Partial discharge Partial discharge In electrical engineering, partial discharge (PD) is a localized dielectric breakdown (DB) of a small portion of a solid or fluid electrical insulation (EI) system under high voltage (HV) stress, which does not bridge the space between two conductors. While a corona discharge (CD) is usually revealed by a relatively steady glow or brush discharge (BD) in air, partial discharges within solid insulation system are not visible. PD can occur in a gaseous, liquid or solid insulating medium. It often starts within gas voids, such as voids in solid epoxy insulation or bubbles in transformer oil. Protracted partial
Wastewater discharge standards in Latin America that produces a contamination on the water. In the case of the discharge over sewer systems the regulation is under the Chapter IV. It's stated that every company must agree with the company that provides the service of recollection of wastewater, the limits of discharge. The limits presented in this article, are those for new companies and for companies in process of identification of the type of body water that the company will discharge. Case description In August 2003, all the mining producers working in the city of Potosí must discharge their waste waters to a specific dike; otherwise they