• 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 AMP^Plus and other profile-specific measurement methods
• Two separately adjustable response value ranges of 1 kΩ…10 MΩ for Alarm 1 and Alarm 2
• High-resolution graphical LC display
• 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
• Freely programmable digital inputs and outputs
• Remote setting via the Internet or Intranet (COMTRAXX® gateway)
• Worldwide remote diagnosis via the Internet (made available by Bender Service only)
• RS-485 interface for data exchange to other Bender devices
   

iso1685DP-425

• measuring insulation faults 200 Ω…1 MΩ
   

isoLR1685Dx-325

• measuring insulation faults 20 Ω…100 kΩ
   

isoHV1685D-425

• measuring insulation faults 200Ω …1MΩ at mains voltages AC 2000 V, DC 3000 V
   

iso1685DP-425 and isoLR1685DP-325

• Locating current injection for selective insulation fault location
• Indication of the insulation faults selectively located by the EDS system
• Parameter setting of EDS systems
• Customer-specific texts for each measuring channel