insulation monitoring device Vigilohm IM20, 110 to 415VAC supply, Modbus, for standard network

Vigilohm IM20 is an insulation monitoring device (IMD) permanently monitoring ungrounded/IT earthing systems as per IEC 60364 requirements. According to standards, it is recommanded to equip your systems with Insulation Monitoring Devices (IMD). It monitors LV networks up to 600VAC or 480VAC when connected to neutral or to line respectively, and 345VDC. It mesures the system insulation resistance by injecting a low frequency AC current between the network and ground. IM20 is versatile, adapting to networks resistance betwen 100 and 10 MOhm with a 5% accuracy at 10 kOhm and 1 µF. To meet your applications, the device insulation alarm thresholds can be set between 500 and 500kOhm with an optional delay up to 7200s. Once the alarm threshold is breached, it triggers an alarm relayed by 1 standard or fail-safe dry contact, the HMI display or Modbus RS485. The black and white screen can displays insulation resistance from 100 ohms to 10 megohms, capacitance and temporary faults. It contributes to minimizing operational losses, downtimes, people safety risks and installations damages. This IMD benefits installations where continuity of power supply is critical and where unexpected interruptions must be kept to a minimum. The device can be supplied by a 110VAC to 415VAC or a 125VDC to 250VDC source, with 15% tolerance, plus or minus. It monitors AC, DC and ACDC systems of short to medium length with limited disturbance. The relay self-tests automatically to ensure that the monitoring of the ungrounded system remains permanent. Front face ingress protection is IP52, rear IP20 and overvolage category III. It has been designed according to EN/IEC 61557-8 product standard and has Marine certification. It can be DIN rail or flush-mounted to meet your installation, the wiring is facilitated by removable terminals. The HMI design makes it easy for the user to do device configurations, manual test, or to get informed about the device and network status. Vigilohm benefits from over 50 years' experience of insulation monitoring devices design by Schneider Electric. It is installed all over the world in industrial, marine, transportation, power generation or infrastructure sites.