Dold Industries Ltd

11 Hamberts Rd. Blackall Ind. Estate
South Woodham Ferrers
GB-Essex, CM3 5UW
AI 897

Insulation monitor

AI 897

Contacts

Nominal voltage

Alarm value

Variant

  • 0001033
  • AI 897 AC45-400HZ 24V 10-80K-OHM
Monitoring of the resistance to earth in ungrounded single- and 3-phasevoltage systems. more

Product description

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

Technical specifications

Type: AI 897
Width: 45 mm
Response value: 10 - 80 kΩ
IMD type: AC
Enclosure design: Switch cabinet
Nominal voltage IT system: AC 24 - 500 V
Response value type: Einstellbar

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