B.91036402

IR425-D4-2 A-Isometer (AC/DC 0...300 V)

Isolationsüberwachungsgerät für IT-Systeme

Product description

The ISOMETERs of the IR425 series monitor the insulation resistance of unearthed AC/DC control circuits (IT systems) 0...300 V. The DC-fed components in AC/DC systems have no influence on the response behavior. The separate supply voltage also makes it possible to monitor the de-energized system.


Main features:

- Insulation monitoring device for AC and DC IT systems

- Control circuit application

- In accordance with DIN EN 61557-8

- Two separately adjustable response values

- Multifunctional LC display


Features and functions:

- Insulation monitoring for control circuits AC/DC 0...300 V

- Two separately adjustable response values

- Preset function (automatic basic parameterization)

- Mains/earth connection monitoring

- Indicator LEDs for operation, alarm 1, alarm 2

- Internal/external test/reset button

- Two separate alarm relays (one changeover contact each)

- Working/quiescent current selectable

- Fault memory selectable

- Self-monitoring with automatic message

- Multifunctional LC display

- Adjustable response delay

- 2-module housing (36 mm)

- Spring terminal (two terminals per connection)


Technical features:

- Version with screw terminals

- Rated mains voltage: DC/AC 15...460 Hz 0...300 V

- Rated voltage: 250 V

- Supply voltage: DC 70...300 V AC 42...460 Hz 70...300 V

- Response value1...200 KOhm

- 2 potential-free alarm relays

- Two alarm LEDs


Applications:

- AC/DC control circuits in industry, mechanical engineering, power plants, elevators, automation, etc.

- AC/DC control and auxiliary circuits in accordance with DIN EN 60204-1 "Electrical equipment of machines", IEC 60204-1, EN 60204-1

- AC/DC auxiliary circuits in accordance with DIN VDE 0100-725 (VDE 0100-725)

- Smaller AC/DC IT systems, e.g. lighting systems


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