Operation Manual

42 GMC-I Messtechnik GmbH
4.4 Breakdown Voltage
Step-Voltage Test – DC Charging Test
Voltage is increased up to the limit value (selected maximum test
voltage) over the selected rise time during the breakdown voltage
test. If voltage breakdown occurs before this value is reached,
breakdown voltage U
brk
is displayed.
If the selected test voltage is reached, testing is continued at this
voltage level until the time period selected under “test duration”
has elapsed.
If no breakdown occurs before the selected test duration has
elapsed, the test has been passed, in which case the following
display appears: U
brk
– – –. Breakdown voltage is displayed in all
other cases.
Applications
For the recognition of cracks and holes in the insulation
TEST
Select the Test
MENU
Open the Submenu
Rise
Test Duration
t
ON
t [s]
U
ins
U [V]