Analysis On The Causes Of High Rejection Rate Of Epoxy Resin Casing And Its Solution

Despite this, the scrap rate for epoxy bushing finished products remains relatively high. This, coupled with the losses caused by damage to the vacuum interrupter, has caused significant headaches for many epoxy resin bushing manufacturers. This scrap rate is primarily due to the epoxy resin cast bushing failing to meet insulation requirements. For example, during the one-minute power frequency withstand voltage insulation test for the epoxy bushing manufacturer, the epoxy bushing for transformer insulation exhibited internal discharge sounds or breakdown.