EN 60371-3-3-1995 en Specification for Insulating Materials Based on Mica Part 3 Specifications for Individual Materials Sheet 3 Specification for Rigid Mica Materials for Heating .pdf

1、CENELEC ENxh0371-3- 3 $03 = 3404583 0364656 033 Specification for insulating materials based on mica Part 3. Specifications for individual materials Sheet 3. Specification for rigid mica materials for heating equipment The European Standard EN 6037133 : 1995 has the status of a British Standard ICs

2、29.040.20 UDC 621.315.613.1 : 620.1 : 621.317.3 BS EN 6037133 : 1995 IEC 371-3-3 : 1983 COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling Services CENELEC EN+b0371-3- 3 95 = 3404583 IlLb4b57 T78 Amd.No. BS EN 60371-33 : 1995 Date Text affected Committe

3、es responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee GEU15, Insulating materials, upon which the following bodies were represented: British Ceramic Research Ltd. British Industrial Ceramic Manufacturers Association British Telecommuni

4、cations plc Department of Bade and Industry (National Physical Laboratory) Electrical and Electronic Insulation Association (BEAMA Ltd.) Electricity Association Federation of the Electronics Industry Minic;try of Defence Rotating Electrical Machines Association (BEAMA Ltd.) Bansmission and Distribut

5、ion Association (BEAMA Ltd.) The following bodies were also represented in the drafting of the standard, through subcommittees and panels: ERA Technology Ltd. Mica Trade Club This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the

6、 authority of the Standards Board and comes into effect on 15 December 1995 O BSI 1995 The following BSI references relate to the work on this standard Committee reference GEU15 Draft announced in BSZ News September 1995 ISBN O 580 24975 1 COPYRIGHT European Committee for Electrotechnical Standardiz

7、ationLicensed by Information Handling ServicesContents Committees responsible page inside front cover Nationai foreword ii Foreword 2 Text of EN 60371-33 3 i COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesCENELEC EN8b037L-3- 3 95 3404583 03b

8、4b59 840 = BS EN 6037133 : 1995 National foreword This British Standard has been prepared by Technid Committee GW15 and is the English language version of EN 60371-3-3 : 1995 Sp in this case, the binder shall have the necessary resistance to the operating temperature. The products may be supplied in

9、 sheets, strips or flat pieces. The minimum nominal thickness is 0.30 mm (mica Splittings) and 0.20 mm (mica paper). 2. General requirements The material as supplied shall be of uniform hardness, free from soft patches and foreign matter. The grade and visual characteristics of the Splittings, as we

10、ll as the nature of the mica paper and the bonding medium, shall be agreed between supplier and purchaser. 3. Detection of defects and conducting particles in sheets Until a method of detection of defects has been agreed for IEC Publication 371-2: Specification for Insulating Materials based on Mica

11、, Part 2: Methods of Test, the accepted type and number of defects is subject to agreement between supplier and purchaser. COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling Services CENELEC EN*b037L-3- 3 95 3i40V583 OL64bb3 271 1 2 3 Page 4 EN 60371-3-

12、3 : 1995 4 4. Thickness: measurements and tolerances Nominal thickness* The thickness shall be measured using the test specimen and procedure defined in IEC Publi- cation 371-2. The thickness (central value), in millimetres, shall not depart from the nominal thickness by more than the tolerances giv

13、en in Tables I and II. These tables also give the permitted differences between individual measurements on the same specimen. Thickness Individual measurements of specimen I TABLE I Thickness tolerances Materials based on mica Splittings Over 1.00 No tolerances specified Tolerance I 1 2 3 0.30 0.40

14、0.50 0.60 0.80 1 .o0 Nominal thickness (mm) f 0.06 f 0.06 f 0.07 f 0.08 kO.10 f 0.12 Tolerances Thickness Individual measurements of specimen (unground and ground) (mm) (mm) +0.20 -0.13 +0.20 -0.15 +0.25 -0.15 +0.25 -0.15 i-0.27 -0.17 +0.30 - 0.20 Subject to agreement between supplier and purchaser

15、TABLE II Thickness tolerances Materials based on mica paper 0.20 0.30 0.40 0.50 0.60 0.80 1.00 Over 1 .O0 f 0.04 f 0.04 f 0.04 f 0.05 f 0.05 f 0.06 f 0.07 - f 0.05 f 0.05 f 0.06 f 0.07 f 0.07 f0.10 f 10% t 0.08 I I I Intermediate thickness shall be supplied with the tolerances appropriate to the nex

16、t higher nominal thickness. COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling Services_ CENELEC ENmb037L-3- 3 95 I 34045133 0364664 LOB I 1 Page 5 EN 60371-3-3 : 1995 2 5. Characteristics Type HSl HS2 HS3 HP4 HP5 HP6 Table III gives the specified value

17、s for the characteristics of rigid mica materials for heating equip- ment, in whatever form they are delivered. Description Muscovite splittings with organic binder Phlogopite splittings with organic binder Muscovite splittings with silicon resin binder Mica paper with organic binder Mica paper with

18、 silicon resin binder Mica paper with inorganic binder TABLE III Characteristics of built-up mica materials for heating equipment 3 Maximum binder content 5.0 5.0 10.0 6.0 12.0 - 4 Minimum electric strength (kV/mm) 5 1.9 to 2.5 2.0 to 2.6 1.8 to 2.4 2.0 to 2.4 1.6 to 2.1 - 6. Flexural strength Under

19、 consideration. 7. Availability Rigid mica material for heating equipment is generally available : - in sheets approximately 1 m long and 0.5 m to 1 m wide; - in strips not more than 200 mm wide cut from sheets; - as flat pieces cut to the dimensions specified in the purchase order. 8. Marking Packa

20、ges shall be marked with the following information: a) the IEC publication reference and the type of product, for example 371-3-3 Type HS3; b) manufacturers name or trade mark; c) nominal thickness and dimensions; d) number of pieces and/or weight in each package. COPYRIGHT European Committee for El

21、ectrotechnical StandardizationLicensed by Information Handling Services CENELEC ENab037L-3- 3 95 m 3404583 OLb4bb5 044 m Page 6 EN 6037133 : 1995 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates

22、 by dated or undated reference, provisions from other publications. These nonnative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European St

23、andard oniy when incorporated in it by amendment or revision. For undated references the latest edition of the publidon referred to applies. NOTE. When the international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/H

24、D Year IEC 371-2 1973 Spefiation for insulating vrmkmds * basedon EN6037133 1978 mica Part2: Methods of test COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesList of references See national foreword. COPYRIGHT European Committee for Electrotec

25、hnical StandardizationLicensed by Information Handling Services CENELEC ENub037L-3- 3 95 m 3404583 01b4bb7 927 m BS EN 60371-33 : 1995 IEC 371-3-3 : 1983 BSI 389 Chiswick High Road London w4 4AL 9512-54l.36k- FP BSI - British Standards Institution BSI is the independent national body responsible for

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