MONITORING THE INSULATION SERVING facilities used for electrolysis shop production of aluminum by electrolysis of firing

摘要

The invention relates to a system for constantly monitoring the insulation of a body relative to neighbouring bodies that comprises: a) a CPI (100); b) a first portion (103) of a measuring circuit connecting said body (70) to a first terminal (101) of said CPI; c) a second portion (104, 201, 108, 109) of a measuring circuit for connecting the second terminal (102) of said CPI to each of the adjacent bodies (80, 90), said second portion including at least one relay (201) for alternatively connecting said CPI to a portion (104, 201, 108; and 104, 201, 109) of the measuring circuit, connected to said adjacent body (80 and 90). The CPI alternatively injects a current, upon each switching, into the measuring circuit in order to regularly monitor the insulation of the different portions of an intervention unit to be operated in an electrolysis cell, the measuring circuits being preferably adapted so that a single CPI is used. The system may also include a system for regularly monitoring the power circuits.