YOKOGAWA MY600, Руководство пользователя

Страница: 52 / 70

49
IM MY600-01EN
DAR/PI Measurement and 1-Minute Value
Display
The instrument can compute and show the dielectric
absorption ratio (DAR) and polarization index (PI)
automatically during a insulation resistance measurement.
It can show the measured value and DAR value at 1
minute after starting a measurement. After 10 minutes, it
can show the PI value.
The formula and display range are as follows:
Formula:
DAR = Resistance 1 minute after starting/Resistance 15
seconds after starting
PI = Resistance 10 minutes after starting/Resistance 1
minute after starting
Display range 0.00 to 9.99
When the denominator of the above formulas is 0 MΩ, the
values are shown as “no.” If the values exceed the display
range, they are shown as “>9.99.”