iso1685DP_D00272_02_M_XXEN/07.2017
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Settings
9. Settings
The settings of the ISOMETER® are explained in the order of the device menu.
9.1
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 adjusted to the profile of the ISOMETER®. If you have acti-
vated the password query in the device menu (refer to
), you must
enter the device password in order to change the settings.
You can adjust the following functions:
9.1
(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
an1
(alarm 1) and
R
an2
(alarm 2) are
illustrated in the following graphic:
An alarm will become inactive as soon as the hysteresis of the set operating value is ex-
ceeded.
9.1
(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.
9.1
(1.1.2) Alarm 2
An insulation resistance of 0.2 kΩ…2 MΩ can be set for alarm 2.
t
R
R
an1
R
an2
Alarm 1
aktive
Alarm 2
aktive
hysteresis
Alarm 1
inaktive
hysteresis
Alarm 2
inaktive
9.1
(1.2) Profile
Adapt the area of application of the ISOMETER® to your system profile. For a description
of the profiles, refer to
“Device profiles” auf Seite 46
The following can be selected:
9.1
(1.3) Fault memory
Automatic reset of inactive faults at the outputs
(relays 11-12-13, 21-22-24, 31-32-34):
•Power circuits
Suitable for most IT systems.
•High capacitance
Suitable for system with high leakage capacitances.
Limit of the measuring range: 200 kΩ
•Inverter > 10 Hz
Suitable for systems with dynamic frequency control by
inverters in the range 10 to 460 Hz.
•Inverter < 10 Hz
Suitable for systems with extremely low frequency control
in the range 1…460 Hz.
•Fast 2000 μF
Suitable for systems with very high leakage capacitances,
e.g. in large-scale photovoltaic systems.
Limit of the measuring range: 50 kΩ
•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.
Содержание ISOMETER iso1685DP
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