Scott transformer, 0.3

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

Objectives

• Protective measures and electrical safety
• Set-up of power generation systems according to circuit diagrams
• Use of a power analyser as a measuring device

This individual equipment set allows for investigation of a Scott transformer. Scott transformers are made by connecting together two different transformers with special windings. They are designed for transformation to and from a two-phase network with a 90° phase-shift to a three-phase network with 120° phase-shift. Its main field of application is measurement and protection technology.

Highlights

The measurements are carried out with a power analyser, which also makes it possible to measure the phase shift between 2 measuring channels. This is needed for the analysis of the different circuits.

Measuring and media system

Power Analyser CASSY

The tests can be carried out with the Power Analyser CASSYs 727101 and 727111 or the machine test CASSY 7731901 in the Power Analyser operating mode.

All functions of the Power Analyser CASSY and Machine Test CASSY can be quickly operated directly via the display, the rotary knob and the buttons on the device. All settings and measurement results can be saved on the device 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.

Get familiar with the operation of the Power Analyser CASSY 727101 and 727111 or the Power Analyser operating mode for the Machine Test CASSY 7731901. Use the operating instructions for this.

Target group

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.

In the following configurations there are further extended experiments with transformers:

• E2.2.1.1 Three-phase transformer
• E2.2.1.3 AC transformer
• E2.2.1.4 AC toroidal core transformer
• E2.2.1.5 AC auto-transformer