iso1685DP_D00272_03_M_XXEN/08.2017
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12. Device profiles
Mains frequency
System leakage
capacitance
Measuring
voltage
Description
Power circuits DC, 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.
High capacitance DC, 15…460 Hz 0…500 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 DC, 10…460 Hz 0…150 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 DC, 1…460 Hz 0…150 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.
Fast 2000 μF DC, 15…460 Hz 0…2000 µF ±50 V
For systems with very high leakage capacitances, e.g. in large-scale photovoltaic systems, this profile
ensures correct measurement.
The response value range changes depending on the selected profile. Re-
fer to “Response values for insulation monitoring” auf Seite 50.
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