Description
256TTFCD6031 – Marathon 20 HP Close-Coupled Pump Motor, 3 phase, 1800 RPM, 230/460 V, 256JM Frame, TEFC – GT3125A
256TTFCD6031 Marathon JM Motors
General Specifications
| UPC: |
722856063199 |
Weight: |
360 LB |
| Packaged Length: |
31.77 IN |
Packaged Width: |
28.03 IN |
| Packaged Height: |
28.14 IN |
Nameplate Specifications
| Output HP: |
20 Hp |
Output KW: |
14.9 kW |
| Frequency: |
60 Hz |
Voltage: |
230/460 V |
| Current: |
48.5/24.2 A |
Speed: |
1768 rpm |
| Service Factor: |
1.15 |
Phase: |
3 |
| Efficiency: |
93 % |
Power Factor: |
83.5 |
| Duty: |
Continuous |
Insulation Class: |
F |
| Design Code: |
B |
KVA Code: |
G |
| Frame: |
256JM |
Enclosure: |
Totally Enclosed Fan Cooled |
| Thermal Protection: |
No |
Ambient Temperature: |
40 °C |
| Drive End Bearing Size: |
6309 |
Opp Drive End Bearing Size: |
6209 |
| UL: |
Listed |
CSA: |
Y |
| CE: |
Y |
IP Code: |
43 |
| Hazardous Location: |
DIVISION 2 T2B |
Technical Specifications
| Electrical Type: |
Squirrel Cage Inverter Rated |
Starting Method: |
Line Or Inverter |
| Poles: |
4 |
Rotation: |
Selective Clockwise |
| Resistance Main: |
.513 Ohms |
Mounting: |
Rigid Base |
| Motor Orientation: |
Horizontal |
Drive End Bearing: |
Ball |
| Opp Drive End Bearing: |
Ball |
Frame Material: |
Cast Iron |
| Shaft Type: |
JM |
Overall Length: |
27.89 in |
| Frame Length: |
11.73 in |
Shaft Diameter: |
1.25 in |
| Shaft Extension: |
5.5 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) |
| Break-Down |
81.00 |
335.0 |
146.00 |
246.0 |
1,618 |
|
69.0 |
20.00 |
| Locked-Rotor |
144.00 |
595.0 |
119.00 |
200.0 |
0 |
|
42.0 |
20.00 |
| No Load |
10.00 |
41.0 |
0.00 |
0.0 |
1,800 |
|
5.0 |
20.00 |
| 2/3 |
120.00 |
496.0 |
124.00 |
209.0 |
1,200 |
|
|
20.00 |
| 1/3 |
138.00 |
570.0 |
97.00 |
163.0 |
600 |
|
|
20.00 |
| Pull-Up |
131.00 |
541.0 |
99.00 |
167.0 |
900 |
|
|
20.00 |
| Full Load |
24.20 |
100.0 |
59.40 |
100.0 |
1,768 |
|
83.5 |
20.00 |
Load Characteristics
| % of Rated Load |
0 % |
25 % |
50 % |
75 % |
100 % |
115 % |
125 % |
| Current (Amps) |
10.00 |
11.20 |
14.80 |
19.00 |
24.20 |
27.80 |
30.00 |
| Rated Output (KW) |
0.50 |
4.30 |
8.10 |
12.00 |
16.10 |
18.60 |
20.40 |
| Efficiency (%) |
0.0 |
86.5 |
91.7 |
93.0 |
93.0 |
92.4 |
91.7 |
| Power Factor (%) |
5.0 |
46.5 |
69.0 |
79.0 |
83.5 |
84.5 |
85.0 |
| Speed (RPM) |
1,800 |
1,792 |
1,785 |
1,778 |
1,768 |
1,762 |
1,760 |
| Temp. Rise @ FL |
0.0 |
0.0 |
0.0 |
0.0 |
60.0 |
80.0 |
100.0 |
| Torque (ft-lbs) |
0.00 |
14.60 |
29.50 |
44.40 |
59.40 |
68.50 |
74.70 |
Marathon Motors
Regal Beloit
