1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58hydraulic tools and equipment The European Standard EN 62237:2005 has the status of a British Stand
2、ardICS 13.260; 29.240.99; 29.260.99Live working Insulating hoses with fittings for use with BRITISH STANDARDBS EN 62237:2005BS EN 62237:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 18 November 2005 BSI 18 November 2005ISBN 0 580 46767
3、8The UK participation in its preparation was entrusted to Technical Committee PEL/78, Tools for live working, which has the responsibility to:The UK technical committee, PEL/78, actively participated in the development of EN 62237 but consistently opposed some of its provisions. In particular, the c
4、ommittee is concerned that the electrical test severely restricts the availability of non-conductive hoses used for live working. It is expected that the tests will be reviewed as part of the maintenance process for EN 62237.The view of the committee is that this standard imposes more onerous test r
5、equirements than have previously been necessary for these applications, e.g. in SAE J343 and SAE J517, with the consequence that users will have a more limited choice of non-conductive hoses without any real increase in safety and those that meet the requirements attract an increase in cost.A list o
6、f organizations represented on this committee can be obtained on request to its secretary.Summary of pagesThis document comprises a front cover, an inside front cover, page i, a blank page, the EN title page, pages 2 to 31 and a back cover.The BSI copyright notice displayed in this document indicate
7、s when the document was last issued. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate
8、them in the UK.Amendments issued since publicationAmd. No. Date CommentsNational forewordThis British Standard is the official English language version of EN 62237:2005. It was derived by CENELEC from IEC 62237:2003.The CENELEC common modifications have been implemented at the appropriate places in
9、the text. The start and finish of each common modification is indicated in the text by tags . Where a common modification has been introduced by amendment, the tags carry the number of the amendment. For example, the common modifications introduced by CENELEC amendment A11 are indicated by . BS EN 6
10、2237:2005 BSI 18 November 2005Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of th
11、e BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.iblankEURO
12、PEAN STANDARD EN 62237 NORME EUROPENNE EUROPISCHE NORM April 2005 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 2005 CENELEC -
13、 All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62237:2005 E ICS 13.260; 29.240.99; 29.260.99 English version Live working Insulating hoses with fittings for use with hydraulic tools and equipment (IEC 62237:2003, modified) Travaux sous te
14、nsion Conduits flexibles isolants avec raccords utiliss avec les outils et matriels hydrauliques (CEI 62237:2003, modifie) Arbeiten unter Spannung Isolierende Schlauchleitungen zur Verwendung fr hydraulische Gerte und Ausrstungen (IEC 62237:2003, modifiziert) This European Standard was approved by C
15、ENELEC on 2005-03-01. 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 bibliographical references concerning such national stan
16、dards 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 CENELEC member into its own language and not
17、ified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg
18、, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of the International Standard IEC 62237:2003, prepared by IEC TC 78, Live working, together with the common modifications prepared by the Technical Committee CENELEC T
19、C 78, Equipment and tools for live working, was submitted to the formal vote and was approved by CENELEC as EN 62237 on 2005-03-01. 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 (
20、dop) 2006-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62237:2003 was approved by CENELEC as a European Standard with agreed common m
21、odifications. _ 2 EN 62237:2005 3 CONTENTS INTRODUCTION.5 1 Scope 6 2 Normative references .6 3 Terms and definitions .7 4 Requirements.7 4.1 Protection against corrosion.7 4.2 Finishing and mechanical protection 7 4.3 Insulating parts7 4.4 Conductive parts .8 4.5 Markings .8 4.6 Instructions for us
22、e 8 5 Type tests 9 5.1 General .9 5.1.1 Preparation of test pieces.9 5.1.2 Number of test pieces and test plan9 5.2 Visual inspection and dimensional check10 5.2.1 Visual inspection10 5.2.2 Dimensional check.10 5.3 Electric tests .10 5.3.1 Electric tests on insulating hoses10 5.3.2 Dielectric test o
23、n insulating hose with fittings12 5.4 Mechanical tests12 5.4.1 Hydrostatic test12 5.4.2 Fatigue test12 5.4.3 Mechanical impulse test .13 5.4.4 Leakage test14 5.4.5 Change in length test .14 5.4.6 Burst test.15 5.4.7 Cold bend test .15 5.4.8 Durability of marking 15 6 Quality assurance plan .15 7 Mod
24、ifications 16 Annex A (normative) Suitable for live working; double triangle (IEC-60417-5216(DB:2002-10)22 Annex B (normative) Chronology of the tests23 Annex C (normative) Quality assurance plan 24 Annex D (normative) Acceptance tests .27 Annex E (informative) In-service care.28 Bibliography .30 EN
25、 62237:2005 4 Annex ZA (normative) Normative references to international publications with their corresponding European publications31 Figure 1 Stopper for test piece (see 5.1.1)17 Figure 2 Test set-up for electric tests (see 5.3.1.1) .17 Figure 3 Preparation of specimen for test after the inflictio
26、n of a cut (see 5.3.1.4) .18 Figure 4 Dielectric wet test Typical test arrangement (see 5.3.1.5) .18 Figure 5 Dielectric wet test Details of electrode arrangement (see 5.3.1.5) .19 Figure 6 Testing device for the fatigue test (see 5.4.2)20 Figure 7 Diagram of mechanical impulse test (see 5.4.3) 21 T
27、able B.1 Chronological order of the tests 23 Table C.1 Information relative to defects 24 EN 62237:2005 5 INTRODUCTION This International Standard has been prepared in accordance with the requirements of IEC 61477. Text deleted EN 62237:2005 6 LIVE WORKING INSULATING HOSES WITH FITTINGS FOR USE WITH
28、 HYDRAULIC TOOLS AND EQUIPMENT 1 Scope This International Standard is applicable to mobile insulating hoses with fittings used with hydraulic tools and equipment for live working at nominal voltages exceeding 1 kV r.m.s. at power frequency. The use under D.C. conditions is not covered by this standa
29、rd. Insulating hoses with fittings are used to provide a connection between the hydraulic tool and the pump which are at different potentials. They are not considered as a fixed component of a live working device (e.g. aerial device). They can be connected and disconnected under negligible pressure.
