Control monitoring device ISOMETER® IR425-D4

electrical safetyfor medical IT systemsautomatic

Insulation monitoring device for AC and DC IT systems Application control circuits According to IEC 61557-8 Two separately configurable response values Multi-functional LC display The ISOMETER® of the IR425 series is designed to monitor the insulation resistance of un­earthed AC/DC control circuits (IT systems) 0…300 V. DC components existing in AC/DC systems do not influence the operating characteristics. An external supply voltage allows de-energized systems to be monitored too. Insulation monitoring for AC/DC control circuits 0…300 V Two separately adjustable response values Preset function (automatic setting of basic parameters) Connection monitoring system/earth LEDs: Power On, Alarm 1, Alarm 2 Internal/external test/reset button Two separate alarm relays (one changeover contact each) N/O or N/C operation, selectable Fault memory behaviour, selectable Self monitoring with automatic alarm Multi-functional LC display Adjustable response delay Two-module enclosure (36 mm) Push-wire terminal (two terminals per connection)