Bender ISOMETER iso1685DP-425 Manual page 30

Settings
8.2 Settings of the device menu
The settings of the ISOMETER® are explained in the order of the device menu.
8.2 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 adjusted to the profile of the ISOMETER®. If you have acti-
vated the password query in the device menu (refer to
must enter the device password in order to change the settings.
You can adjust the following functions:
8.2 (1.1) Insulation alarm
In the Insulation alarm menu, the ISOMETER® limit values for alarm 1 and alarm 2 can be
set. Activation or deactivation of the two alarm levels R
illustrated in the following graphic:
An alarm will become inactive as soon as the hysteresis of the set operating value is ex-
ceeded.
R
R
an1
R
an2
Alarm 1
Alarm 2
aktive
aktive
8.2 (1.1.1) Alarm 1
An insulation resistance of 0.2 kΩ...1 MΩ can be set for alarm 1.
Condition: alarm 1 ≥ alarm 2.
8.2 (1.1.2) Alarm 2
An insulation resistance of 0.2 kΩ...2 MΩ can be set for alarm 2.
30
see "Password" on page 40), you
(alarm 1) and R (alarm 2) are
an1 an2
hysteresis
hysteresis
Alarm 2 Alarm 1 t
inaktive inaktive
Settings
8.2 (1.2) Profile
Adapt the area of application of the ISOMETER® to your system profile. For a description
of the profiles, refer to see "Device profiles" on page
The following can be selected:
•Power circuits Suitable for most IT systems.
Suitable for system with high leakage capacitances.
•High capacitance
Limit of the measuring range: 200 kΩ
Suitable for systems with dynamic frequency control by inverters in
•Inverter > 10 Hz
the range 10 to 460 Hz.
Suitable for systems with extremely low frequency control in the
•Inverter < 10 Hz
range 1...460 Hz.
Suitable for systems with very high leakage capacitances, e.g. in
•Fast 2000 μF
large-scale photovoltaic systems.
Limit of the measuring range: 50 kΩ
8.2 (1.3) Device
Set the ISOMETER® insulation resistance measurement function to active or inactive:
The device is active.
•Active
The device DOES NOT measure the insulation resistance and is dis-
•Inactive
connected from the system to be monitored (system disconnection).
The IT system is NOT being monitored!
The message
and ALARM2 LEDs are lit.
8.2 (1.4) Coupling monitoring
The coupling is monitored at 24-hour intervals. This monitoring function can be activated
or deactivated.
•on Coupling monitoring is activated.
•off Coupling monitoring is deactivated.
47.
Device inactive
appears on the display. The ALARM1
isoxx1685Dx-x25_D00272_05_M_XXEN/04.2018