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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 621.315.614.6:676.254 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI B
2、S 5626-1:1979 This British Standard, having been prepared under the direction of the General Electrotechnical Engineering Standards Committee, was published under the authority of the Executive Board on 31 January 1979 BSI 01-2000 The following BSI references relate to the work on this standard: Com
3、mittee reference GEL/16 Draft for comment 77/31025 DC ISBN 0 580 10616 0 Cooperating organizations The General Electrotechnical Engineering Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scienti
4、fic and industrial organizations: Associated Offices Technical Committee British Approvals Service for Electric Cables Ltd British Electrical and Allied Manufacturers Association (BEAMA) British Radio Equipment Manufacturers Association British Steel Corporation Department of Energy Electricity Elec
5、tric Cable Makers Confederation Electrical Contractors Association Electrical Contractors Association of Scotland Electrical, Electronic, Telecommunications Plumbing Union Electrical Research Association* Electricity Supply Industry in England and Wales* Electronic Components Industry Federation* En
6、gineering Equipment Users Association Health and Safety Executive Home Office Institution of Electrical Engineers Ministry of Defence* National Coal Board Oil Companies Materials Association Post Office* Telecommunication Engineering and Manufacturing Association (TEMA)* The organizations marked wit
7、h an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Adhesive Tape Manufacturers Association British Paper and Board Industry Federation (PIF) British Plastics Federation Department of Indust
8、ry British Calibration Service Department of Industry National Physical Laboratory Electrical and Electronic and Insulation Association (BEAMA) Rotating Electrical Machines Association (BEAMA) Transmission and Distribution Association (BEAMA) Amendments issued since publication Amd. No.Date of issue
9、Comments 5569March 1987Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1:1979 BSI 01-2000i Contents Page Cooperating organizationsInside front cover National forewordii Introduction1 1Scope1 2Def
10、initions1 3Designation2 4General requirements2 5Thickness2 6Conditions of supply2 Table I3 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1:1979 ii BSI 01-2000 National foreword This Part of
11、 this British Standard is identical with IEC Publication 554-1 “Specification for cellulosic papers for electrical purposes” Part 1:1977 “Definitions and general requirements” including Amendment No. 1 published in 1983. It has been prepared under the direction of the General Electrotechnical Engine
12、ering Standards Committee. Other Parts of BS 5626 are as given under “Cross-references” in this national foreword. It is the intention that BS 5626 will ultimately replace BS 698:1956 “Papers for electrical purposes” and BS 4295:1968 “Capacitor tissue paper”. A decision on withdrawal of those standa
13、rds will be taken at an appropriate stage in the publication, as Part 3 of BS 5626, 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 St
14、andard. Some terminology 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 “BS 5626 deals with”; similarly, “This
15、series will have the three following parts” should be interpreted as “BS 5626 will have the three following Parts”. In clause 1 (“Scope”), the words “This part of the standard” should be interpreted as “This Part of BS 5626” or “This Part of this British Standard”. In connection with the definition
16、“Substance (grammage)”, 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 Commissi
17、on in a proposal to amend the text of the International Standard. Clause 5, line 1: “micrometers” should be read as “micrometres”. Table I, general heading to columns 6 and 7, and asterisked footnote to Table I. “4m/Pa.s” should be read as “4m/(Pa.s)”. Table I, column 7 (“Air permeability. Descripti
18、on”): “ 0.05. u 5.0” should be read as “ 0.05 . u 0.5”. Cross-references International Standarda Corresponding British Standard IEC 554-2:1977BS 5626 Cellulosic papers for electrical purposes Part 2:1979 Methods of test (Identical) Part 3 of IEC 554 (To be published, in a continuing project, as sepa
19、rate specification Sheets each dealing with a specific material or 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 ado
20、pt each IEC Sheet as a dual-numbered Section of Part 3 of BS 5626.) a Undated in the text. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1:1979 BSI 01-2000iii A British Standard does not purport to include all the necessary provisi
21、ons of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 4, an in
22、side back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy,
23、(c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1:1979 BSI 01-20001 Introduction This standard is one of a series which deals with cellulosic papers for electrical purposes. It does not deal with papers containing mo
24、dified cellulose. This series will have the three following parts: 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 requi
25、rements to be fulfilled by cellulosic papers for electrical purposes. 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
26、 is obtained by heavy beating which gives the paper the appearance 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 f
27、rom Manila hemp fibre manila/kraft mixture paper paper made from Manila hemp fibre with the addition of kraft soft-wood pulp manufactured by the sulphate process NOTEIf the furnish is required to contain a definite proportion of Manila hemp fibre, this proportion should be specifically stated in the
