SIST EN 61248-1:2002
(Main)Transformers and inductors for use in electronic and telecommunication equipment -- Part 1: Generic specification
Transformers and inductors for use in electronic and telecommunication equipment -- Part 1: Generic specification
Prescribes the compliance requirements for manufacturers of transformers and inductors for use in electronic equipment in order to obtain capability approval and the component test schedules to be used for the assessment of that capability.
Transformatoren und Drosseln für elektronische und nachrichtentechnische Einrichtungen -- Teil 1: Fachgrundspezifikation
Transformateurs et inductances destinés aux équipements électroniques et de télécommunications -- Partie 1: Spécification générique
Prescrit les exigences à respecter par les fabricants de transformateurs et d'inductances destinés aux équipements électroniques afin d'obtenir l'agrément de savoir-faire et définit les programmes d'essais à effectuer sur les composants pour l'évaluation de ce savoir-faire.
Transformers and inductors for use in telecommunication and electronic equipment - Part 1: generic specification (IEC 61248-1:1996)
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Transformers and inductors for use in telecommunication and electronic equipment - Part 1: generic specification (IEC 61248-1:1996)Transformatoren und Drosseln für elektronische und nachrichtentechnische Einrichtungen -- Teil 1: FachgrundspezifikationTransformateurs et inductances destinés aux équipements électroniques et de télécommunications -- Partie 1: Spécification génériqueTransformers and inductors for use in electronic and telecommunication equipment -- Part 1: Generic specification29.180Transformatorji. DušilkeTransformers. ReactorsICS:Ta slovenski standard je istoveten z:EN 61248-1:1997SIST EN 61248-1:2002en01-september-2002SIST EN 61248-1:2002SLOVENSKI
STANDARD
SIST EN 61248-1:2002
SIST EN 61248-1:2002
SIST EN 61248-1:2002
SIST EN 61248-1:2002
SIST EN 61248-1:2002
SIST EN 61248-1:2002
SIST EN 61248-1:2002
IEC•NORMECEIINTERNATIONALE1 E CINTERNATIONAL1248-1QC 260000STANDARDPremière éditionFirst edition1996-06Transformateurs et inductances destinésaux équipements électroniques et detélécommunications —Partie 1:Spécification génériqueTransformers and inductors for use in electronicand telecommunication equipment —Part 1:Generic specification© CEI 1996 Droits de reproduction réservés — Copyright — all rights reservedAucune partie de cette publication ne peut être reproduite niutilisée sous quelque forme que ce soit et par aucun pro-cédé, électronique ou mécanique, y compris la photocopie etles microfilms, sans raccord écrit de l'éditeur.No part of this publication may be reproduced or utilized inany form or by any means, electronic or mechanical,including photocopying and microfilm, without permissionin writing from the publisher.Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, SuisseCommission Electrotechnique Internationale CODE PRIXInternational Electrotechnical Commission PRICE CODEMetegyuapoAHaa anelcrporexHw ecnaa {{UMHCOHRPour prix, voir catalogue en vigueurFor price, see current catalogueUSIST EN 61248-1:2002
1248-1 ©IEC:1996– 3 –CONTENTSPageFOREWORD 5Clause1General 71.1Scope71.2Normative references 71.3General considerations
111.4Terminology
111.5 AQLs for particular parameter and for the whole sample of components 131.6Letter symbols, signs and abbreviations 131.7Graphical symbols 131.8 Marking of the component and package 131.9Structurally similar components
151.10 Delayed delivery 151.11 Certified test records 151.12 Standard ratings and characteristics
151.13 Ordering information 171.14 Quality conformance inspection
192 Tests
193 Capability approval procedures
193.1Eligibility for capability approval 193.2Application for capability approval 213.3Description of capability 253.4Appraisal of capability
253.5Announcement of capability approval
453.6Maintenance of capability approval
473.7Changes to the approved capability
47Tables1Sample selection and test flow chart for the appraisal of capability312 Sample selection and test flow chart for the maintenance of capability approval51AnnexesA Sample format for certified test record 53B Sample format for abstract of description of capability for inclusionin QC 001005 (IECQ Register of approval)
55INDEX 57SIST EN 61248-1:2002
