iso1685DP_D00272_03_M_XXEN/08.2017
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Display
7. Display
7.1 Standard display
During normal operation, the ISOMETER® displays the message OK and below, the cur-
rently measured insulation resistance.
In the bottom line of the display, the set limit values for R(an) are indicated. In the exam-
ple below, R
an1
=40 k and R
an2
=10 k.
The signal quality of the measurement suits the selected profile.
The better the signal quality, the faster and more exact the device can
measure.
The signal quality of the measurement does not suit the selected pro-
file. Select a different measurement method.
Update period between the test pulses
IT system
OK
230 kΩ
R(an) 40kΩ/10kΩ
OK
230 kΩ
EDS off
PGH ON
7.2 Fault indication (active)
An active fault is displayed by The upper part of the display becomes orange and
displays the fault message.
Depending on the type of fault, the LEDs ALARM 1, ALARM 2 or SERVICE are activated.
In the example below, the insulation resistance is still 7 k. Since the values R
an1
=40 k
and R
an2
=10 k are both below the set response value, ALARM 1 and ALARM 2 have been
triggered.
If several fault messages have appeared, you can navigate through the faults using the
and buttons.
If the value falls below R
an1
in a DC system or a DC offset is detected in an AC system, ad-
ditional detailed information regarding the DC offset will be displayed as illustrated
above.
7 kΩ
Insulation fault
7 kΩ
1/4
PGH ON
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