BS 5626-1-1979 Cellulosic papers for electrical purposes - Definitions and general requirements《电工用纤维素纸 第1部分 定义和一般要求》.pdf
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1、BRITISH STANDARD BS 5626-1: 1979 IEC 554-1: 1977 Incorporating Amendment No.1 Cellulosic papers for electrical purposes Part 1: Definitions and general requirements UDC 621.315.614.6:676.254BS5626-1:1979 This British Standard, having been prepared under the directionof the General Electrotechnical E
2、ngineering Standards Committee, was published under the authority ofthe Executive Board on 31January1979 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference GEL/16 Draft for comment 77/31025 DC ISBN 0 580 10616 0 Cooperating organizations The General Ele
3、ctrotechnical Engineering Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical Committee British Approvals Service for Electric Ca
4、bles Ltd British Electrical and Allied Manufacturers Association (BEAMA) British Radio Equipment Manufacturers Association British Steel Corporation Department of Energy Electricity Electric Cable Makers Confederation Electrical Contractors Association Electrical Contractors Association of Scotland
5、Electrical, Electronic, Telecommunications Plumbing Union Electrical Research Association* Electricity Supply Industry in England and Wales* Electronic Components Industry Federation* Engineering Equipment Users Association Health and Safety Executive Home Office Institution of Electrical Engineers
6、Ministry of Defence* National Coal Board Oil Companies Materials Association Post Office* Telecommunication Engineering and Manufacturing Association (TEMA)* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted
7、 with the preparation of this British Standard: Adhesive Tape Manufacturers Association British Paper and Board Industry Federation (PIF) British Plastics Federation Department of Industry British Calibration Service Department of Industry National Physical Laboratory Electrical and Electronic and I
8、nsulation Association (BEAMA) Rotating Electrical Machines Association (BEAMA) Transmission and Distribution Association (BEAMA) Amendments issued since publication Amd. No. Date of issue Comments 5569 March 1987 Indicated by a sideline in the marginBS5626-1:1979 BSI 01-2000 i Contents Page Cooperat
9、ing organizations Inside front cover National foreword ii Introduction 1 1 Scope 1 2 Definitions 1 3 Designation 2 4 General requirements 2 5 Thickness 2 6 Conditions of supply 2 Table I 3 Publications referred to Inside back coverBS5626-1:1979 ii BSI 01-2000 National foreword This Part of this Brit
10、ish Standard is identical with IEC Publication554-1 “Specification for cellulosic papers for electrical purposes” Part 1:1977 “Definitions and general requirements” including Amendment No.1 published in1983. It has been prepared under the direction of the General Electrotechnical Engineering Standar
11、ds Committee. Other Parts of BS5626 are as given under “Cross-references” in this national foreword. It is the intention that BS5626 will ultimately replace BS698:1956 “Papers for electrical purposes” and BS4295:1968 “Capacitor tissue paper”. A decision on withdrawal of those standards will be taken
12、 at an appropriate stage in the publication, as Part3 of BS5626, of the separate specification Sheets for the individual materials. Terminology and conventions. The text of the International Standard has been approved as suitable for publication, without deviation, as a British Standard. Some termin
13、ology and certain conventions are not identical with those used in British Standards; attention is especially drawn to the following. In the Introduction, the words “This standard is one of a series which deals with” should be interpreted as “BS5626 deals with”; similarly, “This series will have the
14、 three following parts” should be interpreted as “BS5626 will have the three following Parts”. In clause1 (“Scope”), the words “This part of the standard” should be interpreted as “This Part of BS5626” or “This Part of this British Standard”. In connection with the definition “Substance (grammage)”,
15、 there is a movement within the UK paper industry towards adoption of the ISO term “grammage”. NOTETextual errors. When adopting the text of the International Standard, the errors listed below were noticed. They have been reported to the International Electrotechnical Commission in a proposal to ame
16、nd the text of the International Standard. Clause5, line 1: “micrometers” should be read as “micrometres”. Table I, general heading to columns6 and7, and asterisked footnote toTable I. “4m/Pa.s” should be read as “4m/(Pa.s)”. Table I, column7 (“Air permeability. Description”): “0.05.u 5.0” should be
17、 read as“0.05.u 0.5”. Cross-references International Standard a Corresponding British Standard IEC554-2:1977 BS5626 Cellulosic papers for electrical purposes Part2:1979 Methods of test (Identical) Part 3 of IEC 554 (To be published, in a continuingproject, as separate specification Sheets each deali
18、ngwith a specific materialor group of materials; some Sheets are in course of preparation and others under consideration.) BS 5626 Cellulosic papers for electrical purposes Part 3 Specifications for individual materials (provisional title) (It is intended to adopt each IEC Sheet as a dual-numbered S
19、ection of Part3 of BS5626.) a Undated in the text.BS5626-1:1979 BSI 01-2000 iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself c
20、onfer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages1to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated
21、in the amendment table on the inside front cover.iv blankBS5626-1:1979 BSI 01-2000 1 Introduction This standard is one of a series which deals with cellulosic papers for electrical purposes. It does not deal with papers containing modified cellulose. This series will have the three following parts:
22、Part 1: Definitions and General Requirements; Part 2: Methods of Test; Part 3: Specifications for Individual Materials (under consideration). 1 Scope This part of the standard contains the definitions related to and the general requirements to be fulfilled by cellulosic papers for electrical purpose
23、s. 2 Definitions kraft insulating paper paper made entirely from soft-wood pulp manufactured by the sulphate process greaseproof paper paper free from mechanical pulp having a high resistance to penetration by grease. This resistance is obtained by heavy beating which gives the paper the appearance
24、of vegetable parchment japanese tissue paper a lightweight paper characterized by long fibres and a high ratio of tensile strength in the machine direction to tensile strength in the cross-direction manila paper paper made entirely from Manila hemp fibre manila/kraft mixture paper paper made from Ma
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