GB1169693A - Improvements in or relating to Electrical Insulation - Google Patents

Improvements in or relating to Electrical Insulation

Info

Publication number
GB1169693A
GB1169693A GB3653265A GB3653265A GB1169693A GB 1169693 A GB1169693 A GB 1169693A GB 3653265 A GB3653265 A GB 3653265A GB 3653265 A GB3653265 A GB 3653265A GB 1169693 A GB1169693 A GB 1169693A
Authority
GB
United Kingdom
Prior art keywords
backing material
area
resin
mica
mica paper
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
GB3653265A
Inventor
Alexander Cattanach Kidd
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.)
English Electric Co Ltd
Original Assignee
English Electric Co 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB3653265A priority Critical patent/GB1169693A/en
Priority to AT792766A priority patent/AT275633B/en
Priority to CH1210966A priority patent/CH449728A/en
Priority to BE685962D priority patent/BE685962A/xx
Publication of GB1169693A publication Critical patent/GB1169693A/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
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica

Abstract

1,169,693. Laminated mica paper. ENGLISH ELECTRIC CO. Ltd. 23 Nov., 1966 [25 Aug., 1965], No. 36532/65. Heading B5N. [Also in Division H1] An electrically insulating material comprises at least one layer of mica paper bonded to a sheet or tape of backing material with a resin bonding agent wherein not more than 5% of the mica platelets are greater than 2 sq. mm. in area, at least 20% are greater than 0À1 sq. mm. in area and at least 95% are greater than 0À01 sq. mm. in area. Preferably 20-50% of the mica platelets are between 0À1 and 2 sq. mm. in area, the backing material is glass cloth, silk, a synthetic fibre fabric or a mixture thereof and the resin is an epoxy resin. The material may comprise a plurality of layers of mica paper bonded between two layers of backing material, optionally with an intermediate layer of backing material. The material may be formed by impregnating the backing material with resin and bonding it to the mica paper sheet for example between heated rollers.
GB3653265A 1965-08-25 1965-08-25 Improvements in or relating to Electrical Insulation Expired GB1169693A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3653265A GB1169693A (en) 1965-08-25 1965-08-25 Improvements in or relating to Electrical Insulation
AT792766A AT275633B (en) 1965-08-25 1966-08-19 Mica paper
CH1210966A CH449728A (en) 1965-08-25 1966-08-23 Mica paper for the production of mica tape, mica sheet or mica foil for electrical insulation purposes
BE685962D BE685962A (en) 1965-08-25 1966-08-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3653265A GB1169693A (en) 1965-08-25 1965-08-25 Improvements in or relating to Electrical Insulation

Publications (1)

Publication Number Publication Date
GB1169693A true GB1169693A (en) 1969-11-05

Family

ID=10389016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3653265A Expired GB1169693A (en) 1965-08-25 1965-08-25 Improvements in or relating to Electrical Insulation

Country Status (4)

Country Link
AT (1) AT275633B (en)
BE (1) BE685962A (en)
CH (1) CH449728A (en)
GB (1) GB1169693A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016128785A1 (en) * 2015-02-10 2016-08-18 Prysmian S.P.A. Fire resistant cable
US10354779B2 (en) * 2017-03-31 2019-07-16 Radix Wire & Cable, Llc Free air fire alarm cable
US11276511B2 (en) 2016-01-26 2022-03-15 Prysmian S.P.A. Fire resistive cable system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016128785A1 (en) * 2015-02-10 2016-08-18 Prysmian S.P.A. Fire resistant cable
US10453588B2 (en) 2015-02-10 2019-10-22 Prysmian S.P.A. Fire resistant cable
AU2015382306B2 (en) * 2015-02-10 2021-01-28 Prysmian S.P.A. Fire resistant cable
US11276511B2 (en) 2016-01-26 2022-03-15 Prysmian S.P.A. Fire resistive cable system
US10354779B2 (en) * 2017-03-31 2019-07-16 Radix Wire & Cable, Llc Free air fire alarm cable

Also Published As

Publication number Publication date
CH449728A (en) 1968-01-15
AT275633B (en) 1969-10-27
BE685962A (en) 1967-02-01

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