Abstract
The effects of thermal conditioning, under reduced pressure, on
space accumulation in planar LDPE and XLPE samples under DC
stress, have been investigated. The samples were conditioned prior
to voltage application by being held at 80oC for 2-3 days in short
circuit at rotary pump pressure. Some were then cooled to room
temperature over a period of at least 6hr, still under rotary pump
pressure and in short circuit, while others were cooled to room
temperature in less than 1.5hr in the laboratory air. DC fields of
18kV/mm were then applied at room temperature, and space charge
accumulation was monitored as a function of time using the PEA
(Denmark) and LIPP (Australia) techniques. Conditioning did not
prevent space charge accumulation in either the LDPE or XLPE
samples.
Original language | English |
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Title of host publication | 1997 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena |
Place of Publication | Pistcataway |
Publisher | IEEE |
Publication date | 1997 |
Publication status | Published - 1997 |
Event | 1991 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena - Minneapolis, United States Duration: 20 Oct 1991 → 23 Oct 1991 |
Conference
Conference | 1991 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena |
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Country/Territory | United States |
City | Minneapolis |
Period | 20/10/1991 → 23/10/1991 |