Water tree formation and lifetime estimation in 3.3 kV and 6.6 kV XLPE and PE power cables
- 1 November 1976
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. 95 (6) , 1892-1900
- https://doi.org/10.1109/t-pas.1976.32290
Abstract
Insulation of 3.3 kV and 6.6 kV XLPE and PE cables was found to be mechanically stressed by 20 to 100 kg/cm2during the process of water tree formation. Infrared absorption curves change if water trees are created. A mechanism of the generation of water trees is discussed in detail. Critical values to judge the level of insulation quality are recommended as 0.01 ω. F for electrical resistance and 5% for tan δ. A lifetime curve is presented to estimate remaining lifetime of cables with water trees.Keywords
This publication has 2 references indexed in Scilit:
- Water Trees in Cross-Linked Polyethylene Power CablesIEEE Transactions on Power Apparatus and Systems, 1974
- Mechanism of submicrocrack generation in stressed polymersJournal of Polymer Science Part A-2: Polymer Physics, 1972