Lifecycle Management of Dropout Fuse

Dropout fuses are widely used in distribution network of 10 kilovolts for their outstanding characteristics of simple structure and convenient maintenance. However problems occur after a period of usage, such as erosion of the fuse-carrier contacts, fuse-carrier dropout failure, and fuse-holder porcelain insulator fracture. 190 dropout fuses from 6 different manufacturers were tested. And the results showed that the unqualified components had been the major cause of the faults listed above. In order to improve the quality of dropout fuses, a scheme of lifecycle management was promoted of which adaptive and personalized testing was the core means. And the scheme included three stages covering the whole lifecycle of dropout fuses prior to supply through post installation.