BS EN 60216-4-1-2006 Electrical insulating materials - Thermal endurance properties - Ageing ovens - Single-chamber ovens《电气绝缘材料 热稳定性能 老化炉 单室电炉》.pdf

1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58properties Part 4-1: Ageing ovens Single-chamber ovensThe European Standard EN 60216-4-1:2006 has t

2、he status of a British StandardICS 17.220.99; 29.035.01Electrical insulating materials Thermal endurance BRITISH STANDARDBS EN 60216-4-1:2006BS EN 60216-4-1:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 4

3、8807 1A list of organizations represented on this committee can be obtained on request to its secretary.Cross-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 “Internationa

4、l Standards Correspondence Index”, or by using the “Search” facility of the 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 St

5、andard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 17 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments

6、issued since publicationAmd. No. Date Comments 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 p

7、romulgate them in the UK.National forewordThis British Standard is the official English language version of EN 60216-4-1:2006. It is identical with IEC 60216-4-1:2006. It supersedes BS 5691-4.1:1995 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/1

8、12, Evaluation and qualification of electrical insulating materials and systems, which has the responsibility to: EUROPEAN STANDARD EN 60216-4-1 NORME EUROPENNE EUROPISCHE NORM May 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Eu

9、ropisches 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 members. Ref. No. EN 60216-4-1:2006 E ICS 17.220.99; 29.035.01 Supersedes HD 611.4.1 S1:1992

10、English version Electrical insulating materials - Thermal endurance properties Part 4-1: Ageing ovens - Single-chamber ovens (IEC 60216-4-1:2006) Matriaux isolants lectriques - Proprits dendurance thermique Partie 4-1: Etuves de vieillissement - Etuves une chambre (CEI 60216-4-1:2006) Elektroisolier

11、stoffe - Eigenschaften hinsichtlich des thermischen Langzeitverhaltens Teil 4-1: Wrmeschrnke fr die Warmlagerung - Einzelkammerwrmeschrnke (IEC 60216-4-1:2006) This European Standard was approved by CENELEC on 2006-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations

12、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 standards may be obtained on application to the Central Secretariat or to any CENELEC member. This Europ

13、ean 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 notified to the Central Secretariat has the same status as the official versions. CENELEC members are t

14、he national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,

15、Switzerland and the United Kingdom. Foreword The text of document 112/16/FDIS, future edition 4 of IEC 60216-4-1, prepared by subcommittee 15E: Methods of test, of IEC technical committee 15: Insulating materials, which has now been merged with IEC technical committee 98: Electrical insulation syste

16、ms into IEC technical committee 112: Evaluation and qualification of electrical insulating materials and systems (provisional title), was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60216-4-1 on 2006-03-01. This European Standard supersedes HD 611.4.1 S1:1992 . The m

17、ain changes with regard to HD 611.4.1 S1:1992 is the adaptation to the technical content and the editorial form of EN 60216-4-2 and EN 60216-4-3. In addition, errors and omissions in IEC 60216-4-1:1990 have been corrected. The following dates were fixed: latest date by which the EN has to be impleme

18、nted at national level by publication of an identical national standard or by endorsement (dop) 2006-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International

19、Standard IEC 60216-4-1:2006 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60216-1 NOTE Harmonized as EN 60216-1:2001 (not modified). IEC 60216-3 NOTE Harmonized

20、 as EN 60216-3:2002 (not modified). IEC 60216-4-2 NOTE Harmonized as EN 60216-4-2:2000 (not modified). IEC 60216-4-3 NOTE Harmonized as EN 60216-4-3:2000 (not modified). IEC 60216-5 NOTE Harmonized as EN 60216-5:2003 (not modified). IEC 60216-6 NOTE Harmonized as EN 60216-6:2004 (not modified). IEC

21、60811-1-2 NOTE Harmonized as EN 60811-1-2:1995 (not modified). _ EN 60216-4-1:2006 2 CONTENTS 1 Scope 4 2 Normative references .4 3 Terms and definitions .4 4 Constructional requirements .6 4.1 General .6 4.2 Mechanical requirements .6 4.3 Ventilation .6 4.4 Specimen mounting arrangements .7 4.5 Tem

22、perature control and indicator systems 7 5 Performance requirements7 5.1 Temperature7 5.2 Temperature difference and temperature fluctuation.8 5.3 Temperature variation8 5.4 Maximum temperature deviation 8 5.5 Rate of ventilation8 5.6 Exposure volume.8 5.7 Time constant9 6 Test methods and procedure

23、.9 6.1 General .9 6.2 Exposure volume.9 6.3 Temperature and related parameters .9 6.4 Rate of ventilation10 6.5 Time constant11 7 Report11 8 Conditions of use and instructions for in-service monitoring by the user.12 8.1 Conditions of use.12 8.2 Procedure .12 8.3 In-service monitoring .12 Annex A (i

24、nformative) Test method to determine the rate of ventilation .13 Annex B (informative) Examples for calculation of temperature deviation 15 Annex ZA (normative) Normative references to international publications with their corresponding European publications00 Bibliography .16Table 1 Maximum allowab

25、le temperature differences and temperature fluctuations.8 Table 2 Maximum allowable temperature variation8 EN 60216-4-1:2006 3 ELECTRICAL INSULATING MATERIALS THERMAL ENDURANCE PROPERTIES Part 4-1: Ageing ovens Single-chamber ovens 1 Scope This part of IEC 60216 covers minimum requirements for venti

26、lated and electrically heated single-chamber ovens, with or without forced gas circulation, for thermal endurance evaluation of electrical insulation. It covers ovens designed to operate over all or part of the temperature range from 20 C above ambient to 500 C. It gives acceptance tests and in-serv

