EP0000954A3 - Methods of and apparatus for controlling capacitance unbalance-to-ground in cables - Google Patents

Methods of and apparatus for controlling capacitance unbalance-to-ground in cables Download PDF

Info

Publication number
EP0000954A3
EP0000954A3 EP78100780A EP78100780A EP0000954A3 EP 0000954 A3 EP0000954 A3 EP 0000954A3 EP 78100780 A EP78100780 A EP 78100780A EP 78100780 A EP78100780 A EP 78100780A EP 0000954 A3 EP0000954 A3 EP 0000954A3
Authority
EP
European Patent Office
Prior art keywords
cables
ground
methods
capacitance unbalance
controlling capacitance
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.)
Granted
Application number
EP78100780A
Other versions
EP0000954B1 (en
EP0000954A2 (en
Inventor
Timothy Stephen Dougherty
William Malcolm Flegal
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of EP0000954A2 publication Critical patent/EP0000954A2/en
Publication of EP0000954A3 publication Critical patent/EP0000954A3/en
Application granted granted Critical
Publication of EP0000954B1 publication Critical patent/EP0000954B1/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
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • G01R31/59—Testing of lines, cables or conductors while the cable continuously passes the testing apparatus, e.g. during manufacture
    • 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
    • H01B13/14—Insulating conductors or cables by extrusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
EP78100780A 1977-08-31 1978-08-30 Methods of and apparatus for controlling capacitance unbalance-to-ground in cables Expired EP0000954B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/829,362 US4174236A (en) 1977-08-31 1977-08-31 Methods of and apparatus for controlling capacitance unbalance-to-ground in cables
US829362 1986-02-14

Publications (3)

Publication Number Publication Date
EP0000954A2 EP0000954A2 (en) 1979-03-07
EP0000954A3 true EP0000954A3 (en) 1979-04-04
EP0000954B1 EP0000954B1 (en) 1981-10-21

Family

ID=25254324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100780A Expired EP0000954B1 (en) 1977-08-31 1978-08-30 Methods of and apparatus for controlling capacitance unbalance-to-ground in cables

Country Status (7)

Country Link
US (1) US4174236A (en)
EP (1) EP0000954B1 (en)
JP (1) JPS5448086A (en)
CA (1) CA1105594A (en)
DE (1) DE2861199D1 (en)
ES (1) ES473000A1 (en)
IT (1) IT1099315B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244897A (en) * 1979-03-22 1981-01-13 Measurex Corporation Method and apparatus to control the density of products produced from an extrusion process
US4262164A (en) * 1979-11-27 1981-04-14 Bell Telephone Laboratories, Incorporated Telecommunications multipair cable
US4412094A (en) * 1980-05-21 1983-10-25 Western Electric Company, Inc. Compositely insulated conductor riser cable
US4340554A (en) * 1980-09-29 1982-07-20 Bardwell Robert G Method and apparatus for extrusion coating of a cable involving guider tip protection from an oversized portion of the cable
US4585603A (en) * 1982-03-15 1986-04-29 Showa Electric Wire & Cable Co., Ltd Method for controlling an extrusion line for foamed insulation cables involving use of a plurality of generated and measured electrical signals
CH645846A5 (en) * 1982-11-15 1984-10-31 Beta Instr Co METHOD AND DEVICE FOR REGULATING A FOAM COATING EXTRUSION METHOD AND CABLE PRODUCED BY THIS METHOD.
GB2130763B (en) * 1982-11-15 1986-05-21 Beta Instr Co Method and apparatus for controlling a cellular foam cable coating extrusion process
US4604497A (en) * 1983-07-28 1986-08-05 Northern Telecom Limited Electrical conductor for telecommunications cable
JP3093518B2 (en) * 1993-06-02 2000-10-03 株式会社神戸製鋼所 Control method of metal wire coating equipment
JPH07153330A (en) * 1993-11-29 1995-06-16 Junkosha Co Ltd Core for coaxial cable, coaxial cable using it, and manufacture thereof
US5814768A (en) * 1996-06-03 1998-09-29 Commscope, Inc. Twisted pairs communications cable
US6140587A (en) * 1997-05-20 2000-10-31 Shaw Industries, Ltd. Twin axial electrical cable
ES2278709T3 (en) * 2001-10-22 2007-08-16 Nexans CABLE WITH AN EXTRUDED EXTERNAL COVER AND METHOD OF MANUFACTURE OF THE CABLE.
FI20160270A (en) * 2016-11-07 2018-05-08 Snow Secure Oy A method of storing snow

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047276B (en) * 1958-03-29 1958-12-24 Siemens Ag Process for the automatic control of the thickness and the capacity of an electrical conductor overmoulded with a thermoplastic material
US3635620A (en) * 1967-02-13 1972-01-18 Gen Cable Corp Apparatus for controlling the dimensions of multiple layers of extruded insulation
DE2405654A1 (en) * 1974-02-04 1975-08-07 Siemens Ag Constant dia. and capacity of insulated cable - is attained by control of dielectric constant in response to dia. and capacity measuring
US3914357A (en) * 1973-01-04 1975-10-21 Western Electric Co Method of monitoring the application of cellular plastic insulation to elongated conductive material
US3973187A (en) * 1973-01-04 1976-08-03 Western Electric Company, Inc. Sensing capacitance and thickness of insulated cable to provide outputs related to weigh and percent voids
US4017228A (en) * 1973-01-04 1977-04-12 Western Electric Company, Inc. Apparatus for monitoring cellular dielectric material
US4068615A (en) * 1976-11-01 1978-01-17 Northern Telecom Limited Control for wire coating line

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047276B (en) * 1958-03-29 1958-12-24 Siemens Ag Process for the automatic control of the thickness and the capacity of an electrical conductor overmoulded with a thermoplastic material
US3635620A (en) * 1967-02-13 1972-01-18 Gen Cable Corp Apparatus for controlling the dimensions of multiple layers of extruded insulation
US3914357A (en) * 1973-01-04 1975-10-21 Western Electric Co Method of monitoring the application of cellular plastic insulation to elongated conductive material
US3973187A (en) * 1973-01-04 1976-08-03 Western Electric Company, Inc. Sensing capacitance and thickness of insulated cable to provide outputs related to weigh and percent voids
US4017228A (en) * 1973-01-04 1977-04-12 Western Electric Company, Inc. Apparatus for monitoring cellular dielectric material
DE2405654A1 (en) * 1974-02-04 1975-08-07 Siemens Ag Constant dia. and capacity of insulated cable - is attained by control of dielectric constant in response to dia. and capacity measuring
US4068615A (en) * 1976-11-01 1978-01-17 Northern Telecom Limited Control for wire coating line

Also Published As

Publication number Publication date
JPS5448086A (en) 1979-04-16
IT1099315B (en) 1985-09-18
IT7827163A0 (en) 1978-08-30
JPS6235208B2 (en) 1987-07-31
DE2861199D1 (en) 1981-12-24
CA1105594A (en) 1981-07-21
EP0000954B1 (en) 1981-10-21
ES473000A1 (en) 1979-03-16
EP0000954A2 (en) 1979-03-07
US4174236A (en) 1979-11-13

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