OPERATION
28
The following message is displayed when the unit detects a ground current that exceeds
the GFI threshold.
The high voltage power supply of the instrument is internally referenced to earth ground.
The leakage current measuring circuits monitor only currents that flow through the Return
lead. Therefore, the possibility exists for current to flow directly from the High Voltage
output to earth ground that typically would not be monitored.
GFI is a circuit that monitors the current between the High Voltage output and earth
ground. The GFI’s main purpose is to protect the operator from prolonged exposure to
High Voltage in the case of an accidental contact with the High Voltage lead and earth
ground. If the operator accidentally touches the High Voltage lead and earth ground, the
High Voltage will be shut off immediately and the test aborted.
To Next Page
Loading...
