Thermal monitoring of low voltage switchgear using thermal ionization detector

Reliable operation of the switchgear is essential for delivery of electric power to the end users. Poor connections and insulation degradation are the two major causes of arc-flash in the switchgear. This paper evaluates the non-intrusive measurement and performance of thermal ionization detector (TID) in the low voltage (LV) air insulated switchgear. The sensitivity analysis of the sensor is done in comparison with thermocouples. Experimental investigation is performed in a climate controlled chamber where bus bars having poor joints are installed. Useful deductions based on measured results, have been discussed in this paper. This particular type of study is nonexistent in the literature. So, it will be remarkably helpful for the researcher and engineers working in the online condition monitoring area.