Results 101 to 110 of about 5,527,883 (197)

Structural design and model testing of the stator for a superconducting synchronous condenser with high-voltage XLPE cable windings

open access: yesZhejiang dianli
Using XLPE (cross-linked polyethylene) cables as stator windings in a superconducting synchronous condenser can significantly increase its voltage rating and enable direct grid connection.
ZHANG Jiancheng   +6 more
doaj   +1 more source

Electrical treeing in XLPE insulation in frequency range between 20 and 500 Hz

open access: yes, 2005
Electrical tree is one of the main reasons for long term degradation of polymeric materials used in high voltage ac applications. In this paper we report an investigation of electrical tree growth characteristics in XLPE samples from a commercial XLPE ...
Tham, C H, Chen, G
core   +1 more source

Polyethylene wear and cup migration of cemented total hip arthroplasty with femoral heads made of oxidized zirconium, steel, or cobalt chromium: a 10-year secondary analysis from a randomized trial using radiostereometry

open access: yesActa Orthopaedica
Background and purpose: We aimed to evaluate polyethylene (PE) wear, cup migration, and clinical outcome over 10 years in total hip arthroplasties (THA) using different articulations. Methods: This is a secondary analysis of 150 patients randomized into
Håkon Greve Johannessen   +11 more
doaj   +1 more source

Electrical Treeing Characteristics in XLPE Power Cable Insulation in Frequency Range between 20 and 500 Hz

open access: yes, 2009
Electrical treeing is one of the main reasons for long term degradation of polymeric materials used in high voltage ac applications. In this paper we report on an investigation of electrical tree growth characteristics in XLPE samples from a commercial ...
Tham, C H, Chen, George
core   +1 more source

Simultaneous space charge and conduction current measurements in solid dielectrics under high dc electric field

open access: yes, 2006
The importance of space charge in solid dielectrics has been recognized for many years and various attempts have been made to map the distribution and assess its influence on the electrical performance of solid dielectrics. Significant development in non-
Lau, W S, Chen, G
core   +1 more source

Space Charge Behaviour at LDPE Interface under AC Electric Stress

open access: yes, 2006
This paper reports on measurements of space charge characteristics in single and two-layer of low-density polyethylene (LDPE) films subjected to an applied voltage with a range of frequencies from dc to 50 Hz.
Xu, Z, Chen, G
core   +1 more source

Space charge measurement and analysis in low density polyethylene films

open access: yes, 2009
The growing requirement of reliability for an insulation system gives researchers greater responsibility to investigate new techniques for monitoring and diagnosing dielectrics subjected to an electric field.
Xu, Zhiqiang
core   +1 more source

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