Technical Resources
We have gathered together a number of technical resources for use as reference on electrical projects.
Motor: Motor Current Charts
Download as PDF
Selection Tables – Three Phase Motors
AC Motors – full load current tables (1450rpm approx.)
(provided as a guide to the selection of suitable MEM control gear). The tables are based on motors of approximately 1450rpm of average efficiency and power factor. Motors of higher speed usually take a lower current than that shown in the table; while motors of lower speed usually take higher current. Wide variations from these figures can arise, especially on single phase motors, and engineers should, whenever possible, determine the actual f.l.c from the motor rating plate in each case.
Single Phase Motors
| MOTOR RATING | HP | APPROX. F.L.C. AT LINE VOLTAGE | ||
|---|---|---|---|---|
| 110V AC | 220V AC | 240V AC | ||
| 0.07 kW | 1/12 | 2.4 | 1.2 | 1.1 |
| 0.1 kW | 1/8 | 3.3 | 1.6 | 1.5 |
| 0.12 kW | 1/6 | 3.8 | 1.9 | 1.7 |
| 0.18 kW | 1/4 | 4.5 | 2.3 | 2.1 |
| 0.25 kW | 1/3 | 5.8 | 2.9 | 2.6 |
| 0.37 kW | 1/2 | 7.9 | 3.9 | 3.6 |
| 0.56 kW | 3/4 | 11 | 5.5 | 5 |
| 0.75 kW | 1 | 15 | 7.3 | 6.7 |
| 1.1 kW | 1.5 | 21 | 10 | 9 |
| 1.5 kW | 2 | 26 | 13 | 12 |
| 2.2 kW | 3 | 37 | 19 | 17 |
| 3 kW | 4 | 49 | 24 | 22 |
| 3.7 kW | 5 | 54 | 27 | 25 |
| 4 kW | 5.5 | 60 | 30 | 27 |
| 5.5 kW | 7.5 | 85 | 41 | 38 |
| 7.5 kW | 10 | 110 | 55 | 50 |
Three Phase Motors
| MOTOR RATING | HP | APPROX. F.L.C. AT LINE VOLTAGE | ||||
|---|---|---|---|---|---|---|
| 220V AC | 240V AC | 380V AC | 415V AC | 550V AC | ||
| 0.1 kW | 1/8 | 0.7 | 0.6 | 0.4 | 0.4 | 0.3 |
| 0.12 kW | 1/6 | 1 | 0.9 | 0.5 | 0.5 | 0.3 |
| 0.18 kW | 1/4 | 1.3 | 1.2 | 0.8 | 0.7 | 0.4 |
| 0.25 kW | 1/3 | 1.6 | 1.5 | 0.9 | 0.9 | 0.6 |
| 0.37 kW | 1/2 | 2.5 | 2.3 | 1.4 | 1.3 | 0.8 |
| 0.56 kW | 3/4 | 3.1 | 2.8 | 1.8 | 1.6 | 1.1 |
| 0.75 kW | 1 | 3.5 | 3.2 | 2 | 1.8 | 1.4 |
| 1.1 kW | 1.5 | 5 | 4.5 | 2.8 | 2.6 | 1.9 |
| 1.5 kW | 2 | 6.4 | 5.8 | 3.7 | 3.4 | 2.6 |
| 2.2 kW | 3 | 9.5 | 8.7 | 5.5 | 5 | 3.5 |
| 3.0 kW | 4 | 12 | 11 | 7 | 6.5 | 4.7 |
| 3.7 kW | 5 | 15 | 13 | 8 | 8 | 6 |
| 4.0 kW | 5.5 | 16 | 14 | 9 | 8 | 6 |
| 5.5 kW | 7.5 | 20 | 19 | 12 | 11 | 8 |
| 7.5 kW | 10 | 27 | 25 | 16 | 15 | 11 |
| 9.3 kW | 12.5 | 34 | 32 | 20 | 18 | 14 |
| 10 kW | 13.5 | 37 | 34 | 22 | 20 | 15 |
| 11 kW | 15 | 41 | 37 | 23 | 22 | 16 |
| 15 kW | 20 | 64 | 50 | 31 | 28 | 21 |
| 18 kW | 25 | 67 | 62 | 39 | 36 | 26 |
| 22 kW | 30 | 74 | 70 | 43 | 39 | 30 |
| 30 kW | 40 | 99 | 91 | 57 | 52 | 41 |
| 37 kW | 50 | 130 | 119 | 75 | 69 | 50 |
| 45 kW | 60 | 147 | 136 | 86 | 79 | 59 |
| 55 kW | 75 | 183 | 166 | 105 | 96 | 72 |
| 75 kW | 100 | 239 | 219 | 138 | 125 | 95 |
| 90 kW | 125 | 301 | 269 | 170 | 156 | 117 |
| 110 kW | 150 | 350 | 325 | 205 | 189 | 142 |
| 130 kW | 175 | 410 | 389 | 245 | 224 | 169 |
| 150 kW | 200 | 505 | 440 | 278 | 255 | 192 |
Download as PDF
DISCLAIMER: The information on this page and the PDF is for information only and R&M Electrical Group Ltd can not be held liable for any information therein.