1248-1 © I EC:1996– 5 –INTERNATIONAL ELECTROTECHNICAL COMMISSIONTRANSFORMERS AND INDUCTORS FOR USE IN ELECTRONICAND TELECOMMUNICATION EQUIPMENTPart 1: Generic specificationFOREWORD1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardizationcomprising all national electrotechnical committees (IEC National Committees). The object of the IEC is topromote international cooperation on all questions concerning standardization in the electrical andelectronic fields. To this end and in addition to other activities, the IEC publishes International Standards.Their preparation is entrusted to technical committees; any IEC National Committee interested inthe subject dealt with may participate in this preparatory work. International, governmental andnon-governmental organizations liaising with the IEC also participate in this preparation. The IECcollaborates closely with the International Organization for Standardization (ISO) in accordance withconditions determined by agreement between the two organizations.2)The formal decisions or agreements of the IEC on technical matters, express as nearly as possible aninternational consensus of opinion on the relevant subjects since each technical committee hasrepresentation from all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in theform of standards, technical reports or guides and they are accepted by the National Committees in thatsense.4)In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional standards. Anydivergence between the IEC Standard and the corresponding national or regional standard shall be clearlyindicated in the latter.5)The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment declared to be in conformity with one of its standards.6)Attention is drawn to the possibility that some of the elements of this International Standard may be thesubject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights.International Standard IEC 1248-1 has been prepared by IEC technical committee 51:Magnetic components and ferrite materials.This standard is intended for use in the IEC Quality Assessment System for ElectronicComponents (IECQ).The operation of the IECQ is governed by IEC QC 001001 and IEC QC 001002. Specifi-cations written for components assessed under this scheme, and their use in the scheme,are the subject of IEC Guide 102.The text of this standard is based on the following documents:FDISReport on voting
51/398/FDIS51/427/RVDFull information on the voting for the approval of this standard can be found in the reporton voting indicated in the above table.Annexes A and B are for information only.The QC number that appears on the front cover of this publication is the specificationnumber in the IECQ System.SIST EN 61248-1:2002
1248-1 © I EC:1996– 7 –TRANSFORMERS AND INDUCTORS FOR USE IN ELECTRONICAND TELECOMMUNICATION EQUIPMENTPart 1: Generic specification1 General1.1 ScopeThis part of IEC 1248 is a generic specification which prescribes the compliance require-ments for manufacturers of transformers and inductors for use in electronic equipment inorder to obtain capability approval in accordance with 11.7 of QC 001002, and thecomponent test schedules to be used for the assessment of that capability. It applies tocomponents, including polyphase types, that are primarily intended for use in electronicand telecommunication equipment.This specification also prescribes requirements for marking, delayed delivery and ordering,and lists standard ratings and characteristics. In addition, it specifies how quality confor-mance testing should be carried out on ordered components.NOTE – The transformers and inductors that are the subject of this specification may include other compo-nents essential to the operation of the device, e.g. capacitors associated with constant voltage trans-formers and resonated windings.1.2 Normative referencesThe following normative documents contain provisions, which, through reference in thistext, constitute provisions of this part of IEC 1248. At the time of publication, the editionsindicated were valid. All normative documents are subject to revision, and parties toagreements based on this part of IEC 1248 are encouraged to investigate the possibility ofapplying the most recent editions of the normative documents listed below. Membersof IEC and ISO maintain registers of currently valid International Standards.IEC Guide 102: 1989, Electronic components. Specification structures for quality assess-ment (Qualification approval and capability approval)IEC QC 001001: 1986, Basic rules of the IEC Quality Assessment System for ElectronicComponents (IECQ)Amendment 2 (1994)IEC QC 001002: 1986, Rules of procedure of the IEC Quality Assessment System forElectronic Components (IECQ)Amendment 2 (1994)IEC QC 001004: Specifications listIEC QC 001005: Register of firms, products and services approved under the IECQ Sys-tem, including ISO 9000IEC 50: International Electrotechnical Vocabulary (IEV)SIST EN 61248-1:2002
