iso685-D-P_D00170_00_M_XXDE/06.2016
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14. 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 fre-
quencies and extraneous DC voltages. When using inverters and dynamic fre-
quency 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 sys-
tems with lower nominal voltages in order to reduce the impact by the ISOME-
TER® on sensitive switching 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 system. 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 conditions in an IT system, continuous insulation monitoring
can be optimised using this profile.
