Three-phase system insulation monitor ISOMETER® iso1685DP/isoHV1685D

medium-voltagefor AC networksAC/DC

Insulation monitoring device for AC 1000 V and DC 1500 V IT systems Application main circuits with connected frequency converters Separately adjustable response values 200 Ω…1 MΩ Display and control function for EDS insulation fault location systems Can be extended to operate as an insulation fault location system The ISOMETER® isoxx1685Dx-x25 is used for insulation monitoring of extensive IT systems. The specially developed measurement method monitors the insulation resistance also in installations where extremely high system leakage capacitances against earth exist due to interference suppression methods. Adaptation to system-related high leakage capacitances also occurs automatically. The ISOMETER® iso1685Dxx generates locating current pulses required for insulation fault location. That allows the localisation of the insulation fault using permanently installed or mobile insulation fault locators. Features 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 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)