The front-chopped-wave generator IPG 506 is used for measuring dc spark-over voltage and impulse spark-over voltage of over-voltage protectors according to CCITT / ITU-T, K12.
Dc spark-over voltage:
A linearly rising voltage, rate of rise 100 V/s up to 637.5 V, is connected to the device under test. The spark-over voltage measured is shown in the display.