1248-1 © I EC:1996- 9 -IEC 68-1: 1988, Environmental testing, Part 1: General and guidanceAmendment 1 (1992)IEC 68-2: Environmental testing - Part 2: TestsIEC 68-2-1: 1990, Environmental testing - Part 2: Tests - Tests A: ColdAmendment 1 (1993), Amendment 2 (1994)IEC 68-2-2: 1974, Environmental testing - Part 2: Tests - Tests B: Dry heatAmendment 1 (1993), Amendment 2 (1994)IEC 68-2-3: 1969, Environmental testing - Part 2: Tests - Test Ca: Damp heat, steadystateIEC 68-2-6: 1982, Environmental testing - Part 2: Tests - Test Fc and guidance: Vibration(sinusoidal)IEC 68-2-7: 1983, Environmental testing - Part 2: Tests - Test Ga and guidance: Acceler-ation, steady stateAmendment 1 (1986)IEC 68-2-13: 1983, Environmental testing - Part 2: Tests - Test M: Low air pressureIEC 68-2-14: 1984, Environmental testing - Part 2: Tests - Test N: Change of temperatureAmendment 1 (1986)IEC 68-2-17: 1994, Environmental testing - Part 2: Tests - Test Q: SealingIEC 68-2-20: 1979, Environmental testing - Part 2: Tests - Test T: SolderingAmendment 2 (1987)IEC 68-2-21: 1983, Environmental testing - Part 2: Tests - Test U: Robustness of ter-minations and integral mounting devicesAmendment 2 (1991), Amendment 3 (1992)IEC 68-2-27: 1987, Environmental testing - Part 2: Tests - Test Ea and guidance: ShockIEC 68-2-29: 1987, Environmental testing - Part 2: Tests - Test Eb and guidance: BumpIEC 68-2-58: 1989, Environmental testing - Part 2: Tests - Test Td: Solderability,resistance to dissolution of metallization and to soldering heat of Surface MountingDevices (SMD)IEC 76-1: 1993, Power transformers - Part 1: GeneralIEC 367-1: 1982, Cores for inductors and transformers for telecommunications - Part 1:Measuring methodsAmendment 1 (1984), Amendment 2 (1992)IEC 410: 1973, Sampling plans and procedures for inspection by attributesIEC 617: Graphical symbols for diagramsIEC 651: 1979, Sound level metersAmendment 1 (1993)SIST EN 61248-1:2002
1248-1 © IEC:1996- 11 -IEC 695: Fire hazard testingIEC 723: Inductor and transformer cores for telecommunicationIEC 852-5: 1994, Outline dimensions of transformers and inductors for use in telecommuni-cation and electronic equipment - Part 5: Transformers and inductors using the series Qof C-coresIEC 1007: 1994, Transformers and inductors for use in electronic and telecommunicationequipment - Measuring methods and test proceduresISO 31: Quantities and units1.3 General considerationsFor convenience, the following outline of the sequence of events in the capability approvalprocedure is given.a) A manufacturer wishing to obtain capability approval writes a capability manualwhich clearly defines the scope of his design capability, manufacturing processes andquality control, to the satisfaction of the National Supervising Inspectorate (NSI).b) The manufacturer, in collaboration with the NSI, selects sample components todemonstrate the limits of this scope, and the sample is assessed.c) These components are submitted to a test programme in accordance with clause 3of this generic specification.d) When testing is successfully completed and the manufacturers systems approvedagainst the capability manual, capability approval is granted and the fact is published inQC 001005. The capability approval is maintained by periodic testing of sample compo-nents at the limits of the scope of the capability.e) A potential customer makes an enquiry to the manufacturer for components withinthe scope of capability published in QC 001005 (or by CODUS).f) The specification will be decided by the following two methods:1)the specification is negotiated between the manufacturer and the customer untilan agreed detail specification is finalized;2)the detail specification is prepared by the manufacturer for his series ofcatalogue products. The customer will check the detail specification which will bemodified by the customer's request if necessary.NOTE — The detail specification is preferably based on one of the blanks included in the appropriatesectional specification.g) The manufacturer allocates a reference number to the resulting detail specificationwhich is filed and is available for scrutiny by the NSI. The component is inspected andreleased in accordance with this specification.1.4 TerminologyFor the purposes of this specification, the definitions of IEC 1007 apply, together withthose given in IEC 50 and IEC 410.SIST EN 61248-1:2002
