Description
254TTFNA16568 – Marathon 15 HP Severe Duty Motor, 3 phase, 1800 RPM, 230/460 V, 254T Frame, TEFC – U871A
254TTFNA16568 Marathon Low Voltage NEMA Cooling Tower Motors
Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.
General Specifications
| UPC: |
722856018830 |
Weight: |
323 LB |
| Packaged Length: |
31.25 IN |
Packaged Width: |
22.25 IN |
| Packaged Height: |
18 IN |
Nameplate Specifications
| Output HP: |
15 Hp |
Output KW: |
11.2 kW |
| Frequency: |
60/50 Hz |
Voltage: |
230/460 V |
| Current: |
37.5/18.8 A |
Speed: |
1775 rpm |
| Service Factor: |
1.15 |
Phase: |
3 |
| Efficiency: |
92.4 % |
Power Factor: |
81 |
| Duty: |
Continuous |
Insulation Class: |
F |
| Design Code: |
B |
KVA Code: |
G |
| Frame: |
254T |
Enclosure: |
Totally Enclosed Fan Cooled |
| Thermal Protection: |
No |
Ambient Temperature: |
40 °C |
| Drive End Bearing Size: |
6309 |
Opp Drive End Bearing Size: |
6210 |
| UL: |
Recognized |
CSA: |
Y |
| CE: |
Y |
IP Code: |
55 |
Technical Specifications
| Electrical Type: |
Squirrel Cage Inverter Rated |
Starting Method: |
Line Or Inverter |
| Poles: |
4 |
Rotation: |
Reversible |
| Resistance Main: |
.649 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: |
23.65 in |
| Frame Length: |
10.50 in |
Shaft Diameter: |
1.625 in |
| Shaft Extension: |
4.2 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) |
| Full Load |
18.80 |
100.0 |
44.40 |
100.0 |
1,775 |
|
|
15.00 |
| 2/3 |
85.00 |
452.0 |
87.00 |
196.0 |
1,200 |
|
|
15.00 |
| Pull-Up |
95.00 |
505.0 |
75.00 |
169.0 |
900 |
|
|
15.00 |
| Break-Down |
69.00 |
367.0 |
125.00 |
282.0 |
1,675 |
|
74.0 |
15.00 |
| Locked-Rotor |
110.00 |
585.0 |
85.00 |
191.0 |
0 |
|
40.0 |
15.00 |
| 1/3 |
105.00 |
559.0 |
71.00 |
160.0 |
600 |
|
|
15.00 |
| No Load |
7.80 |
41.0 |
0.00 |
0.0 |
1,800 |
|
|
15.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
115 % |
125 % |
| Current (Amps) |
7.80 |
8.80 |
11.20 |
14.80 |
18.80 |
21.00 |
23.00 |
| Rated Output (KW) |
0.70 |
3.50 |
6.00 |
9.00 |
12.20 |
14.50 |
15.50 |
| Efficiency (%) |
0.0 |
86.5 |
91.0 |
92.4 |
92.4 |
91.7 |
91.0 |
| Power Factor (%) |
11.5 |
45.0 |
68.0 |
78.0 |
81.0 |
82.0 |
82.5 |
| Speed (RPM) |
1,800 |
1,792 |
1,788 |
1,780 |
1,775 |
1,770 |
1,765 |
| Temp. Rise @ FL |
0.0 |
35.0 |
30.0 |
0.0 |
55.0 |
75.0 |
90.0 |
| Torque (ft-lbs) |
0.00 |
11.00 |
22.00 |
33.50 |
44.40 |
50.50 |
56.00 |
Marathon Motors
Regal Beloit
