AC network insulation monitor ISOMETER® isoNAV685-D-B

Modbus

• Offline monitoring • 3 insulation levels are monitored • Modbus TCP • Reduced measuring voltage The ISOMETER® isoNAV685-D-B is an insulation monitoring device for IT systems in accordance with IEC 61557-8. It is universally applicable in de-energised TN, TT or IT systems. Features • ISOMETER® to monitor the insulation resistance in de-energised systems • Automatic adaptation to the existing system leakage capacitance • AMPPLUS measurement method • An adjustable response value in the range 10 kΩ…1 MΩ (factory setting = 50 kΩ) • High-resolution graphic LC display for excellent readability and recording of the device status • Earth connection monitoring • 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 • Freely programmable digital inputs and outputs • Remote setting via the Internet or Intranet (Webserver/Option: COMTRAXX® Gateway) • Worldwide remote diagnosis via the Internet • BCOM, Modbus TCP and web server Applications • Monitoring of de-energised loads and systems