About this manual
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 IM400, IM400C (fully coated product for harsh environments), IM400L (24...48 Vdc supply voltage), IM400THR (for monitoring medium voltage application), and IM400LTHR (24...48 Vdc supply voltage / 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.
Related documents
| Document | Number |
|---|---|
| Instruction Sheet: Vigilohm IM400, IM400C, and IM400L Insulation Monitoring Device | S1B9007601 |
| Commissioning Guide: Vigilohm IM400 and IM400L Insulation Monitoring Device | 7EN02-0417 |
| Commissioning Guide: Vigilohm IM400C Insulation Monitoring Device | 7EN02-0418 |
| Commissioning Guide: Vigilohm IM400C in M-RW-PV mode | 7EN02-0492 |
| Instruction Sheet: Vigilohm IM400THR and IM400LTHR Insulation Monitoring Device | QGH8990201 |
| Commissioning Guide: Vigilohm IM400THR and IM400LTHR Insulation Monitoring Device | 7EN02-0419 |
| 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 |