1、BRITISH STANDARD BS 5626-3.2: 1985 IEC 554-3-2: 1983 Cellulosic papers for electrical purposes Part 3: Specification for individual materials Section 3.2 Capacitor paper IEC title: Specification for cellulosic papers for electrical purposes Part 3: Specifications for individual materials Sheet2: Cap
2、acitor paper UDC 621.315.614.6:676.254:621.319.4BS5626-3.2:1985 This British Standard, having been prepared under the directionof the General Electrotechnical Engineering Standards Committee, was published under the authority ofthe Board of BSI and comes intoeffect on 31 July 1985 BSI 10-1999 The fo
3、llowing BSI references relate to the work on this standard: Committee reference GEL/16 Draft for comment 83/29941 DC ISBN 0 580 14501 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the General Electrotechnical Engineering Standards Commit
4、tee (GEL/-) to Technical Committee GEL/16, upon which the following bodies were represented: Adhesive Tape Manufacturers Association BEAMA Transmission and Distribution Association British Industrial Ceramic Manufacturers Association British Paper and Board Industry Federation (PIF) British Plastics
5、 Federation British Telecommunications Department of Trade and Industry (British Calibration Service) Electrical and Electronic Insulation Association (BEAMA) Electrical Installation Equipment Manufacturers Association (BEAMA) Electricity Supply Industry in England and Wales Electronic Engineering A
6、ssociation ERA Technology Ltd. Ministry of Defence Rotating Electrical Machines Association (BEAMA) Rubber and Plastics Research Association of Great Britain Telecommunication Engineering and Manufacturing Association (TEMA) Amendments issued since publication Amd. No. Date of issue CommentsBS5626-3
7、.2:1985 BSI 10-1999 i Contents Page Committees responsible Inside front cover National foreword ii Introduction 1 1 Scope 1 2 Requirements 1 Table I Requirements for Class2 Capacitor paper 2 Publications referred to Inside back coverBS5626-3.2:1985 ii BSI 10-1999 National foreword This Section of BS
8、5626 has been prepared under the direction of the General Electrotechnical Engineering Standards Committee. It is identical with IECPublication554-3-2:1983 “Specification for cellulosic papers for electrical purposes. Part3: Specifications for individual materials. Sheet2: Capacitor paper” published
9、 by the International Electrotechnical Commission (IEC). Other Parts and Sections of BS5626 are given under “Cross-references” in this national foreword. BS5626 now supersedes BS698:1956, BS4295:1968 and BS5068:1974 which are withdrawn. WARNING NOTE. This British Standard calls for the use of a subs
10、tance that may be injurious to health, i.e. trichlordiphenyl (seeTable I), if adequate precautions are not taken. It refers only to the technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage. Terminology and conventions. The text of the
11、International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. In the introduction, the words “This standard
12、 is one of a series which deals with” should be read as “BS5626 deals with”. Similarly, the words “The series consists of three parts” should be read as “BS5626 has the following three Parts”. Also, in the introduction, for “Sheet” read “Section”. In clause1 “Scope”, the words “This sheet” should be
13、 read as “This Section of BS5626”. Where the words “shall be subject to agreement between supplier and purchaser” appear, e.g. in the “Remarks” column of Table I against “Ash”, this should be taken to indicate that the subject matter concerned is not inherently part of the requirements of the standa
14、rd, but should be included in the purchase contract. The use of polychlorinated biphenyls is covered by EEC Directive 76/769/EEC and subsequent Directives amending it. These Directives do not prohibit the use of polychlorinated biphenyls for primary and intermediate products for further processing i
15、nto other products, which are not prohibited under these EEC Directives. Cross-references International Standards a Corresponding British Standards IEC 554-1:1977 BS 5626 Cellulosic papers for electrical purposes Part1:1979 Definitions and general requirements (Identical) IEC 554-2:1977 BS 5626 Cell
16、ulosic papers for electrical purposes Part2:1979 Methods of test (Identical) IEC 554-3-1:1979 (also referred to as Sheet1of Part3) BS5626 Cellulosic papers for electrical purposes Part3 Specifications for individual materials Section3.1:1981 General purpose electrical paper (Identical) IEC 554-3-3:1
