Typical Motor Data

480 V Motors

Notes:
1. Beware of typical data.
2. Efficiency based on "premium" efficient motors.  Subtract 4-5% for older motors.
3. Data is generally for 1800 rpm motors.  Running power factor can vary widely.

HP Full Load A Locked Rotor Multiplier Full Load Efficiency % Full Load Power Factor Starting Power factor X/R
.5 1.1 13 74 .6 .6 2
.75 1.6 13 74 .6 .6 2
1 2.1 13 74 .6 .6 2
1.5 3.0 12 85 .65 .6 2
2 3.4 10 86 .7 .6 2
3 4.8 9 88 .75 .6 2
5 7.6 8 88 .75 .6 2.5
7.5 11 7.5 91 .8 .5 2.5
10 14 7.5 91 .8 .5 3
15 21 7 92 .8 .5 3
20 27 7 93 .82 .45 3.5
25 34 7 93 .82 .45 4
30 40 7 93 .82 .45 4.5
40 52 7 94 .82 .4 5
50 65 7 94 .82 .4 5.2
60 77 7 95 .82 .35 6
75 96 7 95 .82 .35 6.6
100 124 7 95 .82 .3 7.7
125 156 7 95 .82 .3 10
150 180 7 95 .82 .3 11
200 240 7 95 .82 .3 12
250 302 7 95 .82 .25 13.5
300 361 7 95 .82 .25 14.5
350 414 7 95 .82 .25 15
400 477 7 95 .82 .25 17.5
450 515 7 95 .82 .25 18.2
500 590 7 95 .82 .25 19

Medium Voltage Motors

* = see table below

HP Full Load A Locked Rotor Multiplier Full Load Efficiency % Full Load Power Factor Starting Power factor X/R
250 * 7 96 .86 .25 13.5
300 * 7 96 .87 .22 14.5
350 * 7 96 .87 .21 15
400 * 7 96 .87 .2 17.5
450 * 7 96 .88 .2 18.2
500 * 7 96 .88 .19 19
600 * 6.5 96 .88 .18 20
700 * 6.5 96 .88 .17 21.5
750 * 6.5 96 .88 .17 22
800 * 6.5 96 .88 .17 22.5
900 * 6.5 96 .89 .16 24
1 000 * 6.5 96 .89 .15 25
1 250 * 6 96 .89 .15 26
1 500 * 6 96 .90 .15 29
2 000 * 6 96 .90 .15 29.5
2 500 * 6 96 .90 .15 30
3 000 * 5.5 96 .90 .15 32.5
4 000 * 5.5 96 .90 .15 33
5 000 * 5.5 96 .90 .15 33
6 000 * 5.5 96 .90 .15 33
7 000 * 5.5 96 .90 .15 33
8 000 * 5.5 96 .90 .15 33
9 000 * 5.5 96 .90 .15 33
10 000 * 5.5 96 .90 .15 33

Medium Voltage Motor Currents

2 300V 4 000 6 600 13 200
(200 - 4000 HP) (400 - 7000 HP) 1 000 - 12 000 HP) (2 500 - 25 000 HP)
100 24
125 30
150 36
200 47
250 59 32 20
300 69 38 23
350 81 45 27
400 93 51 31
450 103 57 34
500 114 63 38
600 137 76 46
700 160 89 53
750 172 95 57
800 183 101 61
900 204 113 68
1 000 226 125 75
1 250 283 156 94
1 500 336 186 112
1 750 392 216 131
2 000 447 247 149
2 500 559 309 186
3 000 671 371 224 112
3 500 783 433 261 131
4 000 895 495 298 149
4 500 557 336 168
5 000 619 373 186
6 000 742 447 224
7 000 866 522 261
8 000 597 298
9 000 671 336
10 000 746 373