AC network insulation monitor ISOMETER® IR423

AC/DCDC

Insulation monitoring device for mobile generators Protective separation with insulation monitoring and disconnection According to IEC 60364-5-55 and IEC 61557-8 Two separately configurable response values Multi-functional LC display The ISOMETER® of the IR423 series is designed to monitor the insulation resistance RF of an unearthed AC system of 0…300 V to earth that is supplied by a mobile generator accor­ding to IEC 60364-5-551 / DIN VDE 0100-551 (VDE 0100-551). The IR423 is suitable for AC sys­tems with operating frequencies ≥ 30 Hz as well as for AC systems with directly connected DC circuits. The maximum permissible system leakage capacitance Cemax is 5 F. Features Insulation monitoring for mobile generators AC 0…300 V Protection by electrical separation with insulation monitoring and disconnection Version “W” for protection against high mechanical stress Two separately adjustable response values Connection monitoring system/earth Power On LED, alarm LEDs: 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) Applications IEC 60364-7-717, DIN VDE 0100-717 (2005) Electrical installations in mobile or transportable units DIN VDE 0100-551 (VDE 0100-551), IEC 60364-5-551 Low-voltage generating sets (mobile generators) GW 308 “Mobile Stromerzeuger für Rohrleitungsbaustellen 8/00” (Mobile auxiliary power generators on pipeline site”) (DVGW)