The W01 Rolled Steel motors were especially developed for fire pump application. They ensure maximum performance and robustness in environments where dirt and humidity are minimal.
| Standard |
NEMA MG-1 |
| Frequency |
60//50 Hz |
| Voltage |
230/460//190-220/380-415 V |
| Number of poles |
4 |
| Synchronous speed |
1800 rpm |
| Output rating |
20 HP |
| Mounting |
F-1 |
| Flange |
Without |
| Terminal box¹ |
Left position |
| Enclosure |
IC01 - ODP |
Electric Motors
| Frame |
254/6T |
| Output |
20 HP (15 kW) |
| Number of Poles |
4 |
| Frequency |
60 Hz |
| Rated speed |
1755 rpm |
| Slip |
2.50 % |
| Rated voltage |
230/460 V |
| Rated current |
51.0/25.5 A |
| L. R. Amperes |
281/140 A |
| LRC |
5.5x(Code F) |
| No load current |
23.0/11.5 A |
| Rated torque |
59.8 ft.lb |
| Locked rotor torque |
190 % |
| Breakdown torque |
220 % |
| Locked rotor time |
21s (cold) 12s (hot) |
| Moment of inertia (J) |
1.28 sq.ft.lb |
| Design |
B |
| Insulation Class |
F |
| 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. |
| Enclosure |
IC01 - ODP |
| Mounting |
F-1 |
| Rotation¹ |
Both (CW and CCW) |
| Noise level² |
64.0 dB(A) |
| Approx. weight³ |
175 lb |
Efficiency
| 50% |
91.0 |
| 75% |
91.0 |
| 100% |
91.0 |
Power factor
| 50% |
0.67 |
| 75% |
0.78 |
| 100% |
0.81 |
Features
| Frame Material |
Rolled Steel |
| Impregnation Method |
Dip and Bake Polyester |
| Regreasing System |
At Drive end and Non-drive end |
| Main terminal box hole |
1.732" |
| Terminal Block |
Without |
| Shaft Material |
SAE 1040/45 Carbon Steel |
| Painting |
RAL 3002 207N (ISO 12944 - C2) |
| Grounding Lugs |
Superior |
| Fan Cover material |
Without Fan Cover |
| Tropicalized Painting |
Without |
| Fan material |
Without fan |
| Bearing cap |
No-Without Bearing Cap |
| Bolt Material |
Carbon Steel |
| Balancing Method |
1/2 Key |
| Drip Cover |
Without |
| Resilient Base |
Without |
| Overload protector (phenolic) |
Without overload protector |
| Connection Cables Quantity |
12 |
Features
| Frame Material |
Rolled Steel |
| Impregnation Method |
Dip and Bake Polyester |
| Regreasing System |
At Drive end and Non-drive end |
| Main terminal box hole |
1.732" |
| Terminal Block |
Without |
| Shaft Material |
SAE 1040/45 Carbon Steel |
| Painting |
RAL 3002 207N (ISO 12944 - C2) |
| Grounding Lugs |
Superior |
| Fan Cover material |
Without Fan Cover |
| Tropicalized Painting |
Without |
| Fan material |
Without fan |
| Bearing cap |
No-Without Bearing Cap |
| Bolt Material |
Carbon Steel |
| Balancing Method |
1/2 Key |
| Drip Cover |
Without |
| Resilient Base |
Without |
| Overload protector (phenolic) |
Without overload protector |
| Connection Cables Quantity |
12 |
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