17、982 (also referred to as Sheet3of Part 3) BS 5626 Cellulosic papers for electrical purposes Part3 Specifications for individual materials Section3.3:1982 Crpe paper (Identical) IEC 554-3-4:1980 (also referred to as Sheet4of Part3) BS5626 Cellulosic papers for electrical purposes Part3 Specification
18、for individual materials Section3.4:1980 Electrolytic capacitor paper (Identical) a Undated in the text.BS5626-3.2:1985 BSI 10-1999 iii Additional information. It should be noted that in Table I, as there is no suitable method given in BS5626-2, the required test method for the determination of the
19、dissipation factor for impregnated papers is given in the “Remarks” column. The requirements specified in the “Remarks” column for thickness, electric strength d.c., dissipation factor and, as notes, for conducting paths, are to be regarded as requirements in this British Standard. A British Standar
20、d 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 confer immunity from legal obligations. International Standards a Corresponding British Standards
21、ISO186:1977 b BS 3430:1980 Method for sampling for testing paper and board (Identical) a Undated in the text. b Published by the International Organization for Standardization (ISO). Summary of pages This document comprises a front cover, an inside front cover, pagesi toiv, pages1to6, an inside back
22、 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.iv blankBS5626-3.2:1985 BSI 10-1999 1 Introduction This standard is one of a series which deals with insulati
23、ng cellulosic papers. The series consists of three parts: Part1: Definitions and General Requirements (IEC Publication554-1); Part2: Methods of Test (IEC Publication554-2); Part3: Specifications for Individual Materials. Sheet1: General Purpose Electrical Paper and Sheet, Sheet3: Crpe Paper, and She
24、et4: Electrolytic Capacitor Paper, have already been published. Sheet 2 Class2: Capacitor paper 1 Scope This sheet contains the requirements for capacitor kraft paper: Type2.1: Kraft capacitor paper. Type2.2: Kraft capacitor paper, high reliability. Type2.3: Kraft capacitor paper, low loss. Type2.4:
25、 Kraft capacitor paper, high reliability, low loss. 2 Requirements 2.1 For sampling procedures see ISO Standard186: Paper and Board Sampling for Testing. 2.2 The paper shall comply with the general requirements given in IEC Publication554-1-1: Definitions and General Requirements. 2.3 When tested by
26、 the methods stipulated, the capacitor paper shall comply with the requirements given in Table I. BS 5626-3.2:1985 2 BSI 10-1999 Table I Requirements for Class2 Capacitor paper Property Test method in Part2 (clause) Type Unit Requirements Remarks Thickness 2 All 4m Nominal thickness (4m) Tolerance T
27、he thickness shall be determined according toISO Standard438 (testing pressure100 10 kPa) a precision of1% is required. Each stack shall consist of at least ten sheets and sufficient to produce not less than1254m thickness. For narrow width material the measurements shall be made at approximately eq
28、ual intervals along the central line. Nominal apparent density0.90g/cm 3and over) ( %) Nominal apparent density below0.90g/cm 3 ( %) u 6 6 to u 8 8 10 8 7 7 Apparent density 4 All g/cm 3 The apparent density shall not depart from the nominal value by more than0.05 g/cm 3 Tensile strength expressed a
29、s tensile index 5 All Nm/g 60 minimum Measured in machine direction NOTETo calculate tensile strength and breaking length, use the expressions: where: Y W L = = = = tensile strength (kN/m) tensile index (Nm/g) substance (g/m 2 ) breaking length (km) Moisture content 10 All % 4 to8 Ash 11 All % 0.5 m
30、aximum For absorbent loaded papers the value shall be subject to agreement between supplier and purchaser. pH of aqueous extract 13 All 6.0 to8.0 X YW 10 3 -, L Y 9.81 - = = X BS 5626-3.2:1985 BSI 10-1999 3 Table I Requirements for Class2 Capacitor paper Property Test method in Part2 (clause) Type U
31、nit Requirements Remarks Conductivity of aqueous extract 12 All mS/m 3.0 maximum Chloride content of aqueous extract 14 All mg/kg 5.0 maximum Electric strength d.c 21 2.1 kV/mm Nominal density (g/cm 3 ) Lowest value (minimum) For types2.1 and2.3, nine tests shall be made and no individual reading sh
