The W22 IEEE 841 motors were especially designed to operate in petrochemical and chemical industries. The motor has cast iron frame, flexible mounting, solid and whole feet, low noise levels, anticorrosive internal coating and high efficiency.
| Standard |
NEMA MG-1 |
| Frequency |
60 Hz |
| Voltage |
575 V |
| Number of poles |
4 |
| Degree of Protection |
IP55 |
| Synchronous speed |
1800 rpm |
| Output rating |
350 HP |
| Mounting |
F-1 |
| Flange |
Without |
| Terminal box¹ |
Left position |
| Enclosure |
IC411 - TEFC |
Electric Motors
| Frame |
L447/9T |
| Output |
350 HP (260 kW) |
| Number of Poles |
4 |
| Frequency |
60 Hz |
| Rated speed |
1787 rpm |
| Slip |
0.72 % |
| Rated voltage |
575 V |
| Rated current |
315 A |
| L. R. Amperes |
2175 A |
| LRC |
6.9x(Code G) |
| No load current |
92.0 A |
| Rated torque |
1030 ft.lb |
| Locked rotor torque |
260 % |
| Breakdown torque |
229 % |
| Locked rotor time |
81s (cold) 45s (hot) |
| Moment of inertia (J) |
131 sq.ft.lb |
| Design |
B |
| 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-1 |
| Rotation¹ |
Both (CW and CCW) |
| Noise level² |
77.0 dB(A) |
| Approx. weight³ |
3192 lb |
Efficiency
| 50% |
95.8 |
| 75% |
96.2 |
| 100% |
96.2 |
Power factor
| 50% |
0.76 |
| 75% |
0.83 |
| 100% |
0.86 |
Features
| Frame Material |
Cast Iron |
| Impregnation Method |
Constant Resin Flow |
| Regreasing System |
Extended in Stainless Steel, at Drive end and Non-drive end |
| Main terminal box hole |
2xNPT 3" |
| Terminal Block |
Without |
| Shaft Locking Device |
Without |
| Drain |
Type T, Threaded |
| Shaft Material |
SAE 4140 Carbon Steel |
| Painting |
RAL 5009 202E (ISO 12944 - C4) |
| Grounding Lugs |
Double |
| Fan Cover material |
Cast Iron |
| Tropicalized Painting |
According to IEEE-841 (96h) |
| Joints Seal |
Molykote |
| Foot flatness |
(0.005 pol) 0.127 mm |
| Fan material |
Bronze |
| Bearing cap |
Yes- Bearing Cap |
| Bolt Material |
Carbon Steel |
| Balancing Method |
1/2 Key |
| Drip Cover |
Without |
| Overload protector (phenolic) |
Without overload protector |
| Connection Cables Quantity |
3 |
Features
| Frame Material |
Cast Iron |
| Impregnation Method |
Constant Resin Flow |
| Regreasing System |
Extended in Stainless Steel, at Drive end and Non-drive end |
| Main terminal box hole |
2xNPT 3" |
| Terminal Block |
Without |
| Shaft Locking Device |
Without |
| Drain |
Type T, Threaded |
| Shaft Material |
SAE 4140 Carbon Steel |
| Painting |
RAL 5009 202E (ISO 12944 - C4) |
| Grounding Lugs |
Double |
| Fan Cover material |
Cast Iron |
| Tropicalized Painting |
According to IEEE-841 (96h) |
| Joints Seal |
Molykote |
| Foot flatness |
(0.005 pol) 0.127 mm |
| Fan material |
Bronze |
| Bearing cap |
Yes- Bearing Cap |
| Bolt Material |
Carbon Steel |
| Balancing Method |
1/2 Key |
| Drip Cover |
Without |
| Overload protector (phenolic) |
Without overload protector |
| Connection Cables Quantity |
3 |
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