About this manual

This manual discusses features of the Vigilohm IM400N and IM400THRN insulation monitoring devices (IMDs) series and provides installation, commissioning, and configuration instructions.

This manual is intended for use by designers, panel builders, installers, system integrators, and maintenance technicians who are related with ungrounded electrical distribution systems featuring insulation monitoring devices (IMDs).

Throughout the manual, the term “IMD” and “device” refers to Vigilohm IM400N and IM400THRN (for monitoring medium voltage application). All differences between the models, such as a feature specific to one model, are indicated with the appropriate model number or description.

This manual assumes you have an understanding of insulation monitoring and are familiar with the equipment and power system in which your device is installed.

Please contact your local Schneider Electric representative to learn what additional training opportunities are available for your devices.

Make sure you are using the most up-to-date version of your device’s firmware in order to access the latest features.

The most up-to-date documentation for your device is available for download from www.se.com.

The following table is profiled. Check the profiling before making any changes.

Related documents

Document Number
Instruction Sheet: Vigilohm IM400N Insulation Monitoring Device GDE30187
Commissioning Guide: Vigilohm IM400N Insulation Monitoring Device 7EN02-0424
Instruction Sheet: Vigilohm IM400THRN Insulation Monitoring Device GDE30186
Commissioning Guide: Vigilohm IM400THRN Insulation Monitoring Device 7EN02-0425
Vigilohm Catalog PLSED310020EN, PLSED310020FR
The IT earthing system: a solution to improve industrial electrical network availability - Application guide PLSED110006EN
Système de liaison à la terre IT - Une solution pour améliorer la disponibilité des réseaux électriques dans l’industrie - Guide d’application PLSED110006FR
System earthings in LV Les schémas des liaisons à la terre en BT (régimes du neutre) Cahier technique n° 172
The IT system earthing (unearthed neutral) in LV Le schéma IT (à neutre isolé) des liaisons à la terre en BT Cahier technique n° 178

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