Device overview
Device overview
iso685-D-P_D00170_03_M_XXEN/07.2017
19
4.4 Display elements and device buttons
Display elements
1
ON
The LED "ON" lights when the device is turned on.
The LED "ON" flashes during ISOnet operation if the device is active in the
ISOnet interconnection.
2
The device display shows information regarding the device and the meas-
urements.
Other information is available in the chapter
“Display” from page 37
.
3
PGH ON
The LED "PGH ON" flashes during insulation fault location. It indicates that
the locating current for the insulation fault location is generated.
4
SERVICE
The LED "SERVICE" lights when there is either a device fault or a connection
fault, or when the device is in maintenance mode.
5
ALARM 1
The LED "ALARM 1" lights when the insulation resistance of
the IT system
falls below the set response value
R
an1
.
6
ALARM 2
The LED "ALARM 2" lights when the insulation resistance of the IT system
falls below the set response value
R
an2
.
PGH ON
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