Transmission Substation Electrician. Lately we've had a lot of discussions on fasteners on Oil filled and gas filled electrical equipment. It seems in most cases no springwasher or Bellville is used to join surfaces that are sealed with an o-ring or groove gasket seal. We use Bellvilles for...
Substation Maintenance Electrician. Recently went on a call-out for a 13.8kV Teritary ground fault. Fuses to the grounding xfmr were not blown but one phase had a high resistance across the fuse, ~100 ohms. Other to phases were 2 ohms. The fuse was changed and the ground went away. But when...