28、 enquiry and/or order. kraft capacitor paper a lightweight paper made entirely from soft-wood pulp manufactured by the sulphate process. The pulp is subjected to thorough washing to remove, as far as practicable, the chemicals used in manufacture electrolytic capacitor paper paper for separating ele
29、ctrodes in electrolytic capacitors and for containing the electrolyte air permeability the amount of air passing through the paper, per unit time reduced to unit surface area and unit pressure difference between opposite faces of the paper under specified test conditions apparent density the mass pe
30、r unit area, in grams per square metre, divided by the thickness, in micrometres, and expressed as grams per cubic centimetre breaking length the calculated limiting length of a strip of paper of any uniform width, beyond which, if the strip was suspended by one end, it would break under its own wei
31、ght bursting strength the maximum pressure paper can sustain under conditions specified in the test method central value the middle value of an odd number of test results or the mean of the two middle values of an even number of test results when these results are arranged in ascending order of magn
32、itude Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1:1979 2 BSI 01-2000 crping a process of imparting an irregular close crimp to the paper to increase its thickness and its extensibility in the machine direction crpe paper paper
33、that has been subjected to crping glazed a paper having a lustrous surface finish imparted by an appropriate drying or mechanical finishing process substance (grammage) the mass per unit area expressed in grams per square metre. The term “grammage” has been accepted in ISO to replace the term “subst
34、ance”; however, because of electrical engineering practice of using the word “substance”, it will be used here 3 Designation Papers shall be identified by a type number consisting of a class number followed by a hyphen and the number of the paper on the corresponding specification sheet. The papers
35、are identified as shown in Table I. 4 General requirements All material in any one consignment shall be as consistent as possible and have properties within the limits of this standard throughout the consignment. 5 Thickness Unless specially agreed between purchaser and supplier, the nominal thickne
36、ss in micrometers shall be one of the following: general purpose electrical papers: 15 20 25 50 65 75 100 125 160 200 250; capacitor paper: 5 6 7 7.5 8 9 10 12 15 18 20 25 30; electrolytic capacitor paper: types 4.1 and 4.2: 30 45 60 75 90; type 4.3: 10 12 15. When determined in accordance with Clau
37、se 2 of IEC Publication 554-2, Specification for Cellulosic Papers for Electrical Purposes, Part 2: Methods of Test, the measured thickness shall be within 10 % of the nominal value, unless otherwise stipulated in Part 3 of IEC Publication 554 (under consideration). 6 Conditions of supply The paper
38、shall be placed in a packing which ensures adequate protection during transport, handling and storage. The type, batch reference number, thickness of paper, outer diameter and width of roll, mass of roll and date of manufacture, shall be clearly marked on the outside of each package. Licensed Copy:
39、sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1:1979 BSI 01-20003 Table I IMPORTANT NATIONAL NOTE. See national foreword regarding textual errors in Table I. Class TypeFurther description of kraft insulating paper SymbolDescription Conductivity o
40、f aqueous extract (mS/m) Air permeability (4m/Pa.s) SymbolDescriptionSymbolDescription (1)(2)(3)(4)(5)(6)(7) 1. General purpose electrical paper 1.1 Kraft insulating paper apparent density u 0.75 g/cm3 1 0.75.u 0.85 g/cm3 M 0.05.u 5.0 1.3 Kraft insulating paper apparent density 0.85. u 0.95 g/cm3 1.
41、4 Kraft insulating paper apparent density 0.95 g/cm3 2 4H 0.5 1.5Greaseproof paper 1.6Japanese tissue paperComplete designation is formed by combining the symbols in columns 2, 4 and 6 in the table above according to the following examplea Conductivity of aqueous extract and air permeability symbols
42、 are applicable only for types 1.1 to 1.4. 1.7Manila paper 1.8 Manila/kraft mixture paper 2. Capacitor paper 2.1 Kraft capacitor paper 2.2 Kraft capacitor paper, high reliability 2.3 Kraft capacitor paper, low loss 2.4 Kraft capacitor paper, high reliability, low loss 3. Crpe paper 3.1 Hard, compara
43、tively non-absorbent crped kraft insulating paper 3.2 Soft porous crped kraft insulating paper 4. Electrolytic capacitor paper 4.1 Absorbent separator paper, long fibres 4.2 Absorbent separator paper, short fibres 4.3Non-absorbent paper 5. Special papers NOTEThe parameters defined inTable I are basi
44、c properties required for paper-making purposes. Electrical properties relative to these parameters are further defined in Part 3 of IEC Publication 554 (under consideration). a Example 1.2-2M = apparent density greater than 0.75 and not exceeding 0.85 g/cm3, conductivity over 4 mS/m and air permeab
45、ility “medium” between 0.05 and 0.5 4m/Pa.s. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1:1979 BSI 01-2000 Public
46、ations referred to See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5626-1: 1979 IEC 554-1: 1977 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body respons
47、ible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendme
48、nts or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be foun
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