Insulation monitor AI 897 Monitoring of the resistance to earth in ungrounded single- and 3-phasevoltage systems. Features . According to IEC/EN 61 557-8 . For single- and 3-phase AC-voltage systems . Adjustable response value RAN from 10 ... 80 kΩ . Without auxiliary supply . Closed circuit operation . Programmable for: - Manual reset (bridge LT1-LT2) - Automatic reset (without bridge) . External reset button on LT1-LT2 . Test button to check the function of the device . External test button can be connected to PT1-PT2 . 1 changeover contact . Width 45 mm Technical specifications Width: 45mm Enclosure design: Switch cabinet IMD type: AC Nominal voltage IT system: AC 24 - 500V Response value type: Adjustable Response value: 10 - 80kΩ Auxiliary voltage: Without Type: AI 897 Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: AI 897 AC45-400HZ 24V 10-80K-OHM Art. No.: 0001033