Characteristics of space charge formed in a laminated LDPE/EVA dielectric under DC stress
- Kyushu Univ., Kasuga (Japan). Dept. of Energy Conversion
A laser-induced pressure pulse (LIPP) method was used for measuring the space charge distribution of LDPE/EVA laminate dielectrics under dc stress. The constant voltage up to {+-}20 kV was applied to a side of the laminates of 0.5 mm thickness for 30 minutes. The other side is grounded. When the amount of space charge was measured by LIPP, both sides were virtually grounded. Space charge built up in or near the interface between LDPE and EVA was mainly investigated. Positive and negative voltage was applied to the side of LDPE in the laminates. It was clarified that the space charge was larger in case of LDPE negatively biased than in case of LDPE positively biased. The density of the space charge ranged around 1 nC/mm{sup 3}. The formation of interfacial space charge is analyzed.
- OSTI ID:
- 524601
- Report Number(s):
- CONF-960614-; ISBN 0-7803-3531-7; TRN: IM9740%%75
- Resource Relation:
- Conference: 1996 IEEE international symposium on electrical insulation, Montreal (Canada), 16-19 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of Conference record of the 1996 IEEE international symposium on electrical insulation. Volume 1; PB: 475 p.
- Country of Publication:
- United States
- Language:
- English
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