Synchronous Machines, 0.3 kW

VE2.2.5.0
Synchronous Machines, 0.3 kW
Synchronous Machines, 0.3 kW

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This experiment/set up contains dangerous goods.
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Description

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.

Objectives

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

Features

  • In order to protect against overheating, the stator windings of the test machines are equipped with temperature sensors
  • Should overheating occur, the machine testing system automatically shuts down the machine under test, thus preventing any damage to it.
  • 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 connected to the terminal board and can be accessed via 4-mm safety sockets.
  • Computer-supported acquisition of measurement data provides for meaningful measurement results.

The actual area of application for synchronous machines is as generators. They are used in many forms, from a small shaft generator to supply energy for a ship (output in the kW range) right up to hydrogen-cooled power station generators (output in megawatts). Topics investigated include run-up, excitation and efficiency as well as the various types of loading. One interesting aspect in the subject of power station control, which is handled in greater detail as part of the topic Electric power supply technology.

The complete 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.

Synchronous motor topics

  • Non-salient-pole and salient-pole rotors
  • Voltage equations
  • Equivalent circuit and vector diagram
  • Operation with no-load and with a permanent three-pole short-circuit
  • Locus diagrams and control characteristics
  • Torque and loading
  • Potier diagram and armature reaction
  • Synchronisation and use of multiple machines in parallel
  • Starting methods for synchronous motors
  • Control of reactive power
  • Power performance

Synchronous generator topics

  • Voltage generation
  • Excitation of synchronous machines
  • Operating response
  • Armature current and torque
  • Braking operation and locus diagrams
  • Starting and synchronisation
  • Single-phase generators

Main components:

Components of equipment sets

1 773236 Synchronous Machine SP 0.3 LD
1 773237  8  Synchronous Machine SR 0.3 LD
1 773228 * Multi-Function Machine 0.3 LD
1 73240 Resistive load 0.3 LD
1 73241 Capacitive load 0.3 LD
1 73242  8  Inductive load LD
1 74505 Manual synchronisation unit LD
1 73214  8  Motor protection switch, 1-1.6 A LD
1 745561 Power circuit breaker module LD
1 728421  4  CBM10 MOMO/FCCP LD
1 73106  4  Coupling 0.3 LD
Manuals:
1 775205DE  4  LIT: E2.2.5.0 Synchronous Machines 0.3 (German) LD
1 775205EN  4  LIT: E2.2.5.0 Synchronous Machines 0.3 LD
3 531282  8  Multimeter Metrahit Pro LD
1 72712 Power factor meter LD
1 72732  8  Moving iron meter, 2.5 A LD
Power supply:
1 72675  8  Three-phase supply unit with RCD LD
1 725852DG DC machine supply 0.3 LD
1 726890  4  * DC-High Current Power Supply 1...32 V/0...20 A LD
1 500990 * Adapter sockets, set of 2 LD
1 72609  8  Panel frame T130, two-level LD
1 50059 Safety bridging plugs, black, set of 10 LD
1 500591  8  Safety bridging plugs, yellow/green, set of 10 LD
1 500851  4  Safety connecting leads, 32 A, set of 32 LD
1 500852  8  Safety connecting leads, 32 A, yellow/green, set of 10 LD
additionally required:
PC with Windows 7/8/10

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 Assembly set el. machine base 0.3 short LD
1 773182  8  Assembly set el. machine base 0.3 long LD

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

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