Load behaviour in DC, 1-phase and 3-phase networks

Load behaviour in DC, 1-phase and 3-phase networks ELM Basic Machines for Low Voltage (E2.1.3.1)
Load behaviour in DC, 1-phase and 3-phase networks
Load behaviour in DC, 1-phase and 3-phase networks ELM Basic Machines for Low Voltage (E2.1.3.1)
Load behaviour in DC, 1-phase and 3-phase networks

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The equipment enables the investigation of the properties of electrical energy in single-phase and three-phase systems. Special attention is focused on the measuring analysis of the physical parameters (voltage, current, phase, power). This makes it an excellent piece of equipment for entry into three-phase technology.

The switchable devices for resistive, inductive and capacitive loads form the core of this equipment. Therefore, it is possible to generate different loads on the three phases and to characterise them.

The measuring instrument Power Analyser CASSY was specially developed for this type of experiment. The vector display for the correlation of current, voltage and associated phase angle as a function of the loads is integrated in this instrument. This real-time representation illustrates the effects of different network loads in a particularly impressive way.

All functions of the Power Analyser CASSY can be operated quickly and directly via the display, the rotary wheel and the buttons on the unit. All settings and measurement results can be saved on the unit and quickly called up again later or simply downloaded.

In addition, the Power Analyser CASSY is fully controllable in real time via RJ45 Ethernet, W-LAN and USB-C interfaces.

These interfaces can be used by the following software:

  • CASSY Lab 2 for drives and energy systems,
  • MATLAB® and LabVIEW ™
  • Lab Docs Editor Advanced

The following integrated servers are available in the Power Analyser CASSY for the local media connection of at least four end devices simultaneously.

For more details, see product data 727110 or 727111 Power Analyser CASSY.

The equipment is equally suitable for pupil and student experiments in the laboratory with low voltage (DC, AC and three-phase current) and - with a mobile trainer - for teacher demonstrations in the classroom or lecture hall. The experiments are carried out according to the 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. The media connection makes the experiments suitable for demonstration in the classroom or a lecture hall.


  • Single-phase system / three-phase system
  • Representation of phases and phase differences (oscilloscope representation and vector diagram) 
  • Ohmic load / Ohm's law 
  • Star connection / delta connection 
  • Influence of inductive load 
  • Influence of capacitive load 
  • Active power, reactive power and apparent power
  • Basics of load compensation

Components of equipment sets

1 773360 Controllable resistive load, 0.3 LD
1 773362 Controllable capacitive load, 0.3 LD
1 773364 Controllable inductive load LD
1 735065  8  Rectifier B6, 3 x 400 V / 10 A LD
1 735095  8  Capacitors 2 x 1000 µF, 385 V LD
1 1160-60070ECT  4  LIT: Loads in DC and AC grids (in English) FB
1 727111 Power Analyser CASSY Plus LD
1 524222 CASSY Lab 2 for Drives and Power Systems LD
Power supply:
1 72675  8  Three-phase terminal unit with RCD LD
1 73391  4  3-phase transformer, 1.0 LD
1 72609  4  Panel frame T130, two-level LD
3 500617  4  Safety cable, 25 cm, brown LD
3 500614  4  Safety experiment cable, 25 cm, black LD
3 5006181  4  Safety cable, 25 cm, grey LD
9 500602  4  Safety experiment cable, 10 cm, blue LD
1 50059  8  Safety bridging plugs, black, set of 10 LD
1 500855  4  Safety experiment cables, 32 A, set of 34 LD
1 500856  4  Safety experiment cables, 32 A, yellow/green, set of 5 LD
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