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.
Students carry out the experiments as specified in the printed manual. Hand-held multimeters are used to measure the characteristics of the transformers. Display of current or voltage against time is particularly interesting for three-phase equipment, although it is not essential. If this aspect is not required, then it is possible to dispense with the oscilloscope, isolating amplifier etc. or Sensor-CASSY. In this case multimeters are sufficient for measuring RMS values.
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.
The complete equipment set allows for experiments on all the most important types of transformer in the 300 W rating class.
- 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
Similar to illustration
|733 90||Three-phase transformer 0.3||1|
|733 93||Scott transformer||1|
|733 97||Single-phase transformer 0.3||1|
|733 98||AC toroidal core transformer 0.3||1|
|733 99||AC autotransformer 0.3||1|
|732 40||Resistive load 0.3||1|
|732 41||Capacitive load 0.3||1|
|732 42||Inductive load 0.3/1.0||1|
|531 282||Multimeter Metrahit Pro||3|
|727 12||Power factor meter||1|
|575 231||Probe 100 MHz, 1:1 / 10:1||2|
|735 261||Isolation amplifier, four channel||1|
|524 013S||Sensor-CASSY 2 Starter||1|
|524 013||Sensor-CASSY 2||1|
|726 09||Panel frame T130, two-level||1|
|726 85||Adjustable transformer 0…260 V||1|
|725 442DG||Three-phase voltage supply 400 V/2.5 A||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 2001L||LIT: Transformers (in German) T 10.1||1|
|569 2001S||LIT: Transformers (in German) T 10.1||1|
|569 2002||* LIT: Transformers (in English) T 10.1||1|
Articles marked with * are not essential, we do however recommend them to carry out the experiment.