Measurement of sliding electrical contacts instability

The issues related to the assessment of the degree of instability of the sliding electrical contacts of turbogenerators are considered and analyzed. A brief description of the methods for assessing the contact instability (CI) is given and the methods for measuring them are described. A proven and implemented device developed by the authors for measuring the relative instability factor (RIF) of the sliding contact (SC) “PICON” is described. The results of experimental studies of the stability of contacting when changing brush currents and when changing the degree of their pressing are presented.