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Description

Monitoring of the resistance to earth in ungrounded single- and 3-phasevoltage systems.

Technical specifications
Auxiliary voltage: Without
Enclosure design: Switch cabinet
IMD type: AC
Nominal voltage IT system: AC 24 - 500 V
Response value: 10 - 80 kΩ
Response value type: Adjustable
Width: 45 mm
Type: AI 897
Features
  • According to IEC/EN 61557-8
  • 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