Severe Duty Motor, 7.50 HP, 3 Ph, 60 Hz, 460 V, 900 RPM, 256T Frame, TEFC
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Severe Duty Motor, 7.50 HP, 3 Ph, 60 Hz, 460 V, 900 RPM, 256T Frame, TEFC
Part#: 256THFNA9101
Catalog#: W536
Model#: 256THFNA9101AC
Weight: 340 lb
Key Features
- Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
- Meets IEEE-841 standard for severe duty applications
- C-face addition may result in non-NEMA "BA" dim. For new "BA" dim consult chart found in modification section
- Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
- Inpro/Seal® VBX® bearing isolators on drive end shaft extension TENV and on both ends of TEFC
- Provisions to add stub shaft for an encoder (182T-449T, TEFC only)
- Internal and external epoxy finish
- MAX GUARD® Class F insulation system
- Constant Torque speed range is listed in CT SPEED RANGE column
Specifications
| Phase | Phase: 3 | Output HP | Output HP: 7.50 Hp |
| Output KW | Output KW: 5.6 kW | Voltage | Voltage: 460 V |
| Speed | Speed: 875 rpm | Service Factor | Service Factor: 1.15 |
| Frame | Frame: 256T | Enclosure | Enclosure: Totally Enclosed Fan Cooled |
| Thermal Protection | Thermal Protection: No Protection | Efficiency | Efficiency: 88.5 % |
| Ambient Temperature | Ambient Temperature: 40 °C | Frequency | Frequency: 60 Hz |
| Current | Current: 11 A | Power Factor | Power Factor: 73 |
| Duty | Duty: Continuous | Insulation Class | Insulation Class: F |
| Design Code | Design Code: B | KVA Code | KVA Code: F |
| Drive End Bearing Size | Drive End Bearing Size: 6309 | Opp Drive End Bearing Size | Opp Drive End Bearing Size: 6210 |
| UL | UL: Recognized | CSA | CSA: Y |
| CE | CE: Y | IP Code | IP Code: 56 |
| Number of Speeds | Number of Speeds: 1 |
| Electrical Type | Electrical Type: Squirrel Cage Inverter Rated | Starting Method | Starting Method: Line Or Inverter |
| Poles | Poles: 8 | Rotation | Rotation: Reversible |
| Resistance Main | Resistance Main: 1.37 Ohms | Mounting | Mounting: Rigid Base |
| Motor Orientation | Motor Orientation: Horizontal | Drive End Bearing | Drive End Bearing: Ball |
| Opp Drive End Bearing | Opp Drive End Bearing: Ball | Frame Material | Frame Material: Cast Iron |
| Shaft Type | Shaft Type: T | Overall Length | Overall Length: 25.40 in |
| Frame Length | Frame Length: 12.25 in | Shaft Diameter | Shaft Diameter: 1.625 in |
| Shaft Extension | Shaft Extension: 4.2 in | Assembly/Box Mounting | Assembly/Box Mounting: F1/F2 Capable |
| Inverter Load | Inverter Load: CONSTANT 20:1 |
| Service Factor | Service Factor: 1.15 | Frame Suffix | Frame Suffix: T |
| Current | Current: 11 A | Synchronous RPM | Synchronous RPM: 900 rpm |
| Frequency | Frequency: 60 Hz | Speed | Speed: 875 rpm |
| Connection Drawing | Connection Drawing: A-EE7300 | Outline Drawing | Outline Drawing: B-SS203002-1225 |
| Voltage | Voltage: 460 V | Output KW | Output KW: 5.6 kW |
| Output HP | Output HP: 7.50 Hp | Frame Size | Frame Size: 256 |
| Torque UOM | Torque UOM: LB-FT | Efficiency | Efficiency: 88.5 % |
| Packaged Length | Packaged Length: 30.75 IN | Weight | Weight: 340.00 LB |
| UPC | UPC: 722856021113 | Packaged Width | Packaged Width: 21.75 IN |
| HTC | HTC: 8501.52.4000 | Country of Origin | Country of Origin: United States of America |
| Packaged Height | Packaged Height: 18.00 IN |
