Version 1.00 | Optidrive CoolVert User Guide | 47www.invertekdrives.com
7
Useful Conversions and Formulae
7. Useful Conversions and Formulae
Table showing the electrical frequency of the power applied to the motor and the rotational speed of the motor in both rpm
(revolutions per minute) and rps (revolutions per second) for motors with different number of electrical poles:
2 Poles 4 Poles 6 Poles 8 Poles
Hz rpm rps Hz rpm rps Hz rpm rps Hz rpm rps
20 1200 20 20 600 10 15 300 5 20 300 5
30 1800 30 30 900 15 30 600 10 40 600 10
40 2400 40 40 1200 20 45 900 15 60 900 15
50 3000 50 50 1500 25 60 1200 20 80 1200 20
60 3600 60 60 1800 30 75 1500 25 100 1500 25
70 4200 70 70 210 0 35 90 1800 30 12 0 1800 30
80 4800 80 80 2400 40 105 210 0 35 14 0 210 0 35
90 5400 90 90 2700 45 12 0 2400 40 160 2400 40
100 6000 100 10 0 3000 50 135 2700 45 18 0 2700 45
12 0 7200 12 0 12 0 3600 60 15 0 3000 50 200 3000 50
14 0 8400 14 0 14 0 4200 70 165 3300 55 220 3300 55
160 9600 160 160 4800 80 18 0 3600 60 240 3600 60
180 10800 180 180 5400 90 19 5 3900 65 260 3900 65
200 12000 200 200 6000 100 210 4200 70 280 4200 70
220 13200 220 220 6600 110 225 4500 75 300 4500 75
240 14400 240 240 7200 12 0 240 4800 80 320 4800 80
260 15600 260 260 7800 13 0 255 5100 85 340 5100 85
280 16800 280 280 8400 140 270 5400 90 360 5400 90
300 18000 300 300 9000 15 0 285 5700 95 380 5700 95
320 19200 320 320 9600 160 300 6000 100 400 6000 100
340 20400 340 340 10200 170 315 6300 105 420 6300 105
360 21600 360 360 10800 180 330 6600 110 440 6600 110
380 22800 380 380 11400 19 0 345 6900 115 460 6900 115
400 24000 400 400 12000 200 360 7200 12 0 480 7200 12 0
420 25200 420 420 12600 210 375 7500 125 500 7500 125
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