1248-1 ©IEC:1996-13 -1.5 AQLs for particular parameter and for the whole sample of components1.5.1 AQL for particular parameter (PAQL)The AQLs ratings designated for particular parameters listed in the inspection require-ments of the detail specifications are the maximum numbers of defects per hundred units.1.5.2 AQL for the whole sample of components (SAQL)The AQLs can be designated as the maximum percent defective for the whole sample ofcomponents, as defined in 3.4.1.1, or for a selected group (or groups) of parametersspecified in the CQC schedules and listed in 3.4.2 (e.g. for the group or groups of parame-ters which are for the customer of fundamental importance for the component operation).AQLs ratings for the whole sample are decided by the method 1 described in 1.3 f).1.6 Letter symbols, signs and abbreviationsLetter symbols, signs and abbreviations shall comply with ISO 31.1.7 Graphical symbolsGraphical symbols shall comply with IEC 617.1.8 Marking of the component and packageUnless otherwise specified in the detail specification, each component shall be marked asfar as it is practical with the items given below, in the order of precedence stated:a)type designation');b)manufacturer's name or trade mark;c)production lot number or date code2).All the above information shall appear also on the primary package.NOTES1If a transparent package is used, the information may be marked on a label that can be read withoutopening the package.2For polyphase components it is desirable to give a connection symbol as defined in IEC 76-1.1)For components supplied against the detail specification, the type designation will be that required by thecustomer. For components supplied against the detail specification for standard catalogue items, the typedesignation will be the manufacturer's type designation.2)Where the date also serves as lot identification, only the date code need appear on the component andpackage.SIST EN 61248-1:2002
1248-1 ©IEC:1996- 15 -1.9 Structurally similar componentsThe requirements relating to structural similarity are superseded by the details of thecapability approval procedure included in clause 3.1.10 Delayed deliveryComponents held for a period exceeding one year after acceptance testing shall bere-examined prior to despatch and shall satisfy the inspection requirements specifiedbelow, unless otherwise specified in the detail specification.SolderabilityTest Ta of IEC 68-2-20 orMinimum: two terminationsTest Td of IEC 68-2-58, asspecified in the detail specificationMaximum: 10 %1.11 Certified test recordsCertified test records (CTRs) shall be provided only when specifically required by thedetail specification.When so provided, CTRs shall be printed on size A4 paper in the format, for example,illustrated in annex A.1.12 Standard ratings and characteristicsPreferred values for ratings and characteristics, in accordance with the appropriate partof IEC 68, are as follows:a) Minimum ambient temperature (in accordance with IEC 68-2-1)-10 °C ± 3 °C-25 °C ± 3 °C-40 °C ± 3 °C-55 °C ± 3 °C-65 °C ± 3 °Cb)Maximum ambient temperature (in accordance with IEC 68-2-2)40 °C ± 2 °C55 °C ± 2 °C70 °C ± 2 °C85 °C ± 2 °C100 °C ± 2 °C125 °C ± 2 °Cc)Damp heat, steady state exposure (in accordance with IEC 68-2-3)4 days10 days21 days56 daysNOTE — to a), b), c) — In accordance with annex A of IEC 68-1, climatic categories are often expressed inthe coded numerical form:minimum ambient temperature/maximum ambient temperature/number of days exposure of damp heatSIST EN 61248-1:2002
1248-1 ©IEC:1996- 17 -d)Shock (in accordance with IEC 68-2-27)294 m/s2, 18 ms490 m/s2, 11 ms981 m/s2, 6 mse)Bump (in accordance with IEC 68-2-29)Number of bumps1 000 ± 104 000 ± 10This number of bumps is the total to be applied to any one sample.Severity98 m/s2, 16 ms390 m/s2, 6 msf)Vibration (in accordance with IEC 68-2-6)Frequency range10 Hz to 55 Hz10 Hz to 500 Hz10 Hz to 2 000 HzValue of acceleration and displacementDisplacement amplitudeAcceleration amplitudebelow cross-overabove cross-over frequencyfrequencym/s2mm490,35980,751961,5g)Acceleration, steady state (in accordance with IEC 68-2-7)98 m/s2196 m/s2490 m/s2981 m/s2h)Low air pressure (in accordance with IEC 68-2-13)25 kPa8 kPa1.13 Ordering informationA component shall be the subject of a detail specification based on the appropriate detailspecification relative to the component sub-family.The specification shall comply with the generic specification and the appropriate sectionalspecification and, when read in conjunction with them, shall adequately describe thecomponent.SIST EN 61248-1:2002
