1、BRITISH STANDARD BS 5664-3.11: 1995 IEC 455-3-11: 1988 Solventless polymerisable resinous compounds used for electrical insulation Part 3: Specifications for individual materials Section 3.11 Epoxy resin-based coating powders (Implements CENELEC HD 307.3.11 S1:1990)BS5664-3.11:1995 This British Stan
2、dard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comes into effect on 15 September1995 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference GEL/15/3 Draft annou
3、nced in BSI News April 1995 ISBN 0 580 24427 X Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee GEL/15, Insulating material, to Subcommittee GEL/15/3, Material specifications, upon which the following bodies were represent
4、ed: Adhesive Tape Manufacturers Association BEAMA Capacitor Manufacturers Association British Rubber Manufacturers Association Ltd. Covered Conductors Association Department of Trade and Industry (National Physical Laboratory) Diamond Fibre Co. Limited ERA Technology Ltd. Mica Trade Club Ministry of
5、 Defence Paper Federation of Great Britain Royal Society of Chemistry Amendments issued since publication Amd. No. Date CommentsBS5664-3.11:1995 BSI 10-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Introduction 3 1 Scope 3 2 Designation 3 3 Requiremen
6、ts 3 Table I General requirements for the coating after cure 4 List of references Inside back coverBS5664-3.11:1995 ii BSI 10-1999 National foreword This Section of BS5664 has been prepared by Technical Committee GEL/15. It is identical with IEC455-3-11:1988, Specification for solventless polymerisa
7、ble resinous compounds used for electrical insulation Part 3: Specifications for individual materials Sheet 11: Epoxy resin-based coating powders, published by the International Electrotechnical Commission (IEC) and endorsed by the European Committee for Electrotechnical Standardization (CENELEC) as
8、 HD307.3.11 S1. 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 confer immunity from legal obligations. Cross-references Publicat
9、ions referred to Corresponding British Standard IEC 216-2 BS 5691 Guide for the determination of thermal endurance properties of electrical insulating materials Part 2:1979 List of materials and available tests (Identical) BS 5664 Solventless polymerisable resinous compounds used for electrical insu
10、lation IEC 455-1 Part 1:1978 Definitions and general requirements (Identical) Part 2: Methods of test IEC 455-2-2:1984 Section 2.2 Coating powders (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theHDtitle page, pages2 to4, an inside back cove
11、r 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.DOCUMENT DHARMONISATION HARMONISERUNGSDOKUMENT HD 307.3.11 S1 December 1990 UDC 621.316.6:678.686:620.1 Descriptor
12、s: Solid electrical insulation, solventless polymerisable resinous compounds, epoxy resin-based powders English version Specification for solventless polymerisable resinous compounds used for electrical insulation Part 3: Specifications for individual materials Sheet 11: Epoxy resin-based coating po
13、wders (IEC 455-3-11:1988) Spcification relative aux composs rsineux polymrisables sans solvant utiliss comme isolants lectriques Troisime partie: Spcifications pour les matriaux particuliers Feuille 11: Poudres de revtement base de rsines poxydes (CEI455-3-11:1988) Bestimmung fr lsemittelfreie hrtba
14、re Reaktionsharzmassen fr die Elektroisolierung Teil3: Anforderungen an einzelne Werkstoffe Blatt11: Beschichtungspulver auf Basis von Epoxidharz (IEC455-3-11:1988) This Harmonization Document was approved by CENELEC on1990-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Reg
15、ulations which stipulate the conditions for implementation of this Harmonization Document on a national level. Up-to-date lists and bibliographical references concerning national implementation may be obtained on application to the Central Secretariat or to any CENELEC member. This Harmonization Doc
16、ument exists in three official versions (English, French, German). CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Ki
17、ngdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1990 Copyright reserved to CENELEC members Ref. No. HD307.3.11 S1:1990 EBS5
18、664-3.11:1995 BSI 10-1999 2 Foreword This Harmonization Document was approved by CENELEC on1 December1990. The following dates were fixed: latest date of announcement of the HD at national level (doa) 1991-06-01 latest date of publication of a harmonized national standard (dop) 1991-12-01 latest dat
19、e of withdrawal of conflicting national standards (dow) 1991-12-01BS5664-3.11:1995 BSI 10-1999 3 Introduction This standard is one of a series which deals with solventless polymerisable resinous compounds used for electrical insulation. The series consists of the following three parts: Part 1: Defin
20、itions and general requirements (IEC Publication455-1); Part 2: Methods of test (IEC Publication455-2); Part 3: Specifications for individual materials. 1 Scope This sheet11 of Part3 of the standard contains the general and special requirements for thermosetting epoxy resin-based coating powders bei
