IR423-D4-2 A-Isometer
Product description
The ISOMETER IR423 monitors the insulation resistance RF of an unearthed AC system from 0...300 V to earth, which is supplied by a mobile power generator in accordance with DIN VDE 0100-551 (VDE 0100-551). The IR423 is suitable for AC systems with operating frequencies ≥ 30 Hz and DC components. The permissible mains leakage capacitance Cemax is 5 μF.
Functions and features:
- Insulation monitoring for mobile power generators AC 0...300 V
- Protective separation with insulation monitoring and disconnection
- W version for increased mechanical stress
- Two separately adjustable response values
- Mains/earth connection monitoring
- Operating LED, alarm LEDs: 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:
- Rated mains voltage: AC 30...460Hz 0...300V
- Rated voltage: 250 V
- Supply voltage: DC/AC 30...460Hz 70...300V
- Response value: 10...200 KOhm
- 2 potential-free alarm relays
- Two alarm LEDs
Applications:
- IEC 60364-7-717, DIN VDE 0100-717 (2005) Electrical installations on vehicles or in transportable units
- DIN VDE 0100-551 (VDE 0100-551), IEC 60364-5-551 Low-voltage power generation systems (mobile generators)
- GW 308 "Mobile power generators for pipeline construction sites 8/00" (DVGW)
- BGI 867 Selection and operation of backup generators on construction and assembly sites