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V
is controlled so that I = 0.
2
Since V
= V
when I = 0, V
1
2
Based on equation (1), I = 0 when V = 0 (when the measurement
target and the voltage sensor's internal electrode are at the same
potential).
The instrument's voltage sensors detect the minuscule current I , and
the voltage of the voltage sensor's internal electrode is controlled
so that I = 0. The same voltage ( V
voltage ( V
) is generated internally by the sensor.
1
The instrument implements a voltage measurement method that does not
require contact with exposed metal surfaces on the measurement
target by measuring the voltage generated internally by the voltage
sensor ( V
) when V
2
capacitance cancellation method.)
About the Instrument's Voltage Sensors
is measured to obtain V
2
= V
. (This method is known as the coupled
1
2
.
1
) as the measurement target's
2
1
2
3
4
5
7
付
録
索
引
3
Appx.
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