Hioki IR3455 - Insulation Resistance Measurement; Basis

3.2 Measuring Insulation Resistance
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付録
索引
75
Every time key is pressed, the indi-
cation changes in the order: resistance

current  DAR 1 min/15s  DAR 1 min/30s
 PI  resistance  current  etc.
 PI/DAR  See 4.2 "Displaying PI and DAR"
(page 89).
3.2.6 Insulation Resistance Measurement
Basis
When a high DC voltage is applied to an object under test, a
leakage current flows.
The insulation resistance instrument measures the applied
voltage V and the combined leakage current I and then cal-
culates the insulation resistance R.
Calculation formula R = V/I
I
C and IA gradually decrease after the volt-
age is applied.
Holding data after measurement
If the indication is unstable, press the key. The
average of the measurements is shown.
[< 1.00 nA] means "below 1.00 nA."