These special motors have the high slip and high torque that oil well beam pumping units demand. W22 Design D motors are requested on specifications for most major oil companies around the world as a result of their long lasting performance, low purchase and maintenance cost.
| Standard |
NEMA MG-1 |
| Frequency |
60 Hz |
| Voltage |
208-230/460 V |
| Number of poles |
6 |
| Degree of Protection |
IP55 |
| Synchronous speed |
1200 rpm |
| Output rating |
50 HP |
| Mounting |
F-2 |
| Flange |
Without |
| Terminal box¹ |
Right position |
| Enclosure |
IC411 - TEFC |
Electric Motors
| Frame |
404/5T |
| Output |
50 HP (37 kW) |
| Number of Poles |
6 |
| Frequency |
60 Hz |
| Rated speed |
1135 rpm |
| Slip |
5.42 % |
| Rated voltage |
208-230/460 V |
| Rated current |
140-126/63.2 A |
| L. R. Amperes |
825-746/373 A |
| LRC |
5.9x(Code G) |
| No load current |
55.3-50.0/25.0 A |
| Rated torque |
231 ft.lb |
| Locked rotor torque |
280 % |
| Breakdown torque |
0 % |
| Locked rotor time |
82s (cold) 46s (hot) |
| Moment of inertia (J) |
36.0 sq.ft.lb |
| Design |
D |
| Insulation Class |
F |
| Service factor |
1.15 |
| Temperature rise |
80 K |
| Duty Cycle |
Cont.(S1) |
| Starting Method |
Direct On Line |
| Ambient temperature |
-20°C to +40°C |
| Altitude |
1000 m.a.s.l. |
| Degree of Protection |
IP55 |
| Enclosure |
IC411 - TEFC |
| Mounting |
F-2 |
| Rotation¹ |
Both (CW and CCW) |
| Noise level² |
68.0 dB(A) |
| Approx. weight³ |
1202 lb |
Efficiency
| 50% |
86.5 |
| 75% |
87.5 |
| 100% |
88.5 |
Power factor
| 50% |
0.67 |
| 75% |
0.78 |
| 100% |
0.83 |
Features
| Frame Material |
Cast Iron |
| Impregnation Method |
Constant Resin Flow |
| Regreasing System |
At Drive end and Non-drive end |
| Main terminal box hole |
NPT 3" |
| Terminal Block |
Without |
| Shaft Locking Device |
With |
| Drain |
Rubber, automatic |
| Shaft Material |
SAE 4140 Carbon Steel |
| Painting |
RAL 9010 203A (ISO 12944 - C2) |
| Grounding Lugs |
Double |
| Fan Cover material |
Cast Iron |
| Tropicalized Painting |
Without |
| Fan material |
Aluminum |
| Bearing cap |
Yes- Bearing Cap |
| Drip Cover |
Without |
| Overload protector (phenolic) |
Without overload protector |
| Connection Cables Quantity |
12 |
Features
| Frame Material |
Cast Iron |
| Impregnation Method |
Constant Resin Flow |
| Regreasing System |
At Drive end and Non-drive end |
| Main terminal box hole |
NPT 3" |
| Terminal Block |
Without |
| Shaft Locking Device |
With |
| Drain |
Rubber, automatic |
| Shaft Material |
SAE 4140 Carbon Steel |
| Painting |
RAL 9010 203A (ISO 12944 - C2) |
| Grounding Lugs |
Double |
| Fan Cover material |
Cast Iron |
| Tropicalized Painting |
Without |
| Fan material |
Aluminum |
| Bearing cap |
Yes- Bearing Cap |
| Drip Cover |
Without |
| Overload protector (phenolic) |
Without overload protector |
| Connection Cables Quantity |
12 |
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