5. Guard Connection
5-1
5. Guard Connection
Starting with series 16 of the PGK 25, a Guard connection is
provided as an option. With the feature, a variety of measurements
jobs can be performed where the connections for the shield and
current measuring terminal are separately mounted.
In the Guard option, resistors with 1 k
ΩΩ
ΩΩ
Ω / 200W are integrated
in the current measuring lead (461-408) and in the shield
connection of the H.V. lead. These resistors serve for the
protection of the instrument against transient voltages.
The resistors in the connection leads must be checked for
damage after high voltage breakdown of test objects with high
capacity (> 0.5 µF) or heavy mechanical stress.
H.V. connection
General
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