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isoNAV685-D-B_D00264_03_M_XXEN/06.2017
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Settings
10. Settings
10.1 Settings in the device menu
The settings of the ISOMETER® are explained in the order of the device menu.
10.1
(1.0)Alarm settings
The limit values for the insulation resistances of alarm 1 and alarm 2 can be specified in
the alarm settings menu and can be adapted to the user profile of the ISOMETER®.
A device password is required for entering the settings. You can adjust the following
functions:
10.1
(1.1) Insulation alarm
In the "Insulation alarm" menu, you can set the limits for the ISOMETER® ALARM:
The activation or deactivation of the alarm for
R
an
is illustrated in the following graph:
An alarm will become inactive as soon as +25 % +0.5 kΩ of the set operating value is
exceeded.
10.1
(1.1.1) Alarm 1
For Alarm 1, an insulation resistance of between 1 kΩ…10 MΩ can be set.
10.1
(1.1.2) Fault memory
Automatic reset of inactive faults at the outputs relay 1, relay 2, digital output 1, digital
output 2:
•on
If a fault becomes inactive, the programmed outputs remain
in fault condition until they are reset manually.
•off
If a fault becomes inactive, the programmed outputs auto-
matically change the state.
t
R
an1
Alarm 1
aktiv
Alarm 1
inaktiv
Δ 25 % + 0,5 kΩ
10.1
(1.2) Profile
The ISOMETER® profile is set to "Offline".
10.1
(1.3) System type
The device is set to a 3AC system.
10.1
(1.4) Device
Set the ISOMETER® insulation resistance measurement function to active or inactive:
10.1
(1.5) T(Start)
The ISOMETER® can be operated with a start-up delay of 0…120 seconds. The start-up is
delayed until the initial measurement takes place.
10.1
(1.6) Coupling monitoring
Coupling monitoring (L1, L2, L3 network connection monitoring) is deactivated.
System
leakage
capacitanc
e
Measuring
voltage
Description
Offline
150
μF
± 5 V
For disconnected loads and
frequency converters.
•3AC
3AC system
(refer to
“Connection to a 3(N)AC system/system type 3AC”
•Active
The device is active.
•Inactive
The device DOES NOT measure the insulation resistance, the
message
Device inactive
appears on the display. The
IT system is NOT being monitored!
•off
Coupling monitoring is deactivated.