Electric Motors
| Frame | 447/9T |
|---|---|
| Output | 250 HP (185 kW) |
| Number of Poles | 6 |
| Frequency | 60 Hz |
| Rated speed | 1185 rpm |
| Slip | 1.25 % |
| Rated voltage | 460 V |
| Rated current | 292 A |
| L. R. Amperes | 1781 A |
| LRC | 6.1x(Code G) |
| No load current | 120 A |
| Rated torque | 1110 ft.lb |
| Locked rotor torque | 240 % |
| Breakdown torque | 240 % |
| Locked rotor time | 21s (cold) 12s (hot) |
|---|---|
| Design | A |
| 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. |
| Degree of Protection | IP55 |
| Enclosure | IC411 - TEFC |
| Mounting | F-1 |
| Rotation¹ | Both (CW and CCW) |
| Noise level² | 70.0 dB(A) |
| Approx. weight³ | 3023 lb |
(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.
Efficiency
| 50% | 75% | 100% |
|---|---|---|
|
95.0 |
95.4 |
95.8 |
Power factor
| 50% | 75% | 100% |
|---|---|---|
|
0.68 |
0.79 |
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 | 2xNPT 3" |
| Terminal Block | Without |
| Shaft Locking Device | With |
| Drain | Rubber, automatic |
| Shaft Material | SAE 4140 Carbon Steel |
| Painting | RAL 5009 203A (ISO 12944 - C2) |
| Grounding Lugs | Double |
| Fan Cover material | Cast Iron |
| Tropicalized Painting | Without |
| Fan material | Aluminum |
| Bearing cap | Yes- Bearing Cap |
| Balancing Method | 1/2 Key |
| Drip Cover | Without |
| Overload protector (phenolic) | Without overload protector |
| Connection Cables Quantity | 12 |
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