Measurement of water tree growth by instrumental neutron activation analysis

Crichton, B.H.; Given, M.J.; Farish, O.; Banford, H.M.

doi:10.1088/0022-3727/16/11/003

Cited by 12 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A new method of investigation of water tree development in polymer samples was introduced by Crichton et al 42) . The growth of water trees in polyethylene has been measured by detecting the penetration of ions from solution, using instrumental neutron activation analysis (INAA).…”

Section: Electrical Properties Of Water Treesmentioning

confidence: 99%

Studies on the aging processes of polymers in electrical systems

Mayoux¹

1998

Angew. Makromol. Chem.

View full text Add to dashboard Cite

Section: Electrical Properties Of Water Treesmentioning

confidence: 99%

Studies on the aging processes of polymers in electrical systems

Mayoux¹

1998

Angew. Makromol. Chem.

View full text Add to dashboard Cite

“…In the same study it was shown that the penetration depths were approximately 70 and 100 pm for the zero and uniform field cases. The growth of water trees in polyethylene has been measured by detecting the penetration of ions from solution using Instrumental Neutron Activation Analysis (INAA) [48]. As previously published by different authors, ions were detected far from the source (200-250 pm) but water trees were not.…”

Section: Microstructure Evolutionmentioning

confidence: 99%

On the degradation of insulating materials withstanding electrical stress

Mayoux

2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)

View full text Add to dashboard Cite

considered as an excellent tool for engineers and researchers in this field [4]. Numerous are the An avalanche of physical and Physico-chemical examples of systems whose very existence is phenomena, often self-sustained, lead to the end of life of subordinated to the nature of their insulating an insulating material. The collapse of the insulating role materials, their mixture and the service of a material is greatly due to the electrical field stress.The path leading from the catastrophic situation, the conditions. This is the case of high power breakdown, to its origin is followed in the present report. transformers with paper tapes in mineral oil and A defect, preexisting or created by the in service stresses, an operating stress of 1.5 kV,,/mm. Alternative gives rise to an ionization process in a volume bounded by insulations have been developed among which insulating walls. With time the process does not remain an epoxy resin molded insulation is a non INTRODUCTION 1 0-78034413-9/00/$10.00 2000 IEEE

show abstract

The association between ion-ion interaction in solution and water tree degradation of polymeric electrical insulation

Crichton

Fouracre

1991

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

For aqueous solutions, the relation between ion-ion interaction the ionic activity coefficient and the rate of water tree development is considered. It is argued that a decrease in the activity coefficient may lead to a decrease in tree growth. Experimental results with 0.1 M solutions of LiCl, NaCl, KCl, RbCl, MnCl2, and FeCl3 show agreement with the proposed model. However, results with 0.5 M solutions show that the controlling influence of ion-ion interactions may be offset by the obstructive presence of hydration sheaths.

show abstract

Measurement of water tree growth by instrumental neutron activation analysis

Abstract: The growth of water trees in polyethylene has been measured by detecting the penetration of ions from solution using instrumental neutron activation analysis. The method can accurately quantify water tree growth, something hitherto lacking in the study of polymer insulated power cables.

Cited by 12 publications

References 3 publications

Studies on the aging processes of polymers in electrical systems

Studies on the aging processes of polymers in electrical systems

On the degradation of insulating materials withstanding electrical stress

The association between ion-ion interaction in solution and water tree degradation of polymeric electrical insulation

Contact Info

Product

Resources

About