Technical Data; Device Profiles - Bender ISOMETER isoRW685W Manual

13. Technical data

13.1 Device profiles

Adjustment to different applications can be carried out very easily by selecting a device profile.
Nominal system
voltage
AC 0...690 V/
Power circuits
DC 0...1000 V
AC 0...230 V/
Control circuits
DC 0...230 V
Generator AC 0...690 V
AC 0...690 V/
High capacitance
DC 0...1000 V
AC 0...690 V/
Inverter > 10 Hz
DC 0...1000 V
AC 0...690 V/
Inverter < 10 Hz
DC 0...1000 V
Customer-specific –
For response times, refer „Device profiles" at the follwing sections.
Switching between profiles
When switching a profile, the value of R
Switching a profile may result in longer measuring times.
53
System
Mains Measurin
leakage
frequency g voltage
capacitance
15...460 Hz 0...150 μF ±50 V
15...460 Hz 0...150 μF ±10 V
50...60 Hz 0...5 μF ±50 V
15...460 Hz 0...1000 μF ±50 V
10...460 Hz 0...20 μF ±50 V
0.1...460 Hz 0...20 μF ±50 V
– – –
is reset.
min
Measuring Response
Description
range values
Main circuits without dynamic frequency changes.
The universal profile is suitable for all systems primarily with constant
0.1 kΩ...20 MΩ 1 kΩ...10 MΩ
mains frequencies and extraneous DC voltages. When using inverters and
dynamic frequency control, select Inverter > 10 Hz or Inverter < 10 Hz.
This profile is used to reduce the measurement voltage to ±10 V in con-
0.1 kΩ...20 MΩ 1 kΩ...10 MΩ trol systems with lower nominal voltages in order to reduce the impact
by the ISOMETER® on sensitive switching elements.
This profile allows the realisation of a very fast measuring time, e.g. as
required for generator monitoring. Furthermore, this profile can be used
0.1 kΩ...20 MΩ 1 kΩ...10 MΩ
to support fast fault location in an IT system. The generator profile is suit-
able for AC systems containing DC components.
For systems with high system leakage capacitances, e.g. ship applica-
0.1 kΩ...20 MΩ 1 kΩ...10 MΩ tions, the impact of system leakage capacitances on the measuring result
can be significantly reduced by selecting this profile.
This profile is used for systems with dynamic frequency control by invert-
0.1 kΩ...20 MΩ 1 kΩ...10 MΩ ers in the range 10 to 460 Hz in order to optimise the measurement with
respect to the measuring time and quality.
For systems involving extremely low-frequency control in the range of up
to 0.1...460 Hz and very low and continuously changing extraneous DC
0.1 kΩ...20 MΩ 1 kΩ...10 MΩ
voltages due to dynamic load conditions in an IT system, continuous
insulation monitoring can be optimised using this profile. *
Enables the Bender service to make customer-specific measurement set-
– – tings. If no settings have been made by the Bender service, the profile has
the same parameters as the "Power circuits" profile.
* Low-frequency system voltages
For very low-frequency systems, the nominal system voltage is reduced in
accordance with the specifications in this chapter .
isoRW685W-D_D00178_04_M_XXEN/02.2019