Description
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Drawings
Electric Motors
| Frame | 254/6T |
|---|---|
| Output | 20 HP (15 kW) |
| Number of Poles | 2 |
| Frequency | 60 Hz |
| Rated speed | 3525 rpm |
| Slip | 2.08 % |
| Rated voltage | 230/460 V |
| Rated current | 46.4/23.2 A |
| L. R. Amperes | 283/142 A |
| LRC | 6.1x(Code G) |
| No load current | 13.0/6.50 A |
| Rated torque | 29.8 ft.lb |
| Locked rotor torque | 200 % |
| Breakdown torque | 240 % |
| Locked rotor time | 27s (cold) 15s (hot) |
| Moment of inertia (J) | 1.54 sq.ft.lb |
|---|---|
| Design | B |
| Insulation Class | F |
| Service factor | 1.25 |
| 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 | 72.0 dB(A) |
| Approx. weight³ | 332 lb |
Efficiency
| 50% | 75% | 100% |
|---|---|---|
| 90.7 | 91.0 | 91.0 |
Power factor
| 50% | 75% | 100% |
|---|---|---|
| 0.80 | 0.87 | 0.89 |
Features
| Frame Material | Cast Iron |
|---|---|
| Impregnation Method | Dip and Bake Polyester |
| Regreasing System | At Drive end and Non-drive end |
| Main terminal box hole | NPT 1 1/2″ |
| Terminal Block | Without |
| Shaft Locking Device | Without |
| Drain | Rubber, automatic |
| Shaft Material | SAE 1040/45 Carbon Steel |
| Painting | RAL 5009 203A (ISO 12944 – C2) |
| Grounding Lugs | Single |
| Fan Cover material | Cast Iron |
| Tropicalized Painting | Without |
| Fan material | Plastic |
| 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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