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) with fault locating devices.

Throughout the manual, the term “device” refers to the insulation fault locator device of MFLK1. Throughout the manual, the term “IMD” refers to IM400, IM400L, IM400C. 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 locating and are familiar with the equipment and power system in which your device is installed.

This manual does not provide instructions on how to incorporate device data or perform device configuration using energy management systems or software.

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

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