AC Transformer, 0,3

AC Transformer, 0,3
AC Transformer, 0,3

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The experiments are carried out using transformers on training panels in panel frames.


  • Protective measures and electrical safety
  • Set-up of power generation systems according to circuit diagrams
  • Use of commercial measuring instruments, hand-held multimeters, oscilloscopes, measuring interfaces

Transformers are magnetically coupled systems used for transforming AC voltages or matching impedance. Transformers can therefore be used primarily for measurement or generation of electric power. These practical exercises study exclusively transformers used in energy generation. Transformer power ratings can range from a few mVA up to several MVA. The size and design also have an important effect on the transformer ratings. Transformers are regarded as electrical machines even though they contain no moving parts. The windings of three-phase transformers can be connected in a variety of circuit configurations.

This individual equipment set is used to investigate AC transformers. The AC transformer (single-phase transformer) is a standard module which can be used for many applications across the whole of electrical engineering.

The target group is made up of commercial apprentices and students of power engineering. The course offers experiments at an intermediate level for vocational colleges and undergraduate level.


  • Voltage equation and equivalent circuit
  • Measurement without load, with load and with a short circuit
  • Determination of self-inductance, magnetic coupling and leakage
  • Losses, changes in voltage and efficiency

Main components:

Components of equipment sets

1 73397  8  Single-phase transformer 0.3 LD
1 73240 Resistive load 0.3 LD
1 73241 Capacitive load 0.3 LD
1 73242  8  Inductive load LD

Additional recommended:

LEYBOLD DIGITAL  consisting of  the online portal LeyLab (200310) and the Lab Docs Editor (200320).

1 727100 Power Analyser CASSY LD
1 727110  8  Power Analyser CASSY Plus LD
1 524222 * CASSY Lab 2 for Drives and Power Systems LD
Power supply:
1 72685  8  Adjustable transformer 0...260 V LD
1 72609  8  Panel frame T130, two-level LD
2 50059 Safety bridging plugs, black, set of 10 LD
1 500591  8  Safety bridging plugs, yellow/green, set of 10 LD
1 500855  8  Safety connecting leads, 32 A, Set 34 LD
1 500856  4  Safety connecting leads, 32 A, yellow/green, set of 5 LD
additionaly recommended:
PC with Windows 7/8/10

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

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