Description
256THTNA7026 – Marathon 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TENV – Y552
256THTNA7026 Marathon 1000:1 Speed Ratio Motors
Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.
General Specifications
| UPC: |
722856024879 |
Weight: |
300 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: |
1770 rpm |
| Service Factor: |
1 |
Phase: |
3 |
| Efficiency: |
93.6 % |
Power Factor: |
77 |
| Duty: |
Continuous |
Insulation Class: |
F |
| Design Code: |
INV |
KVA Code: |
N |
| Frame: |
256TC |
Enclosure: |
Totally Enclosed Non Ventilated |
| 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: |
43 |
Technical Specifications
| Electrical Type: |
Squirrel Cage Inverter Duty |
Starting Method: |
Inverter Only |
| Poles: |
4 |
Rotation: |
Reversible |
| Resistance Main: |
.29 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: |
27.13 in |
| Frame Length: |
14.25 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 |
14.50 |
56.0 |
0.00 |
0.0 |
1,800 |
|
|
20.00 |
| Break-Down |
175.00 |
673.0 |
325.00 |
546.0 |
1,550 |
|
75.0 |
20.00 |
| 2/3 |
250.00 |
962.0 |
200.00 |
336.0 |
1,000 |
|
|
20.00 |
| Pull-Up |
275.00 |
1,058.0 |
175.00 |
294.0 |
700 |
|
|
20.00 |
| 1/3 |
290.00 |
1,115.0 |
175.00 |
294.0 |
400 |
|
|
20.00 |
| Full Load |
26.00 |
100.0 |
59.50 |
100.0 |
1,770 |
|
|
20.00 |
| Locked-Rotor |
300.00 |
1,154.0 |
200.00 |
336.0 |
0 |
|
41.0 |
20.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
125 % |
150 % |
200 % |
| Current (Amps) |
14.50 |
15.50 |
18.00 |
21.50 |
26.00 |
31.00 |
36.00 |
46.50 |
| Rated Output (KW) |
0.50 |
4.20 |
8.00 |
12.00 |
16.00 |
20.00 |
24.00 |
32.80 |
| Efficiency (%) |
0.0 |
88.5 |
93.0 |
93.6 |
93.6 |
93.0 |
92.4 |
90.2 |
| Power Factor (%) |
3.5 |
34.0 |
57.0 |
70.0 |
77.0 |
82.0 |
85.0 |
87.0 |
| Speed (RPM) |
1,800 |
1,792 |
1,785 |
1,778 |
1,770 |
1,760 |
1,755 |
1,735 |
| Temp. Rise @ FL |
0.0 |
0.0 |
0.0 |
0.0 |
95.0 |
0.0 |
0.0 |
0.0 |
| Torque (ft-lbs) |
0.00 |
14.60 |
29.50 |
44.50 |
59.50 |
74.50 |
89.70 |
120.00 |
Marathon Motors
Regal Beloit
