Page 490 - ACEL 2024-2025 Catalogue

Useful Information - General Data
Motor Current No liability can be accepted for the data below which is given for guidance only
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 a 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
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 0.12 kW 0.18 kW 0.25 kW 0.37 kW 0.56 kW 0.75 kW 1.1 kW 1.5 kW 2.2 kW 3.0 kW 3.7 kW 4.0 kW 5.5 kW 7.5 kW 9.3 kW 10 kW 11 kW 15 kW 18 kW 22 kW 30 kW 37 kW 45 kW 55 kW 75 kW 90 kW 110 kW 130 kW 150 kW
1/8 1/6 1/4 1/3 1/2 3/4 1 1.5 2
3 4 5 5.5 7.5 10 12.5 13.5 15 20 25 30 40 50 60 75 100 125 150 175 200
0.7 1 1.3 1.6 2.5 3.1 3.5 5 6.4 9.5 12 15 16 20 27 34 37 41 64 67 74 99 130 147 183 239 301 350 410 505
0.6 0.9 1.2 1.5 2.3 2.8 3.2 4.5 5.8 8.7 11 13 14 19 25 32 34 37 50 62 70 91 119 136 166 219 269 325 389 440
0.4 0.5 0.8 0.9 1.4 1.8 2 2.8 3.7 5.5 7 8 9 12 16 20 22 23 31 39 43 57 75 86 105 138 170 205 245 278
0.4 0.5 0.7 0.9 1.3 1.6 1.8 2.6 3.4 5 6.5 8 8 11 15 18 20 22 28 36 39 52 69 79 96 125 156 189 224 255
0.3 0.3 0.4 0.6 0.8 1.1 1.4 1.9 2.6 3.5 4.7 6 6 8 11 14 15 16 21 26 30 41 50 59 72 95 117 142 169 192
Motor rating
hp
Approx. F.L.C. at line voltage
110V ac
220V ac
240V ac
0.07 kW 0.1 kW 0.12 kW 0.18 kW 0.25 kW 0.37 kW 0.56 kW 0.75 kW
1/12 1/8 1/6 1/4 1/3 1/2 3/4 1
2.4 3.3 3.8 4.5 5.8 7.9 11 15
1.2 1.6 1.9 2.3 2.9 3.9 5.5 7.3
1.1 1.5 1.7 2.1 2.6 3.6 5 6.7
1.1 kW 1.5 kW 2.2 kW 3 kW 3.7 kW 4 kW 5.5 kW 7.5 kW
1.5 2 3 4 5 5.5 7.5 10
21 26 37 49 54 60 85 110
10 13 19 24 27 30 41 55
9 12 17 22 25 27 38 50
General Conversion Tables
Multiply by
0.239 0.7458 1.3408
14.68
To convert
Yards to metres (m)
Metres to yards (yds)
Miles to kilometres (km)
Kilometres to miles
Square inches to square millimetres (mm2)
Inches to millimetres (mm) Millimetres to inches
Feet to metres (m)
Metres to feet (ft)
2.2046 1,016.05 0.0009842 28.3495 0.0353 4.5461 0.220 0.225
25.4 0.03937 0.3048 3.2808 0.9144 1.0936 1.69093 0.6214 645.16 Square millimetres to square inches (inch2) 0.00155
Square yards to square metres (m2) Square metres to square yards (yds2) Cubic inches to cubic centimetres (cm3) Cubic centimetres to cubic inches (inch3) Pounds to kilogrammes (kg)
0.8361 1.196 16.387 0.06102 0.4536
Multiply by
To convert
Kilogrammes to pounds (lb)
Tons (2,240lb) to kilogrammes (kg) Kilogrammes to tons (2,240lb)
Ounces (avoirdupois) to grammes
Grammes to ounces (avoirdupois)
Gallons to litres
Litres to gallons
Force N (Newtons) to lb ft
1N = 1kg (mass) accelerated at 1metre/sec 1Nm = 1J (Joule) to calorie
Horsepower to kilowatts (kW)
Kilowatts to horsepower (h.p.)
1W (watt) = 1J/S
Atmospheres to lb per square inch (lb/inch2) 1bar = 1kg/cm2 =735.6mm Hg=14.2lb/inch2
490
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