Motor Current - Eyre and Elliston

1 SELECTION TABLES - Three-Phase MotorsAC 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 averageefficiency and power factor. Motors of higher speed usually take alower Current than that shown in the table; while motors of lowerspeed usually take higher Current . Wide variations from these figurescan arise, especially on single phase motors, and engineers should,whenever possible, determine the actual from the Motor ratingplate in each at line kW10 kW11 kW15 kW18 kW22 kW30 kW37 kW45 kW55 kW75 kW90 kW110 kW130 kW150 kW1/81/61/41/31/23 ac240V ac380V ac415V ac550V achpMotorratingApprox. at line kW3 kW4 kW1/121/81/61/41/31/23 ac220V ac240V achpMotorratingTo convertInches to millimetres (mm)Millimetres to inchesFeet to metres (m)Metres to feet (ft)Yards to metres (m)Metres to yards (yds)Miles to kilometres (km)Kilometres to milesSquare inches to square millimetres (mm2)Square millimetres to square inches (inch2)Square yards to square metres (m2)Square metres to square yards (yds2)Cubic inches to cubic centimetres (cm2)Cubic centimetres to cubic inches (inch3)Pounds to kilogrammes (kg)Multiply convertKilogrammes to pounds (lb)Tons ( ) to kilogrammes (kg)Kilogrammes to tons ( lb)Ounces (avoirdupois) to grammesGrammes to ounces (avoirdupois)Gallons to litresLitres to gallonsForce N (Newtons to lb ft1N = 1kg (mass) accelerated at 1 metre/sec1Nm=1J (Joule) to calorieHorsepower to kilowatts (kW)Kilowatts to horsepower ( )1W (watt) = 1J/SAtmospheres to lb per square inch (lb/inch2))

2 1bar = 1kg/cm2= Hg= , CurrentNo liability can be accepted for the data which appears in these pages, its purpose is for guidance PHASE MOTORSSINGLE PHASE MOTORSG eneral Conversion Tables