NZ510726A - Method of suppressing supersaturation in underground electrical cables by determining ratio of supplied volume of dielectric enhancement fluid with determined absorbed volume of dielectric enhancement fluid - Google Patents

Method of suppressing supersaturation in underground electrical cables by determining ratio of supplied volume of dielectric enhancement fluid with determined absorbed volume of dielectric enhancement fluid

Info

Publication number
NZ510726A
NZ510726A NZ510726A NZ51072699A NZ510726A NZ 510726 A NZ510726 A NZ 510726A NZ 510726 A NZ510726 A NZ 510726A NZ 51072699 A NZ51072699 A NZ 51072699A NZ 510726 A NZ510726 A NZ 510726A
Authority
NZ
New Zealand
Prior art keywords
dielectric enhancement
enhancement fluid
volume
cable
dielectric
Prior art date
Application number
NZ510726A
Inventor
Glen J Bertini
Original Assignee
Utilx Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/400,739 external-priority patent/US6162491A/en
Application filed by Utilx Corp filed Critical Utilx Corp
Publication of NZ510726A publication Critical patent/NZ510726A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/32—Filling or coating with impervious material
    • H01B13/322—Filling or coating with impervious material the material being a liquid, jelly-like or viscous substance

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Insulating Materials (AREA)
  • Testing Relating To Insulation (AREA)
  • Ropes Or Cables (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Insulated Conductors (AREA)

Abstract

A method for enhancing the dielectric properties of an electrical cable having a central stranded conductor encased in a polymeric insulation. The cable defines an interstitial void space (v1) between the strands of the conductor. The volume (v2) of a dielectric enhancement fluid required to be absorbed by the cable to reach a predetermined level of dielectric enhancement is determined. The ratio of (v1/v2) is computed. If the ratio of (v1/v2) is greater than a maximum ratio of 1.4, then a quantity of the dielectric enhancement fluid is diluted with a sufficient quantity of a diluent to produce a mixture of diluent and dielectric enhancement fluid, such that when the volume (v1) of the mixture is supplied to the cable interior, the cable will have been supplied with a volume (v3) of the dielectric enhancement fluid within the mixture such that (v3/v2) is less than 1.4. The diluent is substantially insoluble in the polymeric insulation, has a sufficiently low initial viscosity to enable introduction into the cable interior, and is miscible with the dielectric enhancement fluid.
NZ510726A 1998-09-22 1999-09-22 Method of suppressing supersaturation in underground electrical cables by determining ratio of supplied volume of dielectric enhancement fluid with determined absorbed volume of dielectric enhancement fluid NZ510726A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10138198P 1998-09-22 1998-09-22
US09/400,739 US6162491A (en) 1998-09-22 1999-09-21 Method of suppressing supersaturation in underground electrical cables
PCT/US1999/022025 WO2000017891A1 (en) 1998-09-22 1999-09-22 Method of suppressing supersaturation in underground electrical cables

Publications (1)

Publication Number Publication Date
NZ510726A true NZ510726A (en) 2002-09-27

Family

ID=26798178

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ510726A NZ510726A (en) 1998-09-22 1999-09-22 Method of suppressing supersaturation in underground electrical cables by determining ratio of supplied volume of dielectric enhancement fluid with determined absorbed volume of dielectric enhancement fluid

Country Status (7)

Country Link
EP (1) EP1218894B1 (en)
KR (1) KR100574529B1 (en)
AT (1) ATE357049T1 (en)
AU (1) AU750403B2 (en)
BR (1) BR9914019A (en)
CA (1) CA2345026C (en)
NZ (1) NZ510726A (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372988A (en) * 1979-01-22 1983-02-08 Cable Technology Laboratories, Inc. Extension of cable life
US4299713A (en) * 1979-07-19 1981-11-10 National Distillers And Chemical Corp. Electrical tree and water tree resistant polymer compositions
US4766011A (en) * 1986-12-29 1988-08-23 Dow Corning Corporation Restoring stranded conductor electrical distribution cable
US4961961A (en) * 1987-04-23 1990-10-09 Dow Corning Corporation Silicone water block for electrical cable
US5200234A (en) * 1991-12-16 1993-04-06 Dow Corning Corporation Method for restoring underground electrical cable
US5372841A (en) * 1993-04-20 1994-12-13 Dow Corning Corporation Method for enhancing the dielectrical strength of cable using a fluid mixture

Also Published As

Publication number Publication date
AU750403B2 (en) 2002-07-18
CA2345026C (en) 2008-09-30
EP1218894A1 (en) 2002-07-03
ATE357049T1 (en) 2007-04-15
AU6259899A (en) 2000-04-10
EP1218894A4 (en) 2005-04-13
KR100574529B1 (en) 2006-05-02
BR9914019A (en) 2001-07-03
KR20010079890A (en) 2001-08-22
CA2345026A1 (en) 2000-03-30
EP1218894B1 (en) 2007-03-14

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