Abstract: The method for performing maintenance of an electric installation comprising at least one electric equipment unit comprises: entry and storing in a database of data representative of an electric installation to be monitored and of data representative of electric equipment settings and parameters, storing of data representative of events in a database so as to constitute an events history, detection of malfunctioning disturbances, analysis of causes of malfunctioning of the electric installation, management of restoration of operation of a part of the installation. Management of restoration of operation comprises monitoring by a decision tree to evaluate a criticality level. The device and the installation comprise means for implementing the method for performing maintenance of the electric installation.

Abstract: The method for monitoring ageing of at least one electric equipment unit comprises: entering and storing ageing computation data by type of equipment, measurement of physical quantities representative of environmental conditions, computation of ageing according to said measurements and to the stored ageing computation data, and communication and/or indication of electric equipment ageing data. Ageing computation in particular concerns the mechanical part and/or wear of electric contacts of an equipment unit, the electronic part of said equipment unit, and/or an electro-magnetic actuator of said electric equipment unit. The device and installation comprise means for implementing the method for monitoring ageing of at least one electric equipment unit.