Performing an insulation resistance test, but the voltage does not rise to the set voltage value. (3174)
QUsed instrument: AC Automatic Insulation/Withstanding HiTester 3174<br> Insulation resistance is measured at DC 500 V test voltage, but the voltage only goes up to about 450 V.
In insulation resistance measurement, the voltage is increased until the resistance value stabilizes, but this takes time if the measurement object includes capacitive loads. Capacitive loads may include solar panels and electronic circuit boards. In such cases, try setting the delay time a little longer.