Measurement of High Voltage and Currents

AC Field Strength Meter

AC Field Strength Meter: AC Field Strength Meter is usually measured by introducing a small fixed capacitance probe into the field area and measuring the induced charge on it. Since the electric field between the plates of the capacitor is proportional to the charge induced on the plates of the capacitor and varies because of […]

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DC Electric Field Strength Meter

DC Electric Field Strength Meter: The DC Electric Field Strength Meter strength E can be measured by using (i) variable capacitor probe or generating voltmeter or (ii) a vibrating plate capacitor. These devices determine the electrical field intensity E by measuring either the induced charges or currents sensed by the electrodes. (a) Variable Capacitor Field

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Generating Voltmeter Principle and Construction

Generating Voltmeter Principle and Construction: High voltage measuring devices employ generating principle when source loading is prohibited (as with Van de Graaff generators, etc.) or when direct connection to the high voltage source is to be avoided. A Generating Voltmeter Principle and Construction is a variable capacitor electrostatic voltage generator which generates current proportional to

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Series Resistance Microammeter

Series Resistance Microammeter: High d.c. voltages are usually measured by connecting a very high resistance (few hundreds of megaohms) in Series Resistance Microammeter as shown in Fig. 7.1. Only the current I flowing through the large calibrated resistance R is measured by the moving coil microammeter. The voltage of the source is given by The

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