Product Brochure

V5-T4-86 Volume 5—Motor Control and Protection CA08100006E—May 2013 www.eaton.com
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4.8
Definite Purpose Contactors and Starters
Ratings
Ampere Rating of AC Motors
Ampere ratings of motors
vary somewhat, depending
upon the type of motor. The
values given below are for
drip-proof, Class B insulated
(T Frame) where available,
1.15 service factor, NEMA
Design B motors. These
values represent an average
full load motor current which
was calculated from the
motor performance data
published by several motor
manufacturers. In the case of
high torque squirrel cage
motors, the ampere ratings
will be at least 10% greater
than the values given below.
Caution—These average
ratings could be high or low
for a specific motor and
therefore heater coil
selection on this basis
always involves risk. For
fully reliable motor
protection, select heater
coils on the basis of full
load current rating as
shown on the motor
nameplate.
Ampere Ratings of Three-Phase, 60 Hz, AC Induction Motor
Notes
1
To convert horsepower to kW, multiply horsepower by 0.7457.
2
380V 50 Hz.
Syn. Speed
RPM
Current in Amperes
hp
1
200V 230V 380V
2
460V 575V 2200V
1/41800 1.090.950.550.480.38—
1200 1.61 1.4 0.81 0.7 0.56 —
900 1.84 1.6 0.93 0.8 0.64 —
1/3 1800 1.37 1.19 0.69 0.6 0.48 —
1200 1.83 1.59 0.92 0.8 0.64 —
900 2.07 1.8 1.04 0.9 0.72 —
1/21800 1.981.720.990.860.69—
1200 2.47 2.15 1.24 1.08 0.86 —
900 2.742.381.381.190.95—
3/41800 2.832.461.421.230.98—
1200 3.36 2.92 1.69 1.46 1.17 —
900 3.753.261.881.631.3 —
1 3600 3.22 2.8 1.7 1.4 1.12 —
1800 4.09 3.56 2.06 1.78 1.42 —
1200 4.32 3.76 2.28 1.88 1.5 —
900 4.954.3 2.6 2.151.72—
1-1/23600 5.014.362.642.181.74—
1800 5.59 4.86 2.94 2.43 1.94 —
1200 6.07 5.28 3.2 2.64 2.11 —
900 6.44 5.6 3.39 2.8 2.24 —
2 3600 6.44 5.6 3.39 2.8 2.24 —
1800 7.36 6.4 3.87 3.2 2.56 —
1200 7.87 6.84 4.14 3.42 2.74 —
900 9.09 7.9 4.77 3.95 3.16 —
3 3600 9.598.345.024.173.34—
1800 10.8 9.4 5.7 4.7 3.76 —
1200 11.7 10.2 6.2 5.12 4.1 —
900 13.111.46.9 5.7 4.55—
5 3600 15.5 13.5 8.2 6.76 5.41 —
1800 16.6 14.4 8.74 7.21 5.78 —
1200 18.2 15.8 9.59 7.91 6.32 —
900 18.3 15.9 9.6 7.92 6.33 —