32
Full-electronic HV-Tester F1-1x Typs
3. MAKEREADY
HV-base load
3.13 Contact monitoring
On the usage of the device in automatic systems, in many cases it is
necessary to check the contact to the test object. One possible method
of performing this check can be to monitor the current flowing through the
test object with the high voltage applied.
For this purpose a base load is connected in parallel with the test object;
if the current flowing does not reach a specific minimum value Imin, the
connection is faulty. The magnitude of the current flowing can be monitored
and evaluated via the interface using the Imin value.
The circuit diagram below (Fig. 3.18) shows the principle of the monitoring
of the minimum current.
Fig. 3.18: Contact monitoring
