Sökning: "Electrical treeing"

Hittade 2 uppsatser innehållade orden Electrical treeing.

1. 1. A µCT Investigation of the Electrical Breakdown Mechanisms in Mica/Epoxy Machine Insulation

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

   Författare :Carl Saxén; [2017]
   Nyckelord :Breakdown; composite; computed tomography; epoxy; mica; resin; winding; x-ray; μCT;

   Sammanfattning : Mica/Epoxy machine insulation is a composite material of the mineral mica, fibre-glass mesh and epoxy resin. The material is used in motors and generators rated for high voltage, where the material must withstand multiple stresses such as elevated temperatures, mechanical and electrical stresses. LÄS MER

3. 2. Enhanced dielectric AC breakdown strength of polyethylene using voltage stabilizing additives

   Master-uppsats, Lunds universitet/Centrum för analys och syntes

   Författare :Klas Esbo; [2016]
   Nyckelord :cross-linked polyethylene; LDPE; low density polyethylene; polyethylene; voltage stabilizing additives; fast avalanche breakdown; dielectrical breakdown strength; High voltage cable; HVAC; XLPE; Weibull distribution; AC breakdown; materials chemistry; materialkemi; Technology and Engineering; Chemistry;

   Sammanfattning : There is currently a need to increase the voltage level in high voltage transmission and distribution systems in order to transmit power in a more efficient way. However, the insulation of the conductor in high voltage alternating current (HVAC) cables needs to be improved in order to withstand these high voltages. LÄS MER