This article describes the development of a microprocessor-based system, based on four different physical phenomena, for reliable and accurate detection and location of arcing in dry-type transformers. The proposed technique was tested for actual arcing, generated on a 15kVA, 230/115 V Y/Δ transformer enclosed in a 30"×30"×21" metallic enclosure. Some results showing the performance of the detection and location system are presented in the article. The technique can be applied to detect arcing in metal-clad low-voltage/medium-voltage switchgear, drives, GIS (gas insulated switchgear), generator bus-ducts, and other metal-clad electrical apparatus against arcing.
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Sidhu et al. (2001) studied this question.
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