Operation Manual

GMC-I Messtechnik GmbH 37
4.2.3 High-Voltage Testing Sequence
Attention!
!
Before initializing any tests, and before enabling the test
equipment, make sure that all means of access to the
danger zone are closed, and that all persons have exited
the danger zone.
Ð Set the key switch to the “I” position.
The test instrument is switched to the “standby” mode.
The green signal lamps are illuminated.
Ð Check the test parameters.
Ð Press the START key.
The test instrument is switched from the “standby” mode to
“ready for operation”. The red signal lamps are illuminated.
START
Attention High-Voltage!
Touc h neither the test probes nor the device under test
during the high-voltage test!
Life endangering high voltage of up to 5.3 kV is present
at the test probes of the high-voltage module!
Ð Position the high-voltage pistols in close proximity to the de-
vice under test.
Ð Pull both triggers, but only pull the trigger at the high-voltage
switching pistol up to the first point of mechanical resistance.
The test probes are enabled.
Ð Establish contact with the electrical circuits.
Ð Pull the trigger of the high-
voltage switching pistol to
the limit stop.
High-voltage is now switched
to the test probes.
Test time is indicated by an
internal beeper which can be
activated or deactivated, and
visually by the timer symbol
(ton = t
R
+ t
D
).
The test continues until test
time (selected rise time plus
test duration) has elapsed:
ton = 000.
Ð For subsequent testing of neighboring circuits, allow the trigger
to return to the first point of mechanical resistance, establish
contact with the next circuit and pull the trigger to the limit stop
once again. Testing is started anew.