| % of Rated Load | 0% | 25% | 50% | 75% | 100% | 115% | 125% |
|---|---|---|---|---|---|---|---|
| % of Rated Load: Current (Amps) | 0%: 6.50 | 25%: 7.00 | 50%: 8.00 | 75%: 9.50 | 100%: 11.00 | 115%: 12.50 | 125%: 13.50 |
| % of Rated Load: Rated Output (KW) | 0%: 0.50 | 25%: 1.50 | 50%: 3.00 | 75%: 4.50 | 100%: 6.50 | 115%: 7.50 | 125%: 8.00 |
| % of Rated Load: Efficiency (%) | 0%: 0.0 | 25%: 80.0 | 50%: 86.5 | 75%: 88.5 | 100%: 88.5 | 115%: 87.5 | 125%: 87.5 |
| % of Rated Load: Power Factor (%) | 0%: 6.0 | 25%: 31.5 | 50%: 50.5 | 75%: 63.0 | 100%: 73.0 | 115%: 73.0 | 125%: 74.0 |
| % of Rated Load: Speed (RPM) | 0%: 900 | 25%: 895 | 50%: 890 | 75%: 880 | 100%: 875 | 115%: 870 | 125%: 865 |
| % of Rated Load: Temp. Rise @ FL | 0%: 0.0 | 25%: 0.0 | 50%: 0.0 | 75%: 0.0 | 100%: 45.0 | 115%: 60.0 | 125%: 75.0 |
| % of Rated Load: Torque (ft-lbs) | 0%: 0.00 | 25%: 11.00 | 50%: 22.00 | 75%: 33.50 | 100%: 45.00 | 115%: 52.00 | 125%: 57.00 |
| Curvepoint | Current (Amps) | Current (%) | Torque (ft-lbs) | Torque (%) | Speed (RPM) | Rated Output (KW) | Power Factor (%) | Rated Output (Hp) |
|---|---|---|---|---|---|---|---|---|
| Curvepoint: Pull-Up | Current (Amps): 50.00 | Current (%): 455.0 | Torque (ft-lbs): 72.00 | Torque (%): 160.0 | Speed (RPM): 450 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 7.50 |
| Curvepoint: Break-Down | Current (Amps): 35.00 | Current (%): 318.0 | Torque (ft-lbs): 110.00 | Torque (%): 244.0 | Speed (RPM): 780 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 7.50 |
| Curvepoint: 2/3 | Current (Amps): 48.00 | Current (%): 436.0 | Torque (ft-lbs): 85.00 | Torque (%): 189.0 | Speed (RPM): 600 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 7.50 |
| Curvepoint: No Load | Current (Amps): 6.50 | Current (%): 59.0 | Torque (ft-lbs): 0.00 | Torque (%): 0.0 | Speed (RPM): 900 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 7.50 |
| Curvepoint: 1/3 | Current (Amps): 52.00 | Current (%): 473.0 | Torque (ft-lbs): 68.00 | Torque (%): 151.0 | Speed (RPM): 300 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 7.50 |
| Curvepoint: Full Load | Current (Amps): 11.00 | Current (%): 100.0 | Torque (ft-lbs): 45.00 | Torque (%): 100.0 | Speed (RPM): 875 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 7.50 |
| Curvepoint: Locked-Rotor | Current (Amps): 53.00 | Current (%): 482.0 | Torque (ft-lbs): 75.00 | Torque (%): 167.0 | Speed (RPM): 0 | Rated Output (KW): | Power Factor (%): 37.0 | Rated Output (Hp): 7.50 |
Efficiency
| Country | Complies with standards |
|---|---|
| Country: United States | Complies with standards: check_circle |
| Country: Canada | Complies with standards: check_circle |
| Country: Mexico | Complies with standards: check_circle |
| Country: Australia | Complies with standards: check_circle |
| Country: Brazil | Complies with standards: check_circle |
| Country: Chile | Complies with standards: check_circle |
| Country: China | Complies with standards: check_circle |
| Country: Europe | Complies with standards: check_circle |
| Country: Japan | Complies with standards: check_circle |
| Country: New Zealand | Complies with standards: check_circle |
| Country: Saudi Arabia | Complies with standards: check_circle |
| Country: South Korea | Complies with standards: check_circle |