ISOMETER® isoNAV685-D

  • Instantaneous tripping 150 ms
  • Inverter disconnection
  • Modbus TCP
  • Tripping on shift voltage

The ISOMETER® isoNAV685-D is a ground-fault monitoring device for IT systems in accordance with IEC 61557-8. It is applicable for use in 3(N)AC systems with nominal system frequency 60 Hz.

Questions? Contact us!

ISOMETER® isoNAV685-D
ISOMETER® isoNAV685-D
  • Instantaneous tripping 150 ms
  • Inverter disconnection
  • Modbus TCP
  • Tripping on shift voltage

The ISOMETER® isoNAV685-D is a ground-fault monitoring device for IT systems in accordance with IEC 61557-8. It is applicable for use in 3(N)AC systems with nominal system frequency 60 Hz.

Questions? Contact us!

Features

  • ISOMETER® for IT AC systems with galvanically connected rectifiers or inverters and for IT DC systems (IT = unearthed systems)
  • Automatic adaptation to the existing system leakage capacitance
  • Combination of AMPPLUS and other profile-dependent measurement methods
  • An adjustable response value for insulation monitoring in the range of 1 kΩ…10 MΩ (factory setting = 5 kΩ) and a response value of 150 V for the DC offset voltage
  • High-resolution graphic LC display for excellent readability and recording of the device status
  • Connection monitoring (monitoring of the measuring lines)
  • Automatic device self test
  • Graphical representation of the insulation resistance over time (isoGraph)
  • History memory with real-time clock (buffer for three days) for storing 1023 alarm messages with date and time
  • Current or voltage output 0(4)…20 mA, 0…400 μA, 0…10 V, 2…10 V (galvanically separated) which is analogous to the measured insulation value of the system
  • Freely programmable digital inputs and outputs
  • Remote setting via the Internet or Intranet (Webserver/Option: COMTRAXX® gateway)
  • Worldwide remote diagnosis via the Internet (made available by Bender Service only)
  • BCOM, Modbus TCP and web server

Applications

  • AC/DC main circuits with directly connected DC components, such as rectifiers, converters, variable-speed drives
  • Systems including switch-mode power supplies
  • Systems including frequency inverters

ISOMETER® isoNAV685-D Variant(s)

TypeNominal system voltage range UnSupply voltage USArt. No.
isoNAV685-DAC 0…690 V; 1…460 Hz/DC 0…1000 VAC 24…240 V; 50…400 Hz /
DC 24…240 V
B91067014

Optional Accessories for ISOMETER® isoNAV685-D

Type designationArt. No.
A set of screw terminals*B91067901
A set of push-wire terminalsB91067902
Enclosure accessories (terminal cover, 2 mounting clips)*B91067903

* included in the scope of delivery
Suitable measuring instruments on request!

Downloads for ISOMETER® isoNAV685-D

NameCategorySizeLanguageTimestampD-/B-Number
TÜV NORD - isox685x und FP200x Certificates 436.6 KB DE2023/10/1111.10.2023
TÜV NORD - isox685x and FP200x Certificates 415.9 KB EN2023/10/1111.10.2023
UKCA - iso685 Declarations of Conformity 140.4 KB 2023/07/1414.07.2023
iso685 CE Declarations of Conformity 87.5 KB 2023/07/1414.07.2023
isoNAV685-D Quickstarts 1.1 MB EN2024/05/2929.05.2024D00215
isoNAV685-D Manuals 2.6 MB EN2019/05/1313.05.2019D00215
isoNAV685-D Datasheets 1.6 MB EN2021/03/1111.03.2021D00215
iso685 Product Brochures 1.8 MB EN2019/05/1313.05.2019D00022