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