Description
256TTFCA6003 – Marathon 20 HP General Purpose Motor, 3 phase, 3600 RPM, 230/460 V, 256TC Frame, TEFC – GT1224
256TTFCA6003 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: |
722856001955 |
Weight: |
364 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: |
60/50 Hz |
Voltage: |
230/460 V |
| Current: |
46.0/23.0 A |
Speed: |
3550 rpm |
| Service Factor: |
1.15 |
Phase: |
3 |
| Efficiency: |
91 % |
Power Factor: |
88 |
| Duty: |
Continuous |
Insulation Class: |
F |
| Design Code: |
B |
KVA Code: |
G |
| Frame: |
256TC |
Enclosure: |
Totally Enclosed Fan Cooled |
| Thermal Protection: |
No |
Ambient Temperature: |
40 °C |
| Drive End Bearing Size: |
6209 |
Opp Drive End Bearing Size: |
6209 |
| UL: |
Recognized |
CSA: |
Y |
| CE: |
Y |
IP Code: |
43 |
Technical Specifications
| Electrical Type: |
Squirrel Cage Induction Run |
Starting Method: |
Across The Line |
| Poles: |
2 |
Rotation: |
Reversible |
| Resistance Main: |
.345 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: |
27.80 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) |
| No Load |
6.70 |
27.0 |
0.00 |
0.0 |
3,600 |
|
10.0 |
20.00 |
| Break-Down |
85.00 |
370.0 |
80.00 |
270.0 |
3,350 |
|
72.0 |
20.00 |
| 1/3 |
135.00 |
586.0 |
42.00 |
140.0 |
1,200 |
|
|
20.00 |
| Full Load |
23.00 |
100.0 |
29.60 |
100.0 |
3,550 |
|
88.0 |
20.00 |
| 2/3 |
120.00 |
522.0 |
45.00 |
152.0 |
2,400 |
|
|
20.00 |
| Pull-Up |
130.00 |
565.0 |
42.00 |
140.0 |
1,800 |
|
|
20.00 |
| Locked-Rotor |
145.00 |
620.0 |
65.00 |
218.0 |
0 |
|
38.0 |
20.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
115 % |
125 % |
| Current (Amps) |
6.80 |
9.20 |
13.00 |
18.00 |
23.00 |
26.50 |
29.00 |
| Rated Output (KW) |
0.75 |
4.50 |
8.50 |
12.40 |
16.40 |
18.80 |
20.50 |
| Efficiency (%) |
0.0 |
86.5 |
90.2 |
91.0 |
91.0 |
91.0 |
91.0 |
| Power Factor (%) |
10.0 |
59.0 |
79.0 |
85.0 |
88.0 |
88.5 |
89.0 |
| Speed (RPM) |
3,600 |
3,588 |
3,575 |
3,565 |
3,550 |
3,542 |
3,535 |
| Temp. Rise @ FL |
0.0 |
0.0 |
0.0 |
0.0 |
50.0 |
70.0 |
85.0 |
| Torque (ft-lbs) |
0.00 |
7.30 |
14.70 |
22.00 |
29.60 |
34.00 |
37.00 |
Marathon Motors
Regal Beloit
