Article | REF: R1035 V2

High voltage measurement

Authors: Alain LEFÈVRE, Jean-Marie POTEL, François BERNOT

Publication date: December 10, 2003

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1. Measurement principle

1.1 Measurement transmission

In the high-voltage field, the voltage between an electrode at ground potential and an electrode at high potential is measured. To protect personnel and equipment, the oscilloscope is placed at a sufficient distance from the high-voltage electrode, while the voltage reducer is necessarily close to it.

A connecting cable must therefore be used to transmit the measurement signal from the foot of the measuring gearbox to the oscilloscope. The measurement signal is a low-energy signal, which is likely to be considerably disturbed by the high-frequency components of the high-voltage signal.

Figure 1 shows...

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Measurement principle