Tech-Tip 93
12
Released: 6/19/2019
Tech Tips
The upper boom Qualification and Periodic
readings are shown below. Qualification testing
is done on a new unit install or after a major
component such as a boom is replaced.
Periodic testing is done once a year to verify
dielectric integrity of the unit.
For a Category C AC Qualification test, the
reading should be no higher than 1000 µA for 3
minutes at 100 KV.
For a Category C AC Periodic/Maintenance Test
the reading should be no higher than 400 µA for
1 minute at 40 KV.
µA=Microamp
