Magazine | Issue 1 2024 New features › Displays the True RMS voltage as well as the polarity › “Oscilloscope” mode for displaying the signal waveform › Mode with low input impedance (LoZ) to suppress coupled signals › Viewing angle independent OLED display with high contrast for optimum readability › CPOL3 already displays phase information for future testing software Highly versatile You can combine several aspects of a wiring test using CPOL3 in conjunction with one of our test sets, such as COMPANO 100, CMC 353, or CMC 356: 1 During the test, introduce a saw-tooth test signal on the primary side A or the secondary side B of the current or voltage transformer. Primary injection is possible as current and voltage transformers transfer this signal waveform. 2 If the polarity is correct, the CPLO3 displays a green happy face. You can also display the signal in “oscilloscope” mode, and you will then see a saw tooth that quickly rises and slowly falls. X At this position on the secondary side, there is a wiring error. 3 The wiring error causes a polarity reversal, and CPOL3 displays a sad red face. You can also recognize the incorrect polarity from the reversed signal in “oscilloscope” mode. 4 In addition to the polarity, CPOL3 also shows you the measured voltage on the display. The nearer the load the measurement is taken, the smaller the loop impedance and displayed voltage. This allows you to easily check the terminal assignment by comparing the voltage and roughly determining the load. Don’t miss out! Combining polarity checks with additional information by measuring the voltage and displaying the signals is an effective way of detecting the most common wiring errors. It will shorten your testing time while increasing the safety of your installation. Wiring testing with CPOL3 FIND OUT MORE ABOUT THE CPOL3 HERE omicronenergy.com/cpol3 CT P2 S2 P1 S1 B A 4 3 2 1 X Test set Test switch Relay or meter Load 19
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