Electric Motors
Frame | 254HP |
---|---|
Output | 20 HP (15 kW) |
Number of Poles | 2 |
Frequency | 60 Hz |
Rated speed | 3520 rpm |
Slip | 2.22 % |
Rated voltage | 208-230/460 V |
Rated current | 51.4-46.5/23.2 A |
L. R. Amperes | 314-284/142 A |
LRC | 6.1x(Code G) |
No load current | 0.000-13.0/6.50 A |
Rated torque | 29.8 ft.lb |
Locked rotor torque | 200 % |
Breakdown torque | 240 % |
Locked rotor time | 37s (cold) 21s (hot) |
---|---|
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. |
Degree of Protection | IP55 |
Enclosure | IC411 - TEFC |
Mounting | W-6 |
Rotation¹ | Both (CW and CCW) |
Noise level² | 72.0 dB(A) |
Approx. weight³ | 284 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% |
---|---|---|
91.0 | 91.7 | 91.0 |
Power factor
50% | 75% | 100% |
---|---|---|
0.82 | 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 | With |
Overload protector (phenolic) | Without overload protector |
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