12 GMC-I Messtechnik GmbH
2.2 Special Safety Precautions and Instructions for the
PROFITEST 204HP/HV High-Voltage Module
Precautions for the prevention of unauthorized activation:
•Key Switch
Precautions for the prevention of unintentional activation:
• Multiple Key Operation:
It is only possible to activate test voltage with the trigger at the
high-voltage pistol with switch, after pressing the start key at
the basic instrument.
• Two-Hand Operation:
Each of the high-voltage pistols is equipped with its own
trigger. The test probes are only made accessible when both
triggers are pulled and held simultaneously.
• High-Voltage Pistol with Switch (pistol with yellow marking)
Includes double safety feature:
The test probe is made accessible after the trigger at the
high-voltage pistol with switch has been pulled to its initial
mechanical limit stop. High-voltage is not switched to the test
probe until the trigger is pulled beyond this position, assuming
the instrument is in the “ready to activate” state.
General Safety Precautions
• Integrated signal lamps identify the operating status of the test in-
strument.
• Test voltage is electrically isolated from mains power. This
prevents heavy current from flowing to ground via the
high-voltage pistol with switch.
• Current Limiting in the Event of Sparkover:
If the current limiting value entered as a parameter is exceeded
in the event of sparkover, the instrument is automatically
switched to the stand-by mode.
• The instrument is automatically switched to the stand-by mode
when power is restored after a mains failure.
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