Lab Experiment No. 5: Single-Phase Motors
Lab Experiment No. 5: Single-Phase Motors
Lab Experiment No. 5: Single-Phase Motors
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-EE 448 <strong>Lab</strong>oratory <strong>Experiment</strong> 5<strong>Single</strong> <strong>Phase</strong> Induction <strong>Motors</strong><strong>No</strong>te that the module is wired as a standard capacitor start motor.6. Set the dynamometer control knob at its full ccw position to provideminimum starting torque for the capacitor start motor.120 VoltVoltageVariableACSource88214N4+Ammeter8 Amp+ -I1---W1Wattmeter--V1++Voltmeter-Capacitor StartMotorMain1 2CentrifugalSwitch6 7Auxilary3 4C5120 VAC Source88211N1Electro-Dynamometer--Fig. 5 Capacitor start motor connection diagram7. a. Turn on the power supply and adjust for 120 Vacb. Measure and record in Table 3 the line current, the power and motorspeed.c. Repeat (b) for each of the torques listed in Table 3.d. Return the voltage to zero and turn off the power supply.Table 3V(volts)Torque(lb-in)120 0120 3120 6120 9120 12I(amps)S(va)P(watts)Speed(r/min)Output(hp)eff(%)p.f.(%)- 12 -
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