Encoder Motor, 20 HP, 3 Ph, 60 Hz, 230/460 V, 1800 RPM, 256TC Frame, TEFC
Encoder Motor, 20 HP, 3 Ph, 60 Hz, 230/460 V, 1800 RPM, 256TC Frame, TEFC
Part#: 256THFNA8038
Catalog#: Y598
Model#: 256THFNA8038BC
Weight: 377 lb
Key Features
- 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)
Specifications
| Phase | Phase: 3 | Output HP | Output HP: 20 Hp |
| Output KW | Output KW: 14.9 kW | Voltage | Voltage: 230/460 V |
| Speed | Speed: 1775 rpm | Service Factor | Service Factor: 1 |
| Frame | Frame: 256TC | Enclosure | Enclosure: Totally Enclosed Fan Cooled |
| Thermal Protection | Thermal Protection: Thermostat | Efficiency | Efficiency: 91 % |
| Ambient Temperature | Ambient Temperature: 40 °C | Frequency | Frequency: 60 Hz |
| Current | Current: 52.0/26.0 A | Power Factor | Power Factor: 78 |
| Duty | Duty: Continuous | Insulation Class | Insulation Class: H |
| Design Code | Design Code: INV | KVA Code | KVA Code: J |
| 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: 43 |
| Number of Speeds | Number of Speeds: 1 |
| Electrical Type | Electrical Type: Squirrel Cage Inverter Duty | Starting Method | Starting Method: Inverter Only |
| Poles | Poles: 4 | Rotation | Rotation: Reversible |
| Resistance Main | Resistance Main: .325 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: 28.09 in |
| Frame Length | Frame Length: 12.25 in | Shaft Diameter | Shaft Diameter: 1.625 in |
| Shaft Extension | Shaft Extension: 3.75 in | Assembly/Box Mounting | Assembly/Box Mounting: F1/F2 CAPABLE |
| Inverter Load | Inverter Load: CONSTANT 2000:1 |
| Service Factor | Service Factor: 1 | Frame Suffix | Frame Suffix: TC |
| Current | Current: 52.0/26.0 A | Synchronous RPM | Synchronous RPM: 1800 rpm |
| Frequency | Frequency: 60 Hz | Speed | Speed: 1775 rpm |
| Connection Drawing | Connection Drawing: A-EE7308T | Outline Drawing | Outline Drawing: B-SS203502-1225 |
| Voltage | Voltage: 230/460 V | Output KW | Output KW: 14.9 kW |
| Output HP | Output HP: 20 Hp | Frame Size | Frame Size: 256 |
| Torque UOM | Torque UOM: LB-FT | Efficiency | Efficiency: 91 % |
| Packaged Length | Packaged Length: 31.25 IN | Weight | Weight: 377.00 LB |
| UPC | UPC: 722856025395 | Packaged Width | Packaged Width: 22.25 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% | 125% | 150% | 200% |
|---|---|---|---|---|---|---|---|---|
| % of Rated Load: Current (Amps) | 0%: 14.00 | 25%: 15.00 | 50%: 18.00 | 75%: 22.00 | 100%: 26.00 | 125%: 31.50 | 150%: 37.50 | 200%: 0.00 |
| % of Rated Load: Rated Output (KW) | 0%: 1.00 | 25%: 4.50 | 50%: 8.50 | 75%: 12.50 | 100%: 16.50 | 125%: 20.50 | 150%: 24.50 | 200%: 0.00 |
| % of Rated Load: Efficiency (%) | 0%: 0.0 | 25%: 80.0 | 50%: 88.5 | 75%: 90.2 | 100%: 91.0 | 125%: 91.0 | 150%: 91.0 | 200%: 0.0 |
| % of Rated Load: Power Factor (%) | 0%: 6.0 | 25%: 38.0 | 50%: 58.0 | 75%: 72.0 | 100%: 78.0 | 125%: 82.0 | 150%: 82.5 | 200%: 0.0 |
| % of Rated Load: Speed (RPM) | 0%: 1,800 | 25%: 1,795 | 50%: 1,788 | 75%: 1,782 | 100%: 1,775 | 125%: 1,765 | 150%: 1,760 | 200%: 0 |
| % of Rated Load: Temp. Rise @ FL | 0%: 0.0 | 25%: 0.0 | 50%: 0.0 | 75%: 0.0 | 100%: 55.0 | 125%: 0.0 | 150%: 0.0 | 200%: 0.0 |
| % of Rated Load: Torque (ft-lbs) | 0%: 0.00 | 25%: 14.80 | 50%: 29.50 | 75%: 44.50 | 100%: 59.20 | 125%: 74.50 | 150%: 90.00 | 200%: 0.00 |
| % of Rated Load: | 0%: | 25%: | 50%: | 75%: | 100%: | 125%: | 150%: | 200%: |
| Curvepoint | Current (Amps) | Current (%) | Torque (ft-lbs) | Torque (%) | Speed (RPM) | Rated Output (KW) | Power Factor (%) | Rated Output (Hp) |
|---|---|---|---|---|---|---|---|---|
| Curvepoint: 1/3 | Current (Amps): 175.00 | Current (%): 673.0 | Torque (ft-lbs): 130.00 | Torque (%): 220.0 | Speed (RPM): 600 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 20.00 |
| Curvepoint: Full Load | Current (Amps): 26.00 | Current (%): 100.0 | Torque (ft-lbs): 59.00 | Torque (%): 100.0 | Speed (RPM): 1,775 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 20.00 |
| Curvepoint: 2/3 | Current (Amps): 155.00 | Current (%): 596.0 | Torque (ft-lbs): 155.00 | Torque (%): 262.0 | Speed (RPM): 1,200 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 20.00 |
| Curvepoint: Break-Down | Current (Amps): 115.00 | Current (%): 442.0 | Torque (ft-lbs): 195.00 | Torque (%): 329.0 | Speed (RPM): 1,625 | Rated Output (KW): | Power Factor (%): 66.0 | Rated Output (Hp): 20.00 |
| Curvepoint: Locked-Rotor | Current (Amps): 182.00 | Current (%): 700.0 | Torque (ft-lbs): 147.00 | Torque (%): 248.0 | Speed (RPM): 0 | Rated Output (KW): | Power Factor (%): 39.5 | Rated Output (Hp): 20.00 |
| Curvepoint: Pull-Up | Current (Amps): 165.00 | Current (%): 635.0 | Torque (ft-lbs): 140.00 | Torque (%): 236.0 | Speed (RPM): 900 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 20.00 |
| Curvepoint: No Load | Current (Amps): 14.00 | Current (%): 54.0 | Torque (ft-lbs): 0.00 | Torque (%): 0.0 | Speed (RPM): 1,800 | Rated Output (KW): | Power Factor (%): | Rated Output (Hp): 20.00 |
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: cancel |
| Country: South Korea | Complies with standards: check_circle |
