The live working shield has a variety of structural forms, and the withstand voltage test needs to make internal and external electrodes with a high degree of fit according to the structure of the shield. Traditionally, metal aluminum is used for processing and production. However, despite the surface oxidation treatment of aluminum products, they will wear out with the use of time. Once worn, aluminum powder and alumina will fall off the shield during use. After passing the test, conductive powder will be carried on the surface of the shield to reduce the insulation performance of the shield, and the decrease in insulation performance will directly threaten the live operation. Personal safety of personnel.      The shield electrode developed by our company is made of SUS304 stainless steel combined with high-quality conductive cloth materials, which solves the problem of metal powder falling off. At the same time, the conductive cloth is directly used to avoid scratches and damage caused by direct metal contact with the shield.