DC Machines, 1.0 kW

VE2.3.2.0
DC Machines, 1.0 kW
DC Machines, 1.0 kW

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This experiment/set up contains dangerous goods.
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Description

The experiments are carried out using industrial-design machines. All the test machines possess a special base for connecting the Machine test system 1.0. The testing system can be used to record the characteristics of the machines under test. Power for the machines is supplied either via the mains or by 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

Similar to illustration

LEYBOLD's range of DC motors in the 1.0 kW rating class includes compound-wound machines and universal machines. This allows all the typical varieties such as series-wound, shunt-wound and compound-wound machines to be investigated. The modularly designed experiments convey the fundamentals for motor and generator operation. DC generators operate on the principle of electromagnetic induction. In practice they are seldom used nowadays but they do allow for a fundamental insight into the functioning of electrical machines and are therefore interesting from an educational point of view.

Features

  • In order to protect against overheating, the stator windings of the machines to be tested are equipped with temperature sensors
  • Should overheating occur, the machine test system automatically shuts down the test machine, thus preventing any damage to it.
  • The machines to be tested 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.
  • Machines in the 1 kW rating class have a powerful and realistic operating response
  • In comparison to smaller machines, their characteristics display distinctive features related to the design.

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.

In E2.5.2 Industrial DC drives DC machines are operated using a static converter. Continuing on from the basic experiments, this course investigates the response of the machines under closed-loop current and speed control.

Topics

  • Design and function of DC machines
  • Armature reaction and commutation
  • Series-wound machines
  • Possibilities for changing speed
  • Energy conversion
  • Shunt-wound machines
  • Operation at constant speed
  • Self-excitation
  • Current-voltage characteristics
  • Load characteristics
  • Possibilities for changing speed and adjusting for load
  • Starting and braking
  • Characteristics of generators
  • Power performance

Main components:

Components of equipment sets

1 773260 DC Multifunction Machine 1.0 LD
1 773270 Universal Motor 1.0 LD
1 73310  4  Resistive load 1.0 LD
1 73264  8  Starter 1.0 LD
1 73265  8  Field regulator, motor 1.0 LD
1 73266  8  Field Regulator Generator 1.0 LD
1 745561 Power circuit breaker module LD
1 7732689  8  Machine test system 1.0 LD
1 728421  4  CBM10 MOMO/FCCP LD
1 73106  4  Coupling 0.3 LD
Manuals:
1 775225DE  4  LIT: E2.3.2 DC Machines 1.0 (German) LD
1 775225EN  4  LIT: E2.3.2 DC Machines 1.0 LD
1 531282  4  Multimeter Metrahit Pro LD
Power supply:
1 725862DG DC machine supply 1.0 LD
1 72609  8  Panel frame T130, two-level LD
1 50059  4  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  4  Safety connecting leads, 32 A, yellow/green, set of 10 LD
1 50145  4  Connecting lead 19 A, 50 cm, red/blue, pair LD
additionally required:
PC with Windows 7/8/10
The following material is available for mounting and conversion of machines with the B3 design and a 71 mm shaft  level  at LD.
1 773256  4  Assembly set el. machine base 1.0 short LD
1 773257  8  Assembly set el. machine base 1,0 long LD
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