Description
256TTTNA18578 – Marathon 10 HP Definite Purpose AC Motor, 3 phase, 1200 RPM, 460 V, 256T Frame, TEAO – S516
256TTTNA18578 Marathon Other Purpose Motors
Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.
General Specifications
| UPC: |
722856042897 |
Weight: |
351 LB |
| Packaged Length: |
31.25 IN |
Packaged Width: |
22.25 IN |
| Packaged Height: |
18 IN |
Nameplate Specifications
| Output HP: |
10 Hp |
Output KW: |
7.5 kW |
| Frequency: |
60 Hz |
Voltage: |
460 V |
| Current: |
12.8 A |
Speed: |
1172 rpm |
| Service Factor: |
1.15 |
Phase: |
3 |
| Efficiency: |
91 % |
Power Factor: |
80 |
| Duty: |
Continuous |
Insulation Class: |
H |
| Design Code: |
B |
KVA Code: |
H |
| Frame: |
256T |
Enclosure: |
Totally Enclosed Air Over |
| Thermal Protection: |
No |
Ambient Temperature: |
90 °C |
| Drive End Bearing Size: |
6309 |
Opp Drive End Bearing Size: |
6210 |
| UL: |
No |
CSA: |
Y |
| CE: |
N |
IP Code: |
54 |
Technical Specifications
| Electrical Type: |
Squirrel Cage Inverter Rated |
Starting Method: |
Line Or Inverter |
| Poles: |
6 |
Rotation: |
Reversible |
| Resistance Main: |
1.025 Ohms |
Mounting: |
Rigid Base |
| Motor Orientation: |
Horizontal |
Drive End Bearing: |
Ball / Heat Stabilized |
| Opp Drive End Bearing: |
Ball / Heat Stabilized |
Frame Material: |
Cast Iron |
| Shaft Type: |
T |
Overall Length: |
22.35 in |
| Frame Length: |
12.25 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) |
| 1/3 |
80.00 |
625.0 |
85.00 |
190.0 |
250 |
|
|
10.00 |
| 2/3 |
75.00 |
586.0 |
90.00 |
201.0 |
750 |
|
|
10.00 |
| Full Load |
12.80 |
100.0 |
44.83 |
100.0 |
1,172 |
|
|
10.00 |
| Pull-Up |
78.00 |
609.0 |
85.00 |
190.0 |
400 |
|
|
10.00 |
| Locked-Rotor |
81.00 |
633.0 |
95.00 |
212.0 |
0 |
|
46.0 |
10.00 |
| Break-Down |
48.00 |
375.0 |
120.00 |
268.0 |
1,050 |
|
69.0 |
10.00 |
| No Load |
5.80 |
45.0 |
0.00 |
0.0 |
1,200 |
|
|
10.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
115 % |
125 % |
| Current (Amps) |
5.80 |
6.50 |
8.20 |
10.20 |
12.80 |
14.50 |
15.80 |
| Rated Output (KW) |
0.40 |
2.20 |
4.20 |
6.20 |
8.20 |
9.50 |
10.50 |
| Efficiency (%) |
0.0 |
85.5 |
90.2 |
91.0 |
91.0 |
90.2 |
89.5 |
| Power Factor (%) |
5.5 |
42.0 |
64.0 |
75.0 |
80.0 |
82.0 |
82.5 |
| Speed (RPM) |
1,200 |
1,192 |
1,188 |
1,180 |
1,172 |
1,168 |
1,162 |
| Temp. Rise @ FL |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
| Torque (ft-lbs) |
0.00 |
11.00 |
22.00 |
33.50 |
44.80 |
52.00 |
56.50 |
Marathon Motors
Regal Beloit
