Power Analyser CASSY Plus

The Power Analyser CASSY is a combination of potential-free and differential oscilloscope, multimeter, wattmeter, energy analyser and recorder. It was designed in its concept for demonstration and laboratory experiments.

The Power Analyser CASSY has been optimised for the following applications:

Energy grids:

• Voltage and frequency stability
• Load behaviour of networks
• Effect of harmonics

Electrical machines:

• Inrush current of transformers and machines
• Transformation ratio of transformers
• Efficiency of machines

Power electronics:

• Rectifier
• DC/DC converter
• DC/AC converter
• Frequency converter
• Filter

POWER ANALYSER CASSY - IN DETAIL

• Simultaneous measurement of U, I, φu, φ, f and P in 4 channels
• • Instantaneous values U, I and P
  • Averaged values U, I and P
  • RMS values (AC+DC) U and I
  • RMS values (AC) U and I
  • Fundamental wave filters
  • Delta connection adjustment
  • Measuring accuracy U,I is at 0.5%.
  • Frequency response voltage: 100 kHz 3 dB 250 V
  • Frequency response current: 40 kHz 3 dB at 10 A
• Universal connection options
• Automatic or manual measuring range selection
• Support of the measurement software CASSY Lab 2 for drives and power systems 524 222, for computer-aided measurements and simple to highly complex evaluations.
• Formula
• • Electrical power calculation S, P, Q_C and Q_L
  • Electrical work W_S, W and W_Q
  • Resistance calculation R, Z, X_C, X_L, G, Y B_C and B_L
  • Positive sequence component, negative sequence component and zero sequence component in 3-phase systems
  • Time derivative, integral over time, FFT analysis, mean value, histogram, and modelling
  • Drivers allow the data to be evaluated with LabVIEW ™ and MATLAB^®
• Possibility of direct manual operation of the device by means of a rotary selector with cursor keys
• Direct value readings on 9 cm backlit display
• • Display of up to 24 measured values on one display
  • Display of all values for each channel
  • Display of all values in tabular form
  • Display of measured values in a diagram
  • Display of a vector diagram
• Measuring instrument category CAT III 300: allows the use of the measuring instrument from tests with safety extra-low voltage (SELV) via 3-phase systems with or without neutral conductor to tests in power electronics, e.g. link voltage of 700 V DC

  Digital and media connection

  The Machine Test CASSY is fully controllable in real time via the following interfaces:

  • RJ45 Ethernet (IP4 / IP6 networks)
  • WiFi IEEE 802.11 a/b/g/n supports WPA, WPA2, WPA3 and Radius Server
  • USB-C for direct PC connection or for external data carriers, also for simplified configuration.

  These interfaces can be used by the following software, among others.

  • CASSY Lab 2 for drives and energy systems,
  • MATLAB^® and LabVIEW ™ with freely available examples,
  • Lab Docs Editor Advanced / Pro for generating individual experiment instructions in HTML and with JavaScript even without programming experience.

  The following integrated servers are available in the Power Analyser CASSY for the local media connection of up to 3 end devices simultaneously.

  • TC