Wiring errors commonly cause protection system failures in power supply systems. Testing the wiring during commissioning and after maintenance work is essential for preventing the danger that wiring errors can cause. This is a time-consuming process, as transformer wiring, trip signals, interlocks, remote control technology, and much more soon add up to hundreds of connections within installations. CPOL2 already provides a tried-and-tested, flexible procedure for testing transformer wiring, which – in contrast to the frequently used “battery method” – does not magnetize current transformers due to the DC-free saw-tooth signal. However, as the trend toward more and more protection and remote-control technology continues, the complexity of wiring and challenges are rising along with it. We have developed our CPOL3 polarity checker to assist you in these areas. Like the CPOL2, the device can detect saw-tooth polarity test signals, and now, it can also detect AC and DC signals. Furthermore, CPOL3 even has some additional new features that surpass the proven functionality of its predecessor. SEE AND UNDERSTAND Get a better overview with CPOL3 for wiring tests. Indication when the test signal polarity is correct “Oscilloscope” mode for displaying the signal waveform Indication when the test signal polarity is incorrect Spectrum mode (FFT) for detecting coupled signals 18
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