Universal motor AC, 0.3

VE2.2.3.1

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This experiment/set up contains dangerous goods.
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Description

The experiments are carried out with industrially manufactured machines. All test machines have a special base for connection to the Machine Test System 0.3. With the Machine Test CASSY all measured values of the AC machines are recorded. The measured values can be shown directly on the built-in display as a single value, table of a measurement series or diagram. The measurements can be made without additional software, and the measured data can be stored locally on the device. The machines are supplied via a variable transformer or the mains.

Objectives

Protective measures and electrical safety
Setting up electrical machines and putting them into operation
Use of starting circuits
Assessment of electrical machine characteristics

Universal motors are a kind of commutator machine for both DC and AC operation. This is achieved by additional lamination of the iron in the stator. Universal motors can also be called single-phase series-wound motors. They are in widespread use, for example, in household appliances and machine tools.

Highlights:

In order to protect against overheating, the stator windings of the test machines are equipped with temperature detectors.
In case of overheating, the machine testing system switches off the load of the test machine, thus a preserved air cooling. This prevents damage to the testing machines.
The test machines are equipped with an educationally designed terminal board with the winding configuration printed on it.
The ends of all the windings are led out at the terminal board at safety sockets (4 mm).
Computer-supported acquisition of measurement data provides for meaningful measurement results.
The arrangement of the 4 mm safety sockets corresponds to the standards for industrial machines.

In the following configurations there are further extended experiments with AC machines:

E2.2.2.2 Universal motor DC
E2.2.3.2 Capacitor motor

Topics

Connection and operation of universal machines in a DC power supply network
Reversing direction of rotation
Measurement of efficiency
Armature reaction and commutation
Characteristics of motors

Components of equipment sets

1	773200	Universal motor, 0.3
1	73284 8	Motor protection switch, 2.4-4 A


1	745563	Power circuit breaker


1	7731901	Machine Test CASSY 0.3
1	524222	CASSY Lab 2 for Drives and Power Systems
1	7731991	Electrical dynamometer, 0.3
1	773108	Coupling / shaft end guard 0.3, transparent
1	31539	Weight, 1 kg
1	773110	Machine base bench, 90 cm


1	773115	Machine base bench, 120 cm
1	73106	Coupling, 0.3


1	775195DE 4	LIT-print: AC machines 0.3, German
1	775195EN 4	* LIT-print: AC Machines 0.3


1	72685	Adjustable transformer 0...260 V


1	72609	Panel frame T130, two-level
2	50059	Safety bridging plugs, black, set of 10
1	500591	Safety bridging plugs, yellow/green, set of 10
1	500855	Safety experiment cables, 32 A, set of 34
1	500856	Safety experiment cables, 32 A, yellow/green, set of 5

**As an option for existing motors:**

The following base are options to use existing motors on site.
It's possible to use machines with B3 design and a 71 mm shaft level.
1	773181 4	Assembly set el. machine base 0.3 short
1	773182	Assembly set el. machine base 0.3 long

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

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Universal motor AC, 0.3

Description

Components of equipment sets

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