27、ice monitoring tests for these ageing ovens. 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 am

28、endments) applies. ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories IEC 60335 (all parts), Household and similar electrical appliances Safety 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 ra

29、te of ventilation N number of air changes per hour in the exposure chamber at room temperature 3.2 exposure volume that central part of the exposure chamber that meets the requirements for temperature fluctuation, temperature difference and temperature variation 3.3 exposure temperature T temperatur

30、e selected for ageing test specimens to obtain data for the determination of effects of temperature NOTE See also “global exposure temperature”. 3.4 temperature fluctuation T1maximum change in temperature at one point in the exposure volume over a period of time EN 60216-4-1:2006 4 3.5 temperature d

31、ifference T2maximum difference of temperature between any two points in the exposure volume at any one time 3.6 temperature variation Tv difference between the highest temperature and the lowest temperature measured in the exposure volume over a period of time 3.7 global average temperature average

32、temperature, calculated from the results of determinations made over a period of at least 3 h using nine sensors spaced throughout the exposure volume of the chamber 3.8 global exposure temperature considered to be equal to the global average temperature if the sensors are mounted in the same space

33、as that containing the specimens NOTE The term global exposure temperature is frequently abbreviated to exposure temperature. 3.9 time constant (of a standard specimen) measure of time taken for the temperature of a standard specimen to approach the exposure volume temperature 3.10 temperature devia

34、tion T dcalculated difference in the exposure temperature from the intended value due to the combination of the temperature difference, temperature fluctuation and the error in the measurement of temperature NOTE Examples for calculation of temperature deviation are given in Annex B. 3.11 ventilatio

35、n continuous passage of pre-heated gas through the exposure chamber 3.12 standard oven oven which meets the requirements of this standard 3.13 precision oven oven with an electrically heated and ventilated chamber and with the ability to maintain the exposure temperature in its exposure volume withi

36、n the limits given in IEC 60216-4-2 NOTE The limits for temperature difference and temperature fluctuation in the exposure volume given in this standard are looser than those given in IEC 60216-4-2. 3.14 oven chamber interior volume of a single chamber oven providing the space for exposing test spec

37、imens or accommodating an iso-box (see 3.15) EN 60216-4-1:2006 5 3.15 iso box metal box with a close fitting door, mounted in the oven chamber and used as an exposure chamber to reduce the temperature deviation present in the un-modified oven chamber (see IEC 60216-4-2) 4 Constructional requirements

38、 4.1 General The oven shall be soundly constructed of suitable materials designed for continuous operation over the whole of the allowable temperature range. All electrical and other ancillary fittings shall be readily accessible for maintenance purposes. NOTE This standard does not cover all safety

39、 aspects. Additional information may be found in the IEC 60335 series. 4.2 Mechanical requirements The materials of construction of the oven chamber and the interior fittings shall be chosen as to not influence the properties of the specimens. NOTE Aluminium alloys and stainless steel have been foun

40、d suitable in many cases. Copper based alloys and any materials that may give off interfering volatiles over the temperature range of the oven, for example some silicone resins, must not be used. The interior of the oven shall be constructed of suitable corrosion-resistant, non-absorbent material, s

41、o fabricated that any joints are leak-proof and not subject to corrosion. The interior surfaces shall be easy to clean. Attention shall be given to ensure that the door to the oven chamber is provided with an efficient seal and that any gasket materials used do not influence the properties of the sp

42、ecimens. 4.3 Ventilation The oven chamber shall be provided with a supply of pre-heated ventilating gas, passing the chamber at one side and being exhausted through another. Wherever possible, the ventilating gas shall be directed in such a manner as to produce mixing of the ventilated gas throughou

43、t the chamber. The rate of ventilation available shall be in accordance with 5.5 Consideration shall be given to ensure adequate purity of the incoming ventilating gas to minimize influence on the results. If specified, inlet vents shall enable air and/or other gases to be supplied from controlled s

44、ources. The construction shall be fitted with equipment to switch off the oven and preferably activate an alarm when the supply of ventilating gas fails. NOTE It is recommended that the exhaust from the oven chamber be vented to outside atmosphere, but precautions should be taken to ensure that vola

45、tiles produced by ageing specimens do not damage health or the environment. EN 60216-4-1:2006 6 4.4 Specimen mounting arrangements Provision shall be made for supporting/suspending and positioning specimens within the exposure volume. The specimens shall neither touch each other nor touch the chambe

46、r walls. The specimens and supports shall not occupy more than 25 % of the cross-sectional area of the chamber in any one plane, nor occupy more than 10 % of the effective working volume of the chamber. NOTE If there is an expectation in practice that any of these maxima could be exceeded, the suppl

47、ier and purchaser should agree with the user on whether dummy loads should be used during the assessment of performance. 4.5 Temperature control and indicator systems The temperature in the exposure volume shall be controllable to the limits given in Clause 5. The oven chamber shall be fitted with a

48、 minimum of two temperature sensors (numbered 1 and 2). Before installation, the sensors 1 and 2 shall be calibrated by reference to a suitable standard (sensor 3) to give a maximum measurement uncertainty within 1,0 K. The difference in reading between the two sensors as a function of temperature s

49、hall be recorded. Sensor 3 shall have a maximum uncertainty of 0,5 K. Temperature sensor 1 shall be mounted in a convenient manner, and used to indicate the chamber temperature. NOTE 1 It is recommended that the temperature should be recorded during the whole test procedure. The readout also allows early identification of any malfunction in the system. Temperature sensor 2 shall be mounted as closely as possible to where the test specimens will be located. Its placement s