ISOMETER? isoRW685W-D Insulation Monitoring Device ensures reliable insulation resistance monitoring in IT AC/DC systems, especially for railway applications. Designed to meet IEC 61557-8 and DIN EN 50155 standards, it offers automatic adaptation to leakage capacitance, dual alarm thresholds (1 kΩ…10 MΩ), high-resolution display, and real-time data logging. Ideal for UPS, battery systems, rectifiers, and variable-speed drives with global voltage compatibility up to AC 690 V or DC 1000 V.More
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 profilespecific measurement methods
Two separately adjustable response value ranges of 1 kΩ…10 MΩ for alarm 1 and alarm 2
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 and 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)
Remote diagnosis via the Internet (made available by Bender Service only)
isoData: Continuous uninterrupted data transmission
RS-485/BS (Bender sensor bus) for communication with other Bender devices
BCOM Modbus TCP and web server
AC DC or AC/DC main circuits
AC/DC main circuits with directly connected DC components such as rectifiers converters variable-speed drives
