Experiments with a universal motor in shunt connection

VP3.5.3.3
Experiments with a universal motor in shunt connection
Experiments with a universal motor in shunt connection

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Description

The experiment P3.5.3.3 takes a look at the so-called universal motor, in which the stator and rotor fields are electrically excited. The stator and rotor coils are connected in series (“serieswound”) or in parallel (“shunt-wound”) to a common voltage source. This motor can be driven both with DC and AC voltage, as the torque acting on the rotor remains unchanged when the polarity is reversed. The torque curve M(f) is recorded for both circuits. The experiment shows that the speed of the shuntwound motor is less dependent on the load than that of the series-wound motor.

Components of equipment sets

1 563480 ELM basic set LD
1 72781  4  Basic machine unit LD
1 72619  4  Panel frame SL85, single-level LD
1 531120 Multimeter LDanalog 20 LD
1 521391  4  AC/DC power supply 0...24 V/5 A LD
1 451281  8  Stroboscope LD
1 314151  4  Precision dynamometer, 2 N LD
1 314161  4  Precision dynamometer, 5 N LD
1 30950  4  Demonstration cord LD
1 666470  8  Holder with clamp, height-adjustable, CPS LD
1 30041  4  Stand rod, 25 cm, 12 mm Ø LD
2 500621  4  Safety experiment cable, 50 cm, red LD
2 500622  4  Safety experiment cable, 50 cm, blue LD
1 500641  8  Safety experiment cable, 100 cm, red LD
1 500642  4  Safety experiment cable, 100 cm, blue LD
1 56323  8  * ELM three-pole rotor LD

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

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