Description
256THFNA8038 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – Y598
256THFNA8038 Marathon 2000:1 With Encoder Provision Motors
Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.
General Specifications
| UPC: |
722856025395 |
Weight: |
377 LB |
| Packaged Length: |
31.25 IN |
Packaged Width: |
22.25 IN |
| Packaged Height: |
18 IN |
Nameplate Specifications
| Output HP: |
20 Hp |
Output KW: |
14.9 kW |
| Frequency: |
60 Hz |
Voltage: |
230/460 V |
| Current: |
52.0/26.0 A |
Speed: |
1775 rpm |
| Service Factor: |
1 |
Phase: |
3 |
| Efficiency: |
91 % |
Power Factor: |
78 |
| Duty: |
Continuous |
Insulation Class: |
H |
| Design Code: |
INV |
KVA Code: |
J |
| Frame: |
256TC |
Enclosure: |
Totally Enclosed Fan Cooled |
| Thermal Protection: |
Thermostats (N/C) |
Ambient Temperature: |
40 °C |
| Drive End Bearing Size: |
6309 |
Opp Drive End Bearing Size: |
6210 |
| UL: |
Recognized |
CSA: |
Y |
| CE: |
Y |
IP Code: |
43 |
Technical Specifications
| Electrical Type: |
Squirrel Cage Inverter Duty |
Starting Method: |
Inverter Only |
| Poles: |
4 |
Rotation: |
Reversible |
| Resistance Main: |
.325 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: |
28.09 in |
| Frame Length: |
12.25 in |
Shaft Diameter: |
1.625 in |
| Shaft Extension: |
3.75 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 |
14.00 |
54.0 |
0.00 |
0.0 |
1,800 |
|
|
20.00 |
| Pull-Up |
165.00 |
635.0 |
140.00 |
236.0 |
900 |
|
|
20.00 |
| 2/3 |
155.00 |
596.0 |
155.00 |
262.0 |
1,200 |
|
|
20.00 |
| Full Load |
26.00 |
100.0 |
59.00 |
100.0 |
1,775 |
|
|
20.00 |
| Locked-Rotor |
182.00 |
700.0 |
147.00 |
248.0 |
0 |
|
39.5 |
20.00 |
| Break-Down |
115.00 |
442.0 |
195.00 |
329.0 |
1,625 |
|
66.0 |
20.00 |
| 1/3 |
175.00 |
673.0 |
130.00 |
220.0 |
600 |
|
|
20.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
125 % |
150 % |
200 % |
| Current (Amps) |
14.00 |
15.00 |
18.00 |
22.00 |
26.00 |
31.50 |
37.50 |
0.00 |
| Rated Output (KW) |
1.00 |
4.50 |
8.50 |
12.50 |
16.50 |
20.50 |
24.50 |
0.00 |
| Efficiency (%) |
0.0 |
80.0 |
88.5 |
90.2 |
91.0 |
91.0 |
91.0 |
0.0 |
| Power Factor (%) |
6.0 |
38.0 |
58.0 |
72.0 |
78.0 |
82.0 |
82.5 |
0.0 |
| Speed (RPM) |
1,800 |
1,795 |
1,788 |
1,782 |
1,775 |
1,765 |
1,760 |
0 |
| Temp. Rise @ FL |
0.0 |
0.0 |
0.0 |
0.0 |
55.0 |
0.0 |
0.0 |
0.0 |
| Torque (ft-lbs) |
0.00 |
14.80 |
29.50 |
44.50 |
59.20 |
74.50 |
90.00 |
0.00 |
Marathon Motors
Regal Beloit
