Description
449TTFS36649 – Marathon 250 HP Severe Duty Motor, 3 phase, 1800 RPM, 460 V, 449T Frame, TEFC – U884A
449TTFS36649 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: |
722856054975 |
Weight: |
0 LB |
| Packaged Length: |
56 IN |
Packaged Width: |
46 IN |
| Packaged Height: |
27.61 IN |
Nameplate Specifications
| Output HP: |
250 Hp |
Output KW: |
187.0 kW |
| Frequency: |
60/50 Hz |
Voltage: |
460 V |
| Current: |
285.0 A |
Speed: |
1785 rpm |
| Service Factor: |
1.15 |
Phase: |
3 |
| Efficiency: |
96.5 % |
Power Factor: |
86 |
| Duty: |
Continuous |
Insulation Class: |
F |
| Design Code: |
B |
KVA Code: |
G |
| Frame: |
447/449T |
Enclosure: |
Totally Enclosed Fan Cooled |
| Thermal Protection: |
No |
Ambient Temperature: |
40 °C |
| Drive End Bearing Size: |
6319 |
Opp Drive End Bearing Size: |
6318 |
| UL: |
Recognized |
CSA: |
Y |
| CE: |
Y |
IP Code: |
55 |
Technical Specifications
| Electrical Type: |
Squirrel Cage Induction Run |
Starting Method: |
Across The Line |
| Poles: |
4 |
Rotation: |
Reversible |
| Resistance Main: |
.0107 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: |
51.84 in |
| Frame Length: |
28.77 in |
Shaft Diameter: |
3.375 in |
| Shaft Extension: |
8.81 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) |
| Locked-Rotor |
1,825.00 |
640.0 |
1,450.00 |
197.0 |
0 |
|
31.0 |
250.00 |
| 2/3 |
1,650.00 |
579.0 |
1,450.00 |
197.0 |
1,200 |
|
|
250.00 |
| Pull-Up |
1,725.00 |
605.0 |
1,250.00 |
170.0 |
900 |
|
|
250.00 |
| No Load |
87.00 |
31.0 |
0.00 |
0.0 |
1,800 |
|
|
250.00 |
| 1/3 |
1,775.00 |
623.0 |
1,200.00 |
163.0 |
600 |
|
|
250.00 |
| Break-Down |
1,100.00 |
386.0 |
1,825.00 |
248.0 |
1,725 |
|
60.0 |
250.00 |
| Full Load |
285.00 |
100.0 |
736.00 |
100.0 |
1,785 |
|
|
250.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
115 % |
125 % |
| Current (Amps) |
87.00 |
110.00 |
158.00 |
217.00 |
285.00 |
322.00 |
352.00 |
| Rated Output (KW) |
3.50 |
50.00 |
97.50 |
145.00 |
193.00 |
223.00 |
242.00 |
| Efficiency (%) |
0.0 |
93.0 |
95.8 |
96.5 |
96.5 |
96.5 |
96.2 |
| Power Factor (%) |
4.5 |
57.0 |
77.0 |
83.5 |
86.0 |
86.5 |
86.5 |
| Speed (RPM) |
1,800 |
1,796 |
1,794 |
1,790 |
1,785 |
1,782 |
1,780 |
| Temp. Rise @ FL |
0.0 |
40.0 |
30.0 |
0.0 |
65.0 |
85.0 |
105.0 |
| Torque (ft-lbs) |
0.00 |
183.00 |
366.00 |
550.00 |
736.00 |
846.00 |
920.00 |
Marathon Motors
Regal Beloit