1248-1 ©IEC:1996–19 –The detail specification shall be allocated a component identity number either customer's,or manufacturer's or both parties' identification numbers, and the characteristics in thedetail specifications such as ratings and dimensions shall fall within the scope ofthe manufacturer's capability approval.When the contents of the specification have been agreed between customer and manufac-turer, and the component or its family has been achieved for the capability approval,the manufacturer shall describe the appropriate sectional specification number (e.g. QC260X00/FRR/2031).After the sectional specification number has been described in the detail specification, itwill be considered a contractual part of the order.The manufacturer's chief inspector shall retain a copy of each completed detail specifi-cation which has been allocated such a reference.1.14 Quality conformance inspectionComponents ordered following the allocation of a manufacturer's reference number (e.g.QC 260X00/FRR/2031) to a completed detail specification shall be subjected to the testsdescribed in that specification in accordance with the advice given in the relevantsectional specification.NOTE — The tests to be carried out with their associated inspection levels and AQLs will be largely deter-mined by the customer's requirements, subject always to the agreement of the manufacturer (see 1.13).2 TestsTests specified in the capability approval schedules in this specification and listed in thedetail specification (blank versions of which are recommended in the correspondingsectional specifications) shall be selected from and carried out in accordance withIEC 1007 supplemented as required by tests from IEC 68-2.3 Capability approval procedures3.1 Eligibility for capability approvalThe primary stage of manufacture and all subsequent stages are to come under the directsurveillance of the approved chief inspector. The primary stage of manufacture shall becoil winding.NOTE — Before supplying transformers or inductors in accordance with this specification, a manufactureris required to obtain the approval of his inspection organization and facilities, followed by approval of hisdesign and manufacturing capability, in accordance with clause 10 of QC 001002.SIST EN 61248-1:2002
1248-1 © I EC:1996– 21 —3.2 Application for capability approval3.2.1 GeneralIn making application for capability approval, the manufacturer shall describe the scope ofeach production capability for which approval is sought, in terms of the climatic categorythat the components are intended to withstand, the core type, the range of their mass andtypes of construction, in accordance with 3.2.2.1, 3.2.2.2, 3.2.2.3 and 3.2.2.4 respectively.Additional boundaries to the scope of a manufacturer's approval, as described in 3.7.2 b),may also be claimed.3.2.2 Scope of capability3.2.2.1GeneralThe limits of the scope of each capability shall be described as specified in 3.2.2.2 to3.2.2.6.3.2.2.2Environmental characteristicsIn seeking capability approval for a component, the manufacturer shall state the mostsevere climatic and dynamic categories the component will withstand, by specifying theminimum ambient temperature, the maximum ambient temperature, the duration ofexposure to damp heat, the maximum bump and the maximum vibration from the valueslisted in 1.12 a), b), c), e) and f).Additional environment category claims may be made for the maximum shock, maximumsteady state acceleration and low air pressure with the values taken from 1.12 d), g)and h).3.2.2.3Core typeThe manufacturer shall state the range of core types for which approval is sought.NOTE — Examples of core types are as follows:a)laminated cores (LC);b)strip-wound cut cores (CC);c)metallic ring-cores (RC);d)ferrite cores (FC);e)non-magnetic cores (NC).(Non-magnetic implies air or a diamagnetic material.)3.2.2.4 Range of massThe manufacturer shall state the minimum and maximum mass (in kilograms) of thecomponents for which capability approval is sought.3.2.2.5Type of constructionThe manufacturer shall state the range of types of construction for which approval issought, which may limit a component's claimed ability to withstand the stated mechanicalenvironments.SIST EN 61248-1:2002
