1、BRITISH STANDARDBS EN 61212-2:2006Insulating materials Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes Part 2: Methods of testThe European Standard EN 61212-2:2006 has the status of a British StandardICS 29.035.01g49g50g3g38g50g51g60g44g49g42g3g5
2、8g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 61212-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 Januar
3、y 2007 BSI 2007ISBN 978 0 580 50101 2National forewordThis British Standard was published by BSI. It is the UK implementation of EN 61212-2:2006. It is identical with IEC 61212-2:2006. It supersedes BS EN 61212-2:1996 which is withdrawn.The UK participation in its preparation was entrusted by Techni
4、cal Committee GEL/15, Material specifications, to Subcommittee GEL/15/3, Rigid fibrous reinforced laminates for electrical purposes.A list of organizations represented on GEL/15/3 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of
5、 a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 61212-2 NORME EUROPENNE EUROPISCHE NORM December 2006 CENELEC European Committ
6、ee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC me
7、mbers. Ref. No. EN 61212-2:2006 E ICS 29.035.01 Supersedes EN 61212-2:1996English version Insulating materials - Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes Part 2: Methods of test (IEC 61212-2:2006) Matriaux isolants - Tubes et barres indust
8、riels, rigides, ronds, stratifis, base de rsines thermodurcissables, usages lectriquesPartie 2: Mthodes dessai (CEI 61212-2:2006) Isolierstoffe - Runde Rohre und Stbe aus technischen Schichtpressstoffen auf der Basis warmhrtender Harze fr elektrotechnische Zwecke Teil 2: Prfverfahren (IEC 61212-2:20
9、06) This European Standard was approved by CENELEC on 2006-11-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographi
10、cal references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a
11、CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icelan
12、d, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 15/273/FDIS, future edition 2 of IEC 61212-2, prepared by IEC TC 15, Solid electrical insu
13、lating materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61212-2 on 2006-11-01. This European Standard supersedes EN 61212-2:1996. The main changes from EN 61212-2:1996 are as follows: added application use and safety statements; reformatted document to brin
14、g it up to current IEC document format; test method references updated. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-08-01 latest date by which the national standards
15、conflicting with the EN have to be withdrawn (dow) 2009-11-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61212-2:2006 was approved by CENELEC as a European Standard without any modification. _ 2 EN 61212-2:2006INTERNATIONAL STANDARD IEC61212-2
16、Second edition2006-04Insulating materials Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes Part 2: Methods of test Reference number IEC 61212-2:2006(E) EN 61212-2:2006CONTENTS INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Conditioning of sp
17、ecimens7 4 Dimensions 7 4.1 General .7 4.2 External diameter 7 4.3 Internal diameter .8 4.4 Wall thickness .9 4.5 Departure from straightness Applicable to all tubes up to 300 mm diameter .10 5 Mechanical tests.10 5.1 Flexural strength perpendicular to laminations.10 5.2 Axial compressive strength12
18、 5.3 Cohesion between layers 14 6 Electrical tests15 6.1 Electric strength and breakdown voltage .15 6.2 Insulation resistance after immersion in water .17 6.3 Dissipation factor and permittivity (tube only) 18 7 Other tests .18 7.1 Thermal endurance .18 7.2 Water absorption.19 7.3 Density19 7.4 Fla
19、mmability19 Annex ZA (normative) Normative references to international publications with their Figure 1 Preparation of test specimen from a large tube for testing flexural strength11 Figure 2 Position of tube in testing machine for testing cohesion between layers .14 Figure 3 Test specimens and elec
20、trodes for testing electric strength of tubes 17 Figure 4 Test specimens for flammability testing20 4 EN 61212-2:2006corresponding European publications.23 BIBLIOGRAPHY .22 INTRODUCTION This part of IEC 61212 is one of a series which deals with industrial, rigid, round, laminated tubes and rods base
21、d on thermosetting resins for electrical purposes. The materials are similar to those described in IEC 62011-1 but of different cross-section. This series, under the general heading Insulating materials Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purp
22、oses, consists of three parts: Part 1: Definitions, designations and general requirements (IEC 61212-1) Part 2: Methods of test (IEC 61212-2) Part 3: Specifications for individual materials (IEC 61212-3) 5 EN 61212-2:2006INSULATING MATERIALS INDUSTRIAL RIGID ROUND LAMINATED TUBES AND RODS BASED ON T
23、HERMOSETTING RESINS FOR ELECTRICAL PURPOSES Part 2: Methods of test 1 Scope This part of IEC 61212 describes methods of test for the materials defined in IEC 61212-1. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user
24、for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. Safety warning: It is the responsibility of the user of the methods contained or referred to in this document to ensure that they ar
25、e used in a safe manner. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. I
26、EC 60167:1964, Methods of test for the determination of the insulation resistance of solid insulating materials IEC 60212:1971, Standard conditions for use prior to and during the testing of solid electrical insulating materials IEC 60216-1:2001, Electrical insulating materials Properties of thermal
27、 endurance Part 1: Ageing procedures and evaluation of test results IEC 60216-2:2005, Electrical insulating materials Thermal endurance properties Part 2: Determination of thermal endurance properties of electrical insulating materials Choice of test criteria IEC 60243-1:1998, Electrical strength of
28、 insulating materials Test methods Part 1: Tests at power frequencies IEC 60250:1969, Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths IEC 60296:2003, F
29、luids for electrotechnical applications Unused mineral oils for trans-formers and switchgear 6 EN 61212-2:2006IEC 60695-11-10:1999, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods Amendment 1 (2003)1IEC 61212-1, Insulating materials Industrial rigid round
