Telemetry in diagnosis of asynchronous motors

To improve operational reliability of electrical machines over a long period of time, the diagnostic tests should be performed. This justifies the monitoring of machines, particularly those which do not have the reserve at the workplace: the power generators, hoisting machines in mines, etc. The issue of monitoring and diagnosis of electrical machines is focused on assessing the technical condition of the mechanical system and the electromagnetic circuit. This article describes the remote monitoring and diagnostics of technical condition of electrical machines. Describes the devices used by Laboratory of Komel to monitor and diagnose electrical machines. Presents selected results of tests performed on electrical machines. In order to run monitoring, GSM network is used with GPRS or Internet data transmission. Diagnostic signals and technical infrastructure for the transmission of measurement data are described in the article.