Function
13
isoxx1685Dx-x25_D00272_07_M_XXEN/09.2022
3. Function
3.1 Features
ISOMETER® for AC IT systems with galvanically connected rectifiers or inverters and for DC IT
systems. (IT = unearthed systems)
• Automatic adjustment to high system leakage capacitances, for measuring ranges
see 11. "Alarm messages" on page 74
• Combination of AMP
PLUS
and other profile-specific measurement method
• Separately adjustable response values R
an1
(alarm 1) and R
an2
(alarm 2) for prewarning
and alarm
• High-resolution graphic LC display for excellent readability and recording of the device
status
• Connection monitoring
• Automatic device self test with automatic alarm message in the event of a fault
• Graphical representation of the insulation resistance over time (isoGraph)
• History memory with real-time clock (buffer for 13 days) for storing 1023 alarm messa-
ges with date and time
• Freely programmable digital inputs/outputs
• Remote setting of certain parameters via the Internet (COMTRAXX® gateway)
• Remote diagnosis by the Bender service via the Internet
• RS-485 interface for data exchange with other Bender devices
iso1685DP-425
• Measurement of insulation faults 200 …1 M
• Integrated locating current injector up to 50 mA for insulation fault location
• Display of insulation faults selectively located by EDS systems
• Parameter setting of EDS systems
• Customer-specific texts for each measuring channel via the menu
isoLR1685DP-425
• Measurement of low-resistance insulation faults 20 …100 k
• Integrated locating current injector up to 50 mA for insulation fault location
• Display of insulation faults selectively located by EDS systems
• Parameter setting of EDS systems
• Customer-specific texts for each measuring channel via the menu
isoHV1685D-425
• Measurement of insulation faults 200 …1 M in IT systems with mains voltages
of AC 2000 V and DC 3000 V
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