kit may result in non-NEMA "BA" dim. For new "BA" dim consult chart found in modification section
- 100% cast iron construction for rigidity and reduced vibration
- Provisions to add stub shaft for an encoder (182T-449T, TEFC only)
- C-face addition results in non-NEMA "AH" dim (+1.2" than NEMA)
- IRIS® Class F insulation system
- Constant Torque speed range is listed in CT SPEED RANGE column
- 1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power
- Bearing caps (254T and larger), Precision balanced to .08”/sec
- As of 4/30/24 this product is now listed as LEESON® brand due to <a href="https://investors.regalrexnord.com/investors/ir-news/press-release-details/2024/Regal-Rexnord-Corporation-Closes-The-Sale-Of-Its-Industrial-Motors--Generators-Business-To-WEG/default.aspx">the divestiture of the Industrial Business.</a>
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Product Specifications
Nameplate Specifications
| Phase: | 3 | Output HP: | 1 & 1 Hp |
| Output KW: | 0.75 & 0.75 kW | Voltage: | 460 & 380 V |
| Speed: | 1735 & 1445 rpm | Service Factor: | 1.25 & 1.0 |
| Frame: | 143T | Enclosure: | Totally Enclosed Fan Cooled |
| Thermal Protection: | No Protection | Efficiency: | 85.5 & 84.5 % |
| Ambient Temperature: | 40 °C | Frequency: | 60 & 50 Hz |
| Current: | 1.5 & 1.7 A | Power Factor: | 72 |
| Duty: | Continuous | Insulation Class: | F |
| Design Code: | B | KVA Code: | M |
| Drive End Bearing Size: | 6205 | Opp Drive End Bearing Size: | 6203 |
| UL: | Recognized | CSA: | Y |
| CE: | Y | IP Code: | 54 |
| Number of Speeds: | 1 |
Technical Specifications
| Electrical Type: | Squirrel Cage Inverter Rated | Starting Method: | Line Or Inverter |
| Poles: | 4 | Rotation: | Reversible |
| Resistance Main: | 13.8 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: | 12.92 in |
| Frame Length: | 6.25 in | Shaft Diameter: | 0.875 in |
| Shaft Extension: | 2.56 in | Assembly/Box Mounting: | F1/F2 Capable |
General Specifications
| UPC: | 722856018977 | Weight: | 71.00 LB |
| Packaged Length: | 15.50 IN | Packaged Width: | 14.00 IN |
| Packaged Height: | 9.38 IN | HTC: | 8501.52.4000 |
| Country of Origin: | United States of America |
Speed Characteristics
| Curvepoint | Current (Amps) | Current (%) | Torque (ft-lbs) | Torque (%) | Speed (RPM) | Rated Output (KW) | Power Factor (%) | Rated Output (Hp) |
| No Load | 0.85 | 57.0 | 0.00 | 0.0 | 1,800 | 1.00 | ||
| 1/3 | 12.80 | 853.0 | 9.50 | 317.0 | 600 | 1.00 | ||
| Locked-Rotor | 13.50 | 900.0 | 11.00 | 367.0 | 0 | 67.0 | 1.00 | |
| 2/3 | 11.50 | 767.0 | 11.50 | 383.0 | 1,200 | 1.00 | ||
| Break-Down | 9.00 | 600.0 | 14.00 | 467.0 | 1,600 | 81.5 | 1.00 | |
| Pull-Up | 12.10 | 807.0 | 9.90 | 330.0 | 900 | 1.00 | ||
| Full Load | 1.50 | 100.0 | 3.00 | 100.0 | 1,735 | 1.00 |
Load Characteristics
| % of Rated Load | 0 % | 25 % | 50 % | 75 % | 100 % | 115 % | 125 % |
| Current (Amps) | 0.85 | 0.90 | 1.00 | 1.20 | 1.50 | 1.60 | 1.70 |
| Rated Output (KW) | 0.07 | 0.25 | 0.45 | 0.65 | 0.87 | 1.00 | 1.10 |
| Efficiency (%) | 0.0 | 75.5 | 84.0 | 85.5 | 85.5 | 85.5 | 84.0 |
| Power Factor (%) | 10.0 | 33.5 | 53.5 | 67.0 | 72.0 | 79.0 | 80.5 |
| Speed (RPM) | 1,800 | 1,785 | 1,770 | 1,755 | 1,735 | 1,730 | 1,725 |
| Temp. Rise @ FL | 0.0 | 0.0 | 0.0 | 0.0 | 21.0 | 0.0 | 0.0 |
| Torque (ft-lbs) | 0.00 | 0.74 | 1.50 | 2.20 | 3.00 | 3.50 | 3.80 |