Quality Inspection of 40.5kV Switchgear Contact Box Based on X-Ray Digital Imaging Technology
As a key insulating component of high voltage switch cabinet,the contact box mainly plays the role of insulation isolation and connection transition.The partial discharge of the contact box will even cause insulation breakdown,which will seriously affect the reliable operation of the switch cabinet.At present,there is no effec-tive quality inspection standard for contact box products,so the digital X-ray imaging technology is proposed to detect the quality of a 40.5 kV switch box,and the inspection test was carried out in the installation stage.The test results found that 4 out of 12 contact boxes in the same batch had internal defects such as gaps,which are con-sidered unqualified products.The test results also showed that the digital X-ray imaging technology had certain practicability to detect the product quality of the contact box.This research provides a reference for the quality in-spection of other insulating parts in the switch cabinet.
high voltage switchgearcontact boxquality inspectiondigital X-ray imaging technologygap defect
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