30、 They can be directly handled by the user. 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 amen
31、dments) applies. IEC 60060-1:1989, High-voltage test techniques Part 1: General definitions and test requirements IEC 60060-2, High-voltage test techniques Part 2: Measuring systems IEC 60212:1971, Standard conditions for use prior to and during the testing of solid electrical insulating materials I
32、EC 60417-DB:20021), Graphical symbols for use on equipment Text deleted IEC 61477:2001, Live working Minimum requirements for the utilization of tools, devices and equipment Amendment 1:20022) 1)“DB” refers to the IEC on-line database. 2) There exists a consolidated edition 1.1 (2002) that includes
33、edition 1 (2001) and its Amendment 1 (2002). EN 62237:2005 7 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.1 insulating hose with fittings insulating and pressure resistant hose and fittings which are used to provide a connection between parts
34、 of hydraulic equipment at different electric potentials Definition 12.1.4 of IEC 60743 3.2 insulating hose insulating and pressure resistant hose without fittings 3.3 maximum operating pressure pressure specified by the manufacturer which shall not be exceeded during the use of the insulating hose
35、3.4 insulating liquid (for hydraulic equipment) insulating liquid which is used for the transmission of hydraulic energy between parts at different electric potentials IEV 651-11-02 4 Requirements 4.1 Protection against corrosion Metal parts shall be resistant to corrosion either by their own compos
36、ition or by being suitably treated. NOTE When two metallic materials are used, they should be selected in such a way as to avoid electrolytic action. 4.2 Finishing and mechanical protection The various components shall be designed so that they do not create the potential for injury. 4.3 Insulating p
37、arts Insulation is achieved by using a proper length of insulating hose. End fittings shall not impair the dielectric properties of the tool. The insulating parts shall be characterized by a special colour that shows their insulating property. NOTE Orange is a preferred colour to indicate insulating
38、 parts. EN 62237:2005 8 4.4 Conductive parts All conductive parts fixed to insulating parts shall be easily identifiable. The exterior surface of the insulating part that contains a conductive element shall be clearly marked by a line indicating the extreme position of the internal conductive part.
39、All conductive parts shall be designed and manufactured so as to limit the risk of short-circuits. 4.5 Markings Each insulating hose with fittings shall be marked with the following permanent markings: manufacturers name or trademark: date of manufacture (month and year) and possibly identification
40、number; maximum operating pressure (bar or MPa); insulating length of the insulating hose with fittings; symbol IEC-60417-5216(DB:2002-10) Suitable for live working; double triangle (see Annex A); NOTE The exact ratio of the height of the figure to the base of the triangle is 1,43. For the purpose o
41、f convenience, this ratio can be between the values of 1,4 and 1,5. number of the relevant European Standard immediately adjacent to the symbol (EN 62237). The tolerance of the insulating length is 50 mm. Markings shall be clearly legible to a person with normal or corrected vision, without addition
42、al magnification. The markings shall be resistant and shall not reduce the performance of the insulating hose with fittings. 4.6 Instructions for use Each insulating hose with fittings shall be supplied with the manufacturers written instructions for use and care. These instructions shall be prepare
43、d in accordance with the general provisions given in IEC 61477. These instructions shall include as a minimum: characteristics of required insulating liquid(s), NOTE When the insulating hoses with fittings are to be used at low temperatures, user and manufacturer should make sure that information on
44、 adequate insulating liquid(s) are included. minimum burst pressure; dimensions of the fittings, with tolerance 1 mm; diameters (internal and external) of the insulating hose, with tolerance 2 mm; minimum bending radius, with tolerance 25 mm; weight; instructions for cleaning, storage and transporta
45、tion; instructions for periodic testing, possible repair and disposal of the hose. EN 62237:2005 9 5 Type tests 5.1 General In order to show compliance with this standard, the manufacturer shall provide evidence that the following tests have been carried out successfully. Insulating hoses with fitti
46、ngs can be used indoors and outdoors. Unless otherwise specified for a particular test or measurement, the tests are carried out in a normal ambient atmosphere, (see IEC 60212): temperature range 15 C to 35 C; relative humidity 45 % to 80 %. The insulating liquid used for the tests shall meet the ch
47、aracteristics specified by the manufacturer in the instructions for use (see 4.6). The references of liquid used for the type tests shall be recorded with the test results. 5.1.1 Preparation of test pieces Before each test, the test pieces shall be prepared by cleaning using isopropanol (CH3-CH(OH)-
48、CH3) and dried in air at room temperature for a period of not less than 15 min, before being filled up if the need arises. Before each electrical test, the parts of the test pieces to be in contact with electrodes shall be covered with conductive adhesive tape, this to be done after the humidity con
49、ditioning when the case arises. Tests are carried out on three groups of test pieces: Group I : the test piece is the whole insulating hose with fittings. Group II : each test piece consists of an insulating hose, at least 600 mm long, filled with insulating liquid at atmospheric pressure, and made watertight with suitable stoppers, which let free the wall section of the hose (see Figur
