- Ground Fault Monitoring, Ungrounded
The ISOMETER® isoRW685W-D is a ground-fault monitoring device for IT systems in accordance with IEC 61557-8 for railway applications and has been specifically tested according to DIN EN 50155. It is universally applicable in AC, 3(N)AC, AC/DC and DC systems. AC systems may include extensive DC-supplied loads (such as rectifiers, inverters, variable-speed drives).
- Ordering information
- ISOMETER® for IT AC systems with galvanically connected rectifiers or inverters and for IT DC systems (IT = unearthed systems).
- Nominal system voltage Un expandable via coupling devices
- 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).
- Worldwide remote diagnosis via Internet.
- 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
- UPS systems, battery systems
- Heaters with phase control
- Systems including switched-mode power supplies
- IT systems with high leakage capacitances
Mandatory accessories for ISOMETER® isoRW685W-D
|Type designation||Art. No.|
|A set of screw terminals*||B91067901|
|A set of push-wire terminals||B91067902|
|Enclosure accessories (terminal cover, 2 mounting clips)*||B91067903|
Optional accessories for ISOMETER® isoRW685W-D
|Type designation||Type||Art. No.|
Variants of ISOMETER® isoRW685W-D
|Type||Nominal system voltage range Un||Supply voltage US||Art. No.|
|isoRW685W-D||AC 0…690 V; 1…460 Hz|
DC 0…1000 V
|AC 24…240 V; 50…400 Hz /|
DC 24…240 V
Downloads for ISOMETER® isoRW685W-D