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Products  |  Theory of Machines and Properties of Materials  |  Theory of Machines  |  AT 300
AT 300 Theory of Electric Motors Show data sheet (pdf file) Print page
Technical Description
An important system component in most areas of engineering is formed by electrical drive units. They are available in such variety and such numbers that it is scarcely possible to avoid the need for knowledge of the basic principles of small electrical drives. AT 300 enables to become familiar with various types of small electric motors, and to investigate their electrical and mechanical behaviour under load. Four different motors are provided. They are loaded via an adjustable belt brake. The braking force is directly indicated by a mechanical force transducer (spring balance). An optical sensor measures the speed. The relationship between current and loading torque is shown by an ammeter. The exchange of the experimental motors is uncomplicated and can be done by hand. Due to the simple assembly, tools are not required. Electric connections of motor and switch board are realized with laboratory cables. The unit is excellently suited to student experiments.
Learning Objectives / Experiments
- Determine the speed-torque characteristic curve of
  electric drive motors of less than 1kW
  + Three-phase motor, for single-phase operation 
     with Steinmetz wiring 
  + single-phase motor with starting capacitor 
  + split-pole motor
  + universal motor
- Measurement of motor power
- Determining motor efficiency
- Current consumption of the investigated motor
  depending of the loading torque
Features
* Determination of brake characteristic curve of four
  different electric motors
* Motor load via belt brake
* Extensive instrumentation
* Quick exchange of experimental motors due to
  uncomplicated manual assembly
Specification
[1] Mobile bench to determine brake characteristic curves of electric motors
[2] 3-phase motor wired according to Steinmetz, 1-phase motor with starting capacitor, split-pole motor, universal motor
[3] Quick assembly of experimental motors without tools due to individual base plates for every motor
[4] Voltmeter,ammeter, power meter, tachometer
[5] Belt drum brake unit with 2 different spring balances: 100N, graduation 1N; 200N, grad. 4N
[6] Circuit diagram printed on switch panel
[7] l x w x h: 900x700x1700mm, 85kg
[8] 230V, ~50Hz
Technical Data
3-phase motor 1: 550W, 2810rpm
Split-pole motor: 110W, 1300rpm
Motor with starting capacitor: 550W, 2830rpm
Universal shunt motor: 190W, 9000rpm
Voltmeter: 0...250V ±1.5%
Ammeter: 0...15A
Current overload indicator: 30A ±1.5%
Power meter: 0...1000W ±1.5%
Tachometer: 0...15000rpm
Spring balance 1: 100N, graduation 1N
Spring balance 2: 200N, graduation 4N
Dimensions and Weight
l x w x h : 900 x 700 x 1700 mm
Weight : approx. 85 kg
Connections
230V, ~50Hz
Scope of Delivery
1 trainer, completely assembled,1 split-pole motor, 1 universal motor, 1 single-phase motor with starting capacitor, 1 three-phase motor, 1 set of cables, 1 instruction manual
Order Details
031.30000 AT 300 Theory of Electric Motors
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© 2005 G.U.N.T. Gerätebau GmbH