E Silnik klatkowy 400/690 300W

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The experiments are carried out using machines of industrial manufacture. All the test machines are equipped with a special base for attachment to the Machine test system 0.3. The system allows the characteristics of the machines under test to be recorded. Power for the machines under test is provided either directly from the mains or via special laboratory power supplies.


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

Induction or asynchronous machines are in widespread use. In particular, the low-maintenance squirrel cage motors fed via frequency converters are increasingly replacing both DC and AC machines. Asynchronous machines are used as motors and generators for low power applications of up to 2.5 MW. When used as generators in wind turbines, asynchronous generators operate without additional auxiliary energy.

Basic Drive

  • Squirrel cage motors in the Basic Drive class are industrial machines which are supplied with the manufacturers' original terminal board. An illustration of the winding configuration has been deliberately omitted.
  • The safety sockets on the terminal board are safely accessible behind a plexiglass pane.
  • The winding terminals are labelled according to international standards.
  • Basic Drive machines are supplied with no temperature sensors and need to be protected from overloading by means of a motor protection circuit breaker. The experiments are therefore very similar to industrial practice.
  • Basic Drive machines are available exclusively in the 300 W rating class.

The individual equipment set is equally suitable for student experiments in laboratories with low voltage supplies (400 V three-phase) and for setting up on a mobile trolley for demonstration by teachers in a classroom. The procedures for the experiments are provided in a printed manual.

The target group is made up of commercial apprentices and students of electrical machine construction. The course offers experiments at an intermediate level and also allows for the necessary insight into machine behaviour for scientific interpretation at undergraduate level.


  • Design and function
  • Characteristics during motor operation
  • Starting
  • Star-delta starting
  • Stator resistance starting circuit
  • Braking
  • Power performance of an ideal rotating field machine
  • Power flux
  • Locus (Heyland circle) diagram
  • Open-circuit experiment
  • Short-circuit load experiment

Similar to illustration

Components of equipment sets

732 203   Squirrel cage motor basic 400/690/0.3 1
726 75   Three-phase supply unit with ELCB 1
732 14 Motor protection switch, 1-1.6 A 1
731 42 On/off switch, three-pole 1
745 561 Power circuit breaker module 1
732 40   Resistive load 0.3 1
732 41 Capacitive load 0.3 1
731 47 Star-delta switch 1
731 48 * Star-delta reversing switch 1
731 49 Reversing switch 1
731 50 * Star-delta starter 1
731 51 Soft starter 0.3 /1.0 1
731 989USB   Machine test system 0.3 1
728 421   CBM10 MOMO/FCCP 1
531 282   Multimeter Metrahit Pro 2
727 12   Power factor meter 1
726 09   Panel frame T130, two-level 1
731 06   Coupling 0.3 1
731 081   Coupling guard 0.3 transparent 1
500 59   Safety bridging plugs, black, set of 10 2
500 591   Safety bridging plugs, yellow/green, set of 10 1
500 851   Safety connecting leads, 32 A, set of 32 1
500 852   Safety connecting leads, 32 A, yellow/green, set of 10 1
569 2301L   LIT: Asynchronous Machines (in German) T 10.4.1 1
569 2301S   LIT: Asynchronous Machines (in German) T 10.4.1 1
569 2302   * LIT: Asynchronous Machines (in English) T 10.4.1 1
additionally required: PC with Windows XP/Vista/7/8
Instead of the transparent coupling guard 731081 there is alternatively a full metal version available under Cat. Nr. 73108.

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




Firma produkuje zestawy edukacyjne do kształcenia akademickiego oraz szkolenia zawodowego z zakresu fizyki, chemii, biologii oraz elektroniki, elektrotechniki, automatyki, telekomunikacji, maszyn elektrycznych, odnawialnych źródeł energii i fotoniki, jest częścią grupy LD Didactic.