32、all be lower than the value shown. For types2.2 and2.4,21 tests shall be made and not more than one reading shall be below the20/21 value shown. The central value shall be not less than the value shown. 0.8 1.0 1.1 1.2 W 1.3 20 30 35 40 45 2.2 kV/mm Nominal density (g/cm 3 ) Central value (minimum)
33、20/21 value (minimum) 1.0 1.2 W 1.3 85 110 125 80 100 115 2.3 kV/mm Nominal density (g/cm 3 ) Lowest value (minimum) 0.8 1.0 1.2 20 30 40 2.4 kV/mm Nominal density (g/cm 3 ) Central value (minimum) 20/21 value (minimum) 0.8 1.0 1.17 1.2 W 1.3 55 85 105 110 125 50 80 100 105 115BS 5626-3.2:1985 4 BSI
34、 10-1999 Table I Requirements for Class2 Capacitor paper Property Test method in Part2 (clause) Type Unit Requirements Remarks Dissipation factor (impregnated) Nominal density (g/cm 3 ) Maximum dissipation factor of impregnated paper at ( C) Model wound capacitors shall be used a , three windings be
35、ing tested. Winding, drying and impregnation shall be performed using all normal precautions and good practice of capacitor manufacture. The capacitors, of nominal capacity2 0.54F, shall be wound using aluminium foil of capacitor manufacturing quality (oil free) of width about40 mm, with an edge mar
36、gin of at least5 mm, on a10 mm removable core with ten complete turns of paper before winding in of the foil. Connection shall be made by two tabs of soft tin foil per electrode at ! and # of the winding length. Approximate numbers of turns required will be (inclusive of the initial ten) 25 50 80 10
37、0 120 2.1 1 10 4 0.8 1.0 1.1 1.2 W 1.3 30 35 39 42 46 26 30 33 36 39 26 30 33 36 39 27 32 35 38 41 32 38 41 45 49 2.2 1 10 4 1.0 1.2 W 1.3 35 42 46 30 36 39 30 36 39 32 38 41 38 45 49 2.3 1 10 4 0.8 1.0 1.2 24 29 36 21 26 31 21 26 31 21 26 31 24 29 35 Thickness: Number: 8 150 10 170 12 180 15 190 18
38、4m 200 2.4 1 10 4 0.8 1.0 1.17 1.2 W 1.3 24 29 35 36 42 21 26 31 32 33 21 26 30 31 33 21 26 30 31 35 24 29 34 35 40 After drying and impregnation, the dissipation factor shall be measured in a suitable oven at the temperatures indicated starting at the highest and allowing at least30 min for tempera
39、ture stabilization of the windings at each temperature, using a guarded bridge with a tuned detector, to an accuracy in conformity with Sub-clause7.3 of IEC Publication250: Recommended Methods for the Determination of the Permittivity and Dielectric Dissipation Factor of Electrical Insulating Materi
40、als at Power, Audio and Radio Frequencies including Metre Wavelengths. The measurements shall be made at a potential gradient of15kV/mm calculated on the nominal thickness of the paper. The result at any temperature is the central value of the three measurements. Values are given for trichlordipheny
41、l but another impregnant may be used where appropriate. In this case the limits given may not be applicable and are under consideration. a Using two-layer dielectric.BS 5626-3.2:1985 BSI 10-1999 5 Table I Requirements for Class2 Capacitor paper Property Test method in Part2 (clause) Type Unit Requir
42、ements Remarks Conducting paths 23 (Method2) Maximum count per square meter NOTE 1If the fault count in the first square metre tested is greater than the permitted value but less than6, further equal area shall be tested until either: a) the average count per square metre falls below the permitted v
43、alue or b) six faults have been counted. Only in caseb) will the material be rejectable. NOTE 2Values for other nominal densities shall be established by linear interpolation. NOTE 3Method2 of Clause23 permits a range of time constants for the measuring equipment. The limits given relate to counts m
44、ade with an equipment having a time constant of10 ms. Equipment with other time constants shall be subjected to agreement between supplier and purchaser. Nominal thickness (4m) Nominal density (g/cm 3 ) 0.8 1.0 1.1 1.17 1.2 W 1.3 2.1 m 2 5 6 7 7.5 8 9 10 10 to u 12 12 to u 15 15 to u 18 18 to u 25 6
45、 4 2 1 1 23 22 14 10 5 3 2 49 38 27 19 8 4 3 200 160 110 90 76 57 40 29 13 6 5 105 76 53 39 18 11 7 2.2 m 2 8 10 10 to u 12 12 to u 15 15 to u 18 18 to u 25 12 7 5 4 3 2 43 28 17 8 5 4 55 37 27 18 10 6 2.3 m 2 10 10 to u 12 12 to u 15 15 to u 18 18 to u 25 6 4 2 1 1 14 10 5 3 2 40 29 13 6 5 2.4 m 2
46、8 9 10 10 to u 12 12 to u 15 15 to u 18 18 to u 25 5 3 2 1 1 16 8 5 4 3 2 32 16 14 10 7 5 4 38 21 15 10 6 5 55 38 27 18 10 66 blankBS5626-3.2:1985 BSI 10-1999 Publications referred to See national foreword.BS 5626-3.2: 1985 IEC 554-3-2: 1983 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandar
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