iso685-D-B_D00177_05_M_XXEN/07.2017
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13. Device profiles
Adjustment to different applications can be carried out very easily by selecting a device profile.
Response times see
Nominal system
voltage
Mains
frequency
System
leakage
capacitance
Measuring
voltage
Description
Power circuits
AC 0…690 V/
DC 0…1000 V
15…460 Hz
0…150
µF
±50 V
Main circuits without dynamic frequency changes.
The universal profile is suitable for all systems primarily with constant mains frequencies and
extraneous DC voltages. When using inverters and dynamic frequency control, select
Inverter > 10 Hz or Inverter < 10 Hz.
Control circuits
AC 0…230 V/
DC 0…230 V
15…460 Hz
0…150
µF
±10 V
This profile is used to reduce the measurement voltage to ±10 V in control systems with
lower nominal voltages in order to reduce the impact by the ISOMETER® on sensitive switch-
ing elements.
Generator
AC 0…690 V
50…60 Hz
0…5
µF
±50 V
This profile allows the realisation of a very fast measuring time, e.g. as required for generator
monitoring. Furthermore, this profile can be used to support fast fault location in an IT sys-
tem. The generator profile is suitable for AC systems containing DC components.
High capacitance
AC 0…690 V/
DC 0…1000 V
15…460 Hz
0…1000
µF
±50 V
For systems with high leakage capacitances, e.g. ship applications, the impact of leakage
capacitances on the measuring result can be significantly reduced by selecting this profile.
Inverter > 10 Hz
AC 0…690 V/
DC 0…1000 V
10…460 Hz
0…20
µF
±50 V
This profile is used for systems with dynamic frequency control by inverters in the range 10
to 460 Hz in order to optimise the measurement with respect to the measuring time and
quality.
Inverter < 10 Hz
AC 0…690 V/
DC 0…1000 V
1…460 Hz
0…20
µF
±50 V
For systems involving extremely low-frequency control in the range of up to 1…460 Hz and
very low and continuously changing extraneous DC voltages due to dynamic load condi-
tions in an IT system, continuous insulation monitoring can be optimised using this profile.
Customized
–
–
–
–
Allows Bender Service to implement customer-specific measurement settings. If no settings
are made by Bender service, then the profile has the same parameters and technical specifi-
cation as the Powercircuits profile.