30、laminated tubes and rods based on thermosetting resins for electrical purposes Part 1: General requirements IEC 61212-3 (all sheets), Insulating materials Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes Part 3: Specifications for individual mater
31、ials ISO 62:1999, Plastics Determination of water absorption ISO 178:2001, Plastics Determination of flexural properties ISO 604:2002, Plastics Determination of compressive properties ISO 1183-1:2004, Plastics Methods for determining the density and relative density of non-cellular plastics Part 1:
32、Immersion method, liquid pyknometer method and titration method ISO 3611:1978, Micrometer callipers for external measurement ISO 3599:1976, Vernier callipers reading to 0,1 and 0,05 mm ISO 6906:1984, Vernier callipers reading to 0,02 mm 3 Conditioning of specimens Unless otherwise specified, test sp
33、ecimens shall be conditioned immediately prior to testing for at least 24 h in standard atmosphere B according to IEC 60212 at a temperature of 23 C 2 K and a relative humidity of (50 5) %. Unless otherwise specified, each specimen shall be tested in the conditioning atmosphere or the tests shall co
34、mmence within 3 min of removal of each specimen from the conditioning atmosphere. Where testing at an elevated temperature is required in a specification sheet of IEC 61212-3, test specimens shall be conditioned for 1 h at the elevated temperature immediately before testing. 4 Dimensions 4.1 General
35、 All dimensions shall be measured in the “as received” condition. 4.2 External diameter 4.2.1 Test apparatus The external diameter of the tubes and rods shall be determined using one of the apparatus listed below: 1There exists a consolidated version 1.1 (2003) that includes IEC 60695-11-10 (1999) a
36、nd its Amendment 1 (2003). 7 EN 61212-2:2006a) Nominal external diameter 100 mm An external screw type micrometer with an accuracy of 0,02 mm or better, according to ISO 3611, having faces with diameters between 6 mm and 8 mm. b) Nominal external diameter 100 mm and 500 mm A slide gauge (Vernier cal
37、iper) in accordance with ISO 3599. c) Nominal external diameter 500 mm A steel tape, graduated in divisions of 0,5 mm with an accuracy of 0,1 mm or better. Any other means of measurement with the same or better accuracy may be used. In case of dispute, the specified apparatus shall be used. 4.2.2 Pr
38、ocedure For tubes or rods with nominal external diameter 500 mm, measure the external diameter at three points along the length, but not less than 20 mm from the ends, generally at both ends and the middle. At each of these points, a minimum of three readings equally distributed around the circumfer
39、ence shall be taken. For tubes or rods with nominal external diameter 500 mm, measure the circumference at three places along the length, distributed as above, and calculate the diameter. 4.2.3 Results For nominal external diameters 100 mm, the measured values shall be recorded to the nearest 0,02 m
40、m. For nominal external diameters 100 mm and 500 mm, the measured values shall be recorded to the nearest 0,1 mm. For nominal external diameters 500 mm, the diameters shall be calculated from the measured circumferences and recorded to the nearest millimetre. 4.2.4 Report The arithmetic mean of the
41、recorded values shall be reported as the diameter of the tube or rod. 4.3 Internal diameter 4.3.1 Test apparatus The internal diameter of tubes shall be determined using one of the instruments listed below. a) For tubes with nominal internal diameter 10 mm A tapered plug gauge or pin type micrometer
42、 with an accuracy of 0,02 mm or better. b) For tubes with nominal internal diameter 10 mm and 500 mm A slide gauge (Vernier caliper) in accordance with ISO 3599. 8 EN 61212-2:2006c) For tubes with nominal internal diameter 500 mm A graduated steel tape to measure the external circumference in accord
43、ance with 4.2.1 c). A slide gauge (Vernier caliper) to measure the wall thickness in accordance with 4 2.1. b). Any other means of measurement having the same accuracy as specified above or better may be used. In case of dispute, the specified apparatus shall be used. 4.3.2 Procedure a) For tubes wi
44、th nominal internal diameter 10 mm Measure the internal diameter of the tube at both ends using a tapered plug gauge, or at three points equally spaced around the inside circumference at both ends using a pin type micrometer. b) For tubes with nominal internal diameter 10 mm and 500 mm Measure the i
45、nternal diameter of the tube at a minimum of three points equally spaced along the inside circumference at both ends. c) For tubes with nominal internal diameter 500 mm The internal diameter shall be calculated from the external diameter determined according to 4.2 and the wall thickness determined
46、according to 4.4. 4.3.3 Results For tubes with nominal internal diameter 10 mm measured using a tapered plug gauge or pin type micrometer, the values measured at the two ends shall be recorded to the nearest 0,02 mm. For tubes with nominal internal diameter 10 mm and 500 mm, measured using a slide g
47、auge, the three values measured at the two ends shall be recorded to the nearest 0,1 mm. For tubes with nominal internal diameter 500 mm, calculate the internal diameters using the measured outside diameters and the corresponding measured wall thicknesses and record the calculated values to the near
48、est millimetre. 4.3.4 Report For tubes with nominal internal diameter 10 mm measured using a tapered plug gauge, the arithmetic mean of the two values recorded shall be reported as the internal diameter of the tube. For tubes with nominal internal diameter 10 mm measured using a pin type micrometer,
49、 the arithmetic mean of the six values recorded shall be reported as the internal diameter of the tube. For tubes with nominal internal diameter 10 mm and 500 mm, the arithmetic mean of the six recorded values shall be reported as the internal diameter of the tube. For tubes with nominal internal diameter 500 mm, the arithmetic mean of the recorded values shall be reported as the internal diameter of the tube. 4.4 Wall thickness 4.4.