21、ng applied by coating processes such as fluidized air bed, powder spraying and electrostatic coating. The base of the polymer in the composition of the three types is epoxy resin. 2 Designation The products supplied according to this standard shall be classified as: Accordingly the three products sh
22、all be designated: 3 Requirements 3.1 General requirements All materials in a consignment shall comply with the requirements of IEC Publication455-1, as well as with the requirements of Table I of this sheet according to the respective type. 3.2 Special requirements The following properties accordin
23、g to the test listed in Section1: Tests for materials before cure, of IECPublication455-2-2 shall be subject to agreement between supplier and user. 3.3 Conditions of supply The coating powders should be supplied in dry containers which ensure adequate protection against humidity during transport an
24、d storage. Each container shall be marked with: the suppliers/manufacturers name or trade mark; the coating designation according to Clause2; the mass of the powder content in the container; the recommended minimum application temperature; the batch number; the date by which the resinous coating pow
25、der should be used; the maximum storage temperature; any national requirements for marking packages containing hazardous materials. 3.4 Thermal endurance When required by the purchaser the manufacturer shall provide evidence that when tested in accordance with the following test conditions and instr
26、uctions of IEC Publications216-1,216-2,216-3 and216-4 the appropriate coating powder types have a temperature index of not less than130. Type EP-1: Rigid coating after cure to be used where high scratch hardness and superior cut-through resistance are required. Type EP-2: General purpose coating wit
27、h medium-rigid or semi-flexible properties. Type EP-3: Flexible coating after cure to be used where high impact strength and superior adhesion between the coating and the supporting metal is required. for the rigid-coating type: IEC455-3/11-EP-1 for the general-purpose type: IEC455-3/11-EP-2 for the
28、 flexible-coating type: IEC455-3/11-EP-3. Properties Test methods in IEC Publication455-2-2 Sub-clause Bulk density 1.1 Particle size distribution 1.3 (1.3.1 or1.3.2) Softening temperature 1.4 Gel time 1.5 Non-volatile matter content 1.6 End-point criterion: loss of mass Three test specimens of the
29、same steel plate as test specimen Type A of Sub-clause2.1 of IEC Publication455-2-2, in an area dimension 70mm 70mm the coating thickness being250 504m. The given number of test specimens counts for each exposure temperature. End-point:10% related to the mass of coating only.BS5664-3.11:1995 4 BSI 1
30、0-1999 Recommended exposure temperatures: 160 C, 180 C and200 C. 3.5 Preparation of test specimens Test specimens shall be prepared in accordance with Sub-clause2.1 of IEC Publication455-2-2 and in accordance with the instructions of the manufacturer for the curing temperature and time. The coating
31、thickness on all test specimens for testing properties according to Table I shall be not less than2004m. Table I General requirements for the coating after cure End-point criterion: breakdown voltage Cyclic application of proof test shall be carried out; electrodes as in Sub-clause2.9 of IEC Publica
32、tion455-2-2. The coating thickness shall be250 504m. Ten test specimens of Type A for each exposure temperature. End-point:3kV applied for1min. The values given below in the column “Requirements” should be understood to mean that the central values obtained shall be equal to or greater than the spec
33、ified requirements for test methods of Sub-clauses2.6, 2.8, 2.9, 2.11, 2.12, 2.16 and2.17 of IEC Publication455-2-2, respectively equal to or lower than the requirements for test methods of Sub-clauses2.5 and2.14. Properties Test methods according to IECPublication455-2-2 (sub-clause) Units Requirem
34、ents for type EP-1 EP-2 EP-3 Porosity of coating 2.4 Number of pores Zero Zero Zero Scratch hardness 2.5 Method2 N 0.12 0.08 0.04 Cut-through resistance 2.6 C N 200 20 170 20 120 10 Cupping test 2.8 mm 0.5 2.0 3.0 Electric strength 2.9 b kV/mm 30 30 30 Volume resistivity after immersion in water 2.1
35、1 m7.cm 10 6 10 6 10 6 Resistance to tracking 2.12 CTI 175 175 175 Resistance to vapour of solvents 2.14 a % change of tested voltage breakdown 50 50 50 Thermal endurance 2.15 TI 130 130 130 Edge coverage 2.16 % 30 30 30 Thermal shock resistance 2.17 c Cycles without cracking 10 20 20 Pourability 1.
36、2 a This test applies only where legal requirements necessitate its use for materials included in “e” type equipment as defined in IECPublication79-7. A maximum decrease of50% for tested voltage breakdown is specified for solvents such as acetone, benzene,hexane, methanol and carbon disulphide. b Th
37、ickness of coating of test specimen:250 504m. c Required temperatures:+70C/30 C.BS5664-3.11:1995 BSI 10-1999 List of references See national foreword.BS 5664-3.11: 1995 IEC 455-3-11: 1988 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body res
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