Description
256TTFC6031 – Marathon 20 HP General Purpose Motor, 3 phase, 1800 RPM, 575 V, 256T Frame, TEFC – U653A
256TTFC6031 Marathon Three Phase TEFC Motors
Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.
General Specifications
| UPC: |
722856017659 |
Weight: |
361 LB |
| Packaged Length: |
27 IN |
Packaged Width: |
20.5 IN |
| Packaged Height: |
18 IN |
Nameplate Specifications
| Output HP: |
20 Hp |
Output KW: |
14.9 kW |
| Frequency: |
60 Hz |
Voltage: |
575 V |
| Current: |
20.0 A |
Speed: |
1770 rpm |
| Service Factor: |
1.15 |
Phase: |
3 |
| Efficiency: |
93 % |
Power Factor: |
82 |
| Duty: |
Continuous |
Insulation Class: |
F |
| Design Code: |
B |
KVA Code: |
G |
| Frame: |
256T |
Enclosure: |
Totally Enclosed Fan Cooled |
| Thermal Protection: |
No |
Ambient Temperature: |
40 °C |
| Drive End Bearing Size: |
6309 |
Opp Drive End Bearing Size: |
6308 |
| UL: |
Recognized |
CSA: |
Y |
| CE: |
Y |
IP Code: |
43 |
Technical Specifications
| Electrical Type: |
Squirrel Cage Induction Run |
Starting Method: |
Across The Line |
| Poles: |
4 |
Rotation: |
Reversible |
| Resistance Main: |
.322 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: |
24.92 in |
| Shaft Diameter: |
1.625 in |
Shaft Extension: |
4.25 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) |
| Break-Down |
98.00 |
392.0 |
195.00 |
328.0 |
1,650 |
|
74.0 |
20.00 |
| Full Load |
25.00 |
100.0 |
59.50 |
100.0 |
1,775 |
|
82.0 |
20.00 |
| No Load |
9.40 |
37.5 |
0.00 |
0.0 |
1,800 |
|
5.5 |
20.00 |
| Pull-Up |
135.00 |
|
95.00 |
176.0 |
900 |
|
|
20.00 |
| 1/3 |
140.00 |
|
95.00 |
176.0 |
600 |
|
|
20.00 |
| 2/3 |
125.00 |
|
115.00 |
192.0 |
1,200 |
|
|
20.00 |
| Locked-Rotor |
145.00 |
580.0 |
115.00 |
192.0 |
0 |
|
37.0 |
20.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
115 % |
125 % |
| Current (Amps) |
7.52 |
9.20 |
12.00 |
15.60 |
19.60 |
22.40 |
24.40 |
| Rated Output (KW) |
0.40 |
4.30 |
8.20 |
12.20 |
16.20 |
18.60 |
20.40 |
| Efficiency (%) |
0.0 |
88.5 |
92.4 |
93.0 |
93.0 |
92.4 |
91.7 |
| Power Factor (%) |
5.5 |
47.0 |
68.0 |
77.0 |
82.2 |
82.5 |
83.0 |
| Speed (RPM) |
1,800 |
1,795 |
1,782 |
1,778 |
1,775 |
1,768 |
1,765 |
| Temp. Rise @ FL |
0.0 |
0.0 |
0.0 |
0.0 |
43.0 |
60.0 |
0.0 |
| Torque (ft-lbs) |
0.00 |
15.00 |
30.00 |
45.00 |
59.50 |
70.00 |
75.00 |
Marathon Motors
Regal Beloit
