NDLI: Experimental Investigation of the Influence of Gaseous Defects on Glycerin-Impregnated Multilayer Film Insulation for LTD

Content Provider	IEEE Xplore Digital Library
Author	Chuang Zeng Xiaoquan Zheng
Copyright Year	1973
Abstract	Experimental study of high-purity-glycerin-impregnated multilayer polypropylene (PP) film insulation, wound in laboratory ambient temperature and pressure, was performed to examine the insulation's breakdown behavior under high-voltage impulse with wavefront of 160 ns. The experimental data show that with the existence of distributed visible tiny gaseous defects between film layers, for 100% winding coverage factor, the breakdown field tends to decrease linearly from about 500 kV/mm for single film layer, which is very close to the intrinsic breakdown field of the PP film, to about 330 kV/mm for four film layers. However, this falling tendency of breakdown field becomes mild and then nearly staying as the film layer number (n) increases from 4 to 10, with the ten-layer-film insulation withstanding 20 impulses at the field of 275 kV/mm. Furthermore, for 50%-90% covering factors, the average breakdown field is 254 kV/mm with one-sigma deviation of 51 kV/mm when n ranges from 5 to 8, and by lowering the covering factor from around 80% to 50%, the average breakdown field declines about 10%. The experiment also reveals that if tiny bubbles do not gather together into a long gaseous channel between film layers, the lowest breakdown field is 173 kV/mm, and the flashover field along film layer surface is greater than 15 kV/cm.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	3573
Ending Page	3578
Page Count	6
File Size	1380076
File Format	PDF
ISSN	00933813
Volume Number	42
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electric breakdown Windings Insulators Permittivity Resistors Nonhomogeneous media linear transformer driver (LTD) insulation. Film insulation gaseous defects glycerin impregnation linear transformer driver (LTD) insulation
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The influence of accelerated ageing on the oil impregnated paper

Investigation on transformer oil impedance during breakdown under impulse voltage

Insulation testing of electric windings

Permittivity matching effects on coil section of oil-immersed transformer

Effect of an electric field on copper sulphide deposition in oil-impregnated power transformers

High voltage power transformer insulation design

High breakdown strength, multilayer ceramics for compact pulsed power applications

Dielectric strength of porcelain

High current planar transformer for very high efficiency isolated boost dc-dc converters

Experimental Investigation of the Influence of Gaseous Defects on Glycerin-Impregnated Multilayer Film Insulation for LTD

Similar Documents

The influence of accelerated ageing on the oil impregnated paper

Investigation on transformer oil impedance during breakdown under impulse voltage

Insulation testing of electric windings

Permittivity matching effects on coil section of oil-immersed transformer

Effect of an electric field on copper sulphide deposition in oil-impregnated power transformers

High voltage power transformer insulation design

High breakdown strength, multilayer ceramics for compact pulsed power applications

Dielectric strength of porcelain

High current planar transformer for very high efficiency isolated boost dc-dc converters

Experimental Investigation of the Influence of Gaseous Defects on Glycerin-Impregnated Multilayer Film Insulation for LTD