E 2.1.3.1 Maszyny elektryczne niskiego napięcia

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Opis

The experiments use components from the electrical machine teaching models system and utilise safety extra-low voltage. All machines are mounted on a base unit which is set up vertically in a training panel frame.

Objectives

  • Recognising basic physical principles
  • Recording machine characteristics
  • Introduction to drive technology
  • Use of simple tools (spanners, oil cans etc.)

This equipment set allows DC, AC and three-phase machines to be assembled from a few easily sorted separate components. The fully functional machines demonstrate the various combinations of stators and rotors and allow for investigation of the various circuit configurations. In spite of these educational machines having model-like characteristics, it is possible to demonstrate the physical processes and typical responses of large-scale machines. The machines are mounted on a base terminal unit and set up with special overlay masks. The open design makes it possible to observe the individual functioning parts in operation. All experiments are carried out using safety extra-low voltage. In addition to conventional machine types, the fundamental properties of linear motors are also covered. New to the range are the three-phase machines with permanently excited rotors made of rare earth metals (high-efficiency rotors).

The equipment set incorporates student experiments which can be carried out in a laboratory safely using safety extra-low voltage. Experiment instructions are contained in a manual in either printed or digital form.

The target group is made up of students in general or vocational education. The experiments are designed as an introduction at a simple level of understanding.

For more advanced understanding, E2.1.3.2 ELM High-efficiency machines for safety extra-low voltage is recommended.

Topics

  • AC generators with permanent magnet
  • How terminal voltage depends on speed and load
  • Determination of neutral zone
  • Three-pole rotors/twelve-pole rotors
  • Generators with separate excitation
  • Remanence and self-excitation
  • Series-wound and shunt-wound generators
  • Compound-wound generators
  • AC generators
  • Stationary armature and rotating armature machines
  • Three-phase generators
  • Generator with load in star circuit with and without neutral conductor
  • Delta circuit for a generator
  • Synchronisation of three-phase generators with the mains
  • DC motors
  • Commutation
  • Motors with separate excitation
  • Shunt-wound/series-wound/compound-wound motors
  • AC motors
  • Universal motors
  • Single-phase synchronous and asynchronous (induction) motors
  • Starting motors
  • Single-phase induction motor with capacitive/resistive auxiliary phase
  • Repulsion motors
  • Speed control and reversal by adjusting brushes
  • Shaded-pole motors
  • Rotating fields
  • Reversal of rotational sense
  • Three-phase motors
  • Three-phase squirrel cage rotors
  • Star and delta circuits
  • Speed response to loading
  • Braking circuits
  • DC braking
  • Stator resistance starting circuit
  • Three-phase slip-ring rotors
  • Rotor standstill voltage and rotor current
  • Switchable pole three-phase motors in Dahlander configuration
  • Three-phase machines with six pole pieces
  • Synchronous motors
  • Linear motors

Similar to illustration

563 11   ELM coil, 250 turns 6
563 12 ELM squirrel-cage rotor 1
563 13   ELM brush 5
563 16   Allen key 1
563 17   ELM centring disc 1
563 18   ELM brush holder rack 1
563 22   ELM two-pole rotor 1
563 23   ELM three-pole rotor 1
563 24 ELM drum rotor 1
563 25 ELM rotating field attachment and squirrel cage ring 1
563 28   ELM magnetic needle rotor 1
563 29 ELM aluminium ring with iron disc 1
563 31   Oil, 100 ml, in dropping bottle 1
727 811   Basic machine unit 1
727 82 Basic terminal unit 1
727 83 Set of masks 1
727 85 Starter 1
727 86 Field regulator 1
727 87 Star-delta load 1
727 88   Drive unit 1
685 96   Driving belt, long for drive unit 72788 1
563 091   ELM pole piece for magnets 2
563 101   ELM wide pole piece for coils 3
563 115 ELM coil, 500 turns 2
563 201 ELM narrow pole piece for coils 6
563 211 ELM split pole piece for coils 2
505 171 Bulbs, 6 V/1.1 W, E10, set of 10 3
505 191 Bulbs, 15 V/2 W, E10, set of 5 3
510 48   Magnets, 35 mm Ø, pair 1
578 16   Capacitor, 4.7 µF, STE 2/19 3
579 06   Lamp holder, E10, top, STE 2/19 3
579 10   Push button (NO), STE 2/19 1
579 13   Toggle switch, STE 2/19 1
313 20 * Digital hand-held tachometer 1
524 013S   * Sensor-CASSY 2 Starter 1
531 282   Multimeter Metrahit Pro 2
726 09   Panel frame T130, two-level 1
725 721G * Three-phase generator in case 1
725 579G Three-phase supply / experiment transformer 1
563 04   Storage tray for ELM apparatus 1
500 59   Safety bridging plugs, black, set of 10 1
500 592   Safety bridging plugs with tap, black, set of 10 1
501 532   Connecting leads, 19 A, set of 30 1
564 171   LIT: El. Motor & Gen. Mod. B (German) 1
564 172   * LIT: El. Motor & Gen. Mod. B (English) 1
additionally required: PC with Windows XP/Vista/7/8

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

 

Marka

Leybold

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.