Global Patent Index - EP 1218894 A1

EP 1218894 A1 20020703 - METHOD OF SUPPRESSING SUPERSATURATION IN UNDERGROUND ELECTRICAL CABLES

Title (en)

METHOD OF SUPPRESSING SUPERSATURATION IN UNDERGROUND ELECTRICAL CABLES

Title (de)

VERFAHREN ZUM UNTERDRÜCKEN VON ÜBERSÄTTIGUNG IN ELEKTRISCHEN ERDKABELN

Title (fr)

PROCEDE DE SUPPRESSION DE LA SURSATURATION DANS DES CABLES ELECTRIQUES SOUTERRAINS

Publication

EP 1218894 A1 20020703 (EN)

Application

EP 99949801 A 19990922

Priority

  • US 9922025 W 19990922
  • US 10138198 P 19980922
  • US 40073999 A 19990921

Abstract (en)

[origin: CA2345026A1] A method for enhancing the dielectric properties of an electrical cable havi ng 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 whe n 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 flu id 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.

IPC 1-7

H01B 13/32

IPC 8 full level

H01B 13/32 (2006.01); H01B 7/28 (2006.01); H02G 1/16 (2006.01)

CPC (source: EP)

H01B 13/322 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

AT 357049 T 20070415; AU 6259899 A 20000410; AU 750403 B2 20020718; BR 9914019 A 20010703; CA 2345026 A1 20000330; CA 2345026 C 20080930; EP 1218894 A1 20020703; EP 1218894 A4 20050413; EP 1218894 B1 20070314; KR 100574529 B1 20060502; KR 20010079890 A 20010822; NZ 510726 A 20020927

DOCDB simple family (application)

AT 99949801 T 19990922; AU 6259899 A 19990922; BR 9914019 A 19990922; CA 2345026 A 19990922; EP 99949801 A 19990922; KR 20017003642 A 20010321; NZ 51072699 A 19990922