GB1535840A - Filler composition and its use in water blocked electric cables - Google Patents

Filler composition and its use in water blocked electric cables

Info

Publication number
GB1535840A
GB1535840A GB444276A GB444276A GB1535840A GB 1535840 A GB1535840 A GB 1535840A GB 444276 A GB444276 A GB 444276A GB 444276 A GB444276 A GB 444276A GB 1535840 A GB1535840 A GB 1535840A
Authority
GB
United Kingdom
Prior art keywords
cable
powder
mixture
hydrophobic
jacket
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB444276A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of GB1535840A publication Critical patent/GB1535840A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid

Abstract

1535840 Electric cable NORTHERN TELECOM Ltd 4 Feb 1976 [26 Feb 1975] 04442/76 Heading H1A A cable 20 comprising conductors 12 and a jacket 14 has the interstices within the jacket and between the conductors at least partially filled with a mixture of a hydrophobic and a hydrophilic powder to protect against water entry into and migration along the cable; the hydrophilic powder forms on contact with the water a viscous, non-swelling material. The hydrophobic powder may be a long-chain fatty acid coated calcium carbonate and make up 8 to 30% by weight of the mixture while the hydrophilic powder may be a high molecular weight polyarylamide making up the remainder. Each conductor may be coated with a hydrophobic oil, e.g. a low viscosity paraffin oil. The cable may have a core wrap 22, a metal sheath 24 and a layer 26 of the powder mixture.
GB444276A 1975-02-26 1976-02-04 Filler composition and its use in water blocked electric cables Expired GB1535840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA221,053A CA1005868A (en) 1975-02-26 1975-02-26 Water blocked electric cables

Publications (1)

Publication Number Publication Date
GB1535840A true GB1535840A (en) 1978-12-13

Family

ID=4102395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB444276A Expired GB1535840A (en) 1975-02-26 1976-02-04 Filler composition and its use in water blocked electric cables

Country Status (9)

Country Link
JP (2) JPS51110676A (en)
CA (1) CA1005868A (en)
DE (1) DE2605395C2 (en)
ES (1) ES445557A1 (en)
FR (1) FR2302576A1 (en)
GB (1) GB1535840A (en)
IT (1) IT1055021B (en)
NL (1) NL182993C (en)
SE (2) SE425444B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265672A (en) 1978-11-16 1981-05-05 Walton Basil V E Powdered telephone cable filling compound
GB2164198A (en) * 1984-09-05 1986-03-12 Telephone Cables Ltd Cables
US6654526B2 (en) 2001-12-12 2003-11-25 Alcatel Use of water swellable yarns and particles in gel compound-filled buffer tubes and uniribbon fiber optic cables
US6782171B2 (en) 2001-12-12 2004-08-24 Alcatel Use of yarns with whiskers to improve gel compound flow performance of fiber optic cables
US6859591B2 (en) 2001-12-12 2005-02-22 Alcatel Gel-swellable particles and yarns in gel-filled buffer tubes
US9117566B2 (en) 2013-03-14 2015-08-25 Teledyne Instruments, Inc. Impedance controlled subsea ethernet oil filled hose

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002819A (en) * 1976-06-14 1977-01-11 Northern Electric Company Limited Water blocked electric cables
ZA786576B (en) * 1978-11-22 1980-02-27 South African Inventions Waterproofing or insulated electric cables
FR2456375A1 (en) * 1979-05-11 1980-12-05 Cables De Lyon Geoffroy Delore Sealed multicore cable design and mfr. - has insulator which is organic water absorbing mixture, atomic weights of which are at least 1000
EP0096123B1 (en) * 1982-06-04 1986-10-08 Northern Telecom Limited Powder filled fiber optic cable
DE3118172A1 (en) * 1981-05-08 1982-11-25 Philips Kommunikations Industrie AG, 8500 Nürnberg Longitudinally watertight optical communication cable
JPS597314A (en) * 1982-06-26 1984-01-14 ノ−ザン・テレコム・リミテツド Optical cable and manufacture thereof
EP0107433A3 (en) * 1982-10-21 1985-08-07 Northern Telecom Limited Manufacture of telecommunication cable
JPS6039609A (en) * 1983-08-11 1985-03-01 Dainichi Nippon Cables Ltd Water shielding type optical fiber cable
JPS6090314A (en) * 1983-10-24 1985-05-21 Dainichi Nippon Cables Ltd Water shielding type optical fiber cable
JPS60170811A (en) * 1984-02-15 1985-09-04 Dainichi Nippon Cables Ltd Optical fiber cable
DE19516970A1 (en) * 1995-05-09 1996-11-14 Siemens Ag Electric and optical cable filler with max. swelling power if water enters
US7162137B2 (en) * 2001-06-20 2007-01-09 Ers Company Optical fiber with nano-particle cladding

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2007163B2 (en) * 1970-02-17 1978-07-27 3000 Hannover Longitudinally watertight electrical cable
NL7117321A (en) * 1971-12-17 1973-06-19
BE795126A (en) * 1972-04-01 1973-05-29 Kerpenwerk G M B H & Co MATERIAL FOR SEALING, IN PARTICULAR ELECTRICAL CABLES, LONGITUDINALLY

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265672A (en) 1978-11-16 1981-05-05 Walton Basil V E Powdered telephone cable filling compound
GB2164198A (en) * 1984-09-05 1986-03-12 Telephone Cables Ltd Cables
US6654526B2 (en) 2001-12-12 2003-11-25 Alcatel Use of water swellable yarns and particles in gel compound-filled buffer tubes and uniribbon fiber optic cables
US6782171B2 (en) 2001-12-12 2004-08-24 Alcatel Use of yarns with whiskers to improve gel compound flow performance of fiber optic cables
US6859591B2 (en) 2001-12-12 2005-02-22 Alcatel Gel-swellable particles and yarns in gel-filled buffer tubes
US9117566B2 (en) 2013-03-14 2015-08-25 Teledyne Instruments, Inc. Impedance controlled subsea ethernet oil filled hose

Also Published As

Publication number Publication date
NL7601435A (en) 1976-08-30
SE453442B (en) 1988-02-01
ES445557A1 (en) 1977-06-01
IT1055021B (en) 1981-12-21
NL182993B (en) 1988-01-18
FR2302576A1 (en) 1976-09-24
SE8008570L (en) 1980-12-05
JPS51110676A (en) 1976-09-30
FR2302576B1 (en) 1981-11-06
JPS6029778Y2 (en) 1985-09-07
SE425444B (en) 1982-09-27
NL182993C (en) 1988-06-16
SE7601797L (en) 1976-08-27
DE2605395C2 (en) 1982-08-12
JPS5995523U (en) 1984-06-28
DE2605395A1 (en) 1976-09-09
CA1005868A (en) 1977-02-22

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Legal Events

Date Code Title Description
476 Application for correction of clerical errors now open to opposition (sect. 76/1949)
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee