Relay Test Set Accuracy and Calibration Explained
0.1 class, 0.2% datasheet accuracy and 0.5 class field minimum are three different things. What each means and what a calibration certificate must prove.
calibration
VLF Test Set Verification and Field Calibration
A VLF test set is not only a source of high voltage; it is a measuring instrument. The voltage it reports is the voltage the cable is actually tested at, and the test is valid only if that number, the frequency below it and the shape of the waveform are what the set claims. A […]