Operation Manual

GMC-I Messtechnik GmbH 13
2.2.4 Symbols in the User Interface with Feature B1/B2
High-voltage module ready to be switched
on
Life endangering high voltage of up to 5.35 kV
is present at the test probes of the high-
voltage module.
Test completed successfully,
residual voltage less than 25 V
Display of phase angle
The specified limit value I
MAX
has been exceeded.
Current limiting has switched the device to the
“standby” mode.
The last voltage value measured before interrupting current
was exceeded, as well as interrupting current limit value
I
MAX
are displayed
Excessive temperature inside the test instrument
(high-voltage test)
Allow the device to cool for approximately 10 minutes.
2.3 Special Safety Precautions and Instructions
for Feature B1/B2
Precautions for the prevention of unauthorized start-up:
•Key switch
Precautions for the prevention of inadvertent start-up:
• Multiple key operation:
Before test voltage can be applied to the test probes by acti-
vating the trigger at the high-voltage switching pistol, the
START key must be pressed at the primary device.
• Two-hand operation:
Each of the high-voltage pistols is equipped with a trigger.
Both triggers must be activated simultaneously in order to ex-
pose both test probes.
• High-voltage switching pistol (pistol with yellow marking) with
double safety feature:
If the trigger at the high-voltage switching pistol is pulled to the
first point of mechanical resistance, the test probe is exposed.
High-voltage is not applied to the test probe until the trigger is
pulled beyond this point, assuming the device is switched on.
General Safety Precautions
• Integrated signal lamps indicate the switching status of the test
instrument.
• Test probes are electrically isolated from the mains:
This prevents current from flowing from the high-voltage
switching pistol to earth.
• Current limiting in the event of arc-over:
If the current limit value entered as a device parameter is ex-
ceeded due to arc-over, switching to the “standby” mode
takes place automatically.
•When mains voltage is restored after a power failure, switching to
the “standby” mode takes place automatically.
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