1248-1 ©IEC:1996- 23 -NOTE 1 – Typical groups of types of construction for various core types are shown below; for appraisal,each group will require expansion to cover the manufacturer's range (see 3.4.1.2 b)). Where ferrite or ring-cores are employed in addition to laminated or strip-wound cut cores, this should be clearly stated.Examples of groups of types are as follows:a) Laminated cores1)bolted end frames and shrouds; 2, 4 or 6 clamping bolts;2)U-clamp with and without base plates;3)direct printed wiring board mounting, including integral fixings;4)various clamping bars and plates.b) Strip-wound cut cores1)bolted end frames and shrouds;2)pattern H and J assemblies (see IEC 852-5);3)hermetically sealed assemblies;4)various clamping bars and plates.c) Ring-cores–various clamping methods.d) Ferrite cores1)printed wiring board mounting; integral pins;2)printed wiring board mounting; intermediate panel;3)stud mounted with metal casing;4)various clamping plates, separate brackets and adhesives.e) Non-magnetic cores (including air)–various mounting methods.NOTE 2 – Surface mounting technology may be applied in each of the above core types.3.2.2.6 Form of statementThe scope of each production capability for which approval is sought shall be described,e.g. components having ring-cores, capable of withstanding climatic category 40/070/21(see note to 1.12 a), b) and c)), having a range of mass between 0,2 kg and 2 kg.3.2.3 Add-on and built-in componentsWhere the final component contains other components which themselves are covered byIEC generic specifications, it is desirable that these be released in accordance with thesystem.Where any contained component is not so released, the final manufacturer's chief inspectorshall be satisfied that its quality is adequate, by use of:a)a procurement specification;b)approval tests, andc)incoming inspection procedures.Examples of such components are add-on components, such as capacitors associatedwith constant voltage transformers, and built-in components, such as ferrite cores. Inaddition to the above requirements, add-on components shall be either electrically ormechanically attached or suitably identified.NOTE – Ferrite cores are covered by the IEC 723 (QC 250000) series of specifications.SIST EN 61248-1:2002
1248-1 ©IEC:1996– 25 –3.3 Description of capabilityA manufacturer wishing to have his ability to supply components complying with thisspecification recognized shall comply with QC 001002 and shall demonstrate to thesatisfaction of the NSI that suitable testing facilities are available, either by providing themhimself or by making arrangements for testing to be carried out by an approved testlaboratory. These testing facilities shall be appropriate to the use for which componentsare intended, e.g. signal, power or pulse application.The manufacturer shall supply to the NSI and to the latter's satisfaction a description ofcapability preferably in the form of a capability manual. This document shall be confi-dential between the manufacturer and the NSI, and the NSI shall undertake to safeguardany of the contents of such a document from transmission to a third party.This description of capability shall, either directly or by reference to the manufacturer'sinternal documents:a)identify the boundaries of the capability for which he is seeking approval and whichhe is prepared to demonstrate in the capability approval tests;b)prescribe the design disciplines and process control specifications appropriate tothe range of products and manufacturing methods;c)list the specifications for any materials necessary to maintain the quality of therange of products and the means of verification;d)provide a brief description of the salient features of the method of construction;e)provide a process flow chart clearly related to the prescribed design data andprocess control specifications, showing all the aspects of the capability for whichapproval is requested.3.4 Appraisal of capability3.4.1 Capability qualifying components (CQC)3.4.1.1 A sample of six components, three of maximum mass and three of minimummass, from each core type as defined in 3.2.2.3, shall be used to assess the claimedcapability.3.4.1.2 Test specimens shall be selected in accordance with a) and b) as follows:a)Where more than one significantly different type of environmental protection isemployed, e.g. oil filling or a method of resin casting, then three additional specimensselected by agreement between the manufacturer and the NSI to be the worst case willbe required for each type of protection not assessed by components requiredby 3.4.1.1.b)With the agreement of the NSI, the manufacturer shall aggregate his range ofproducts within the claimed capability into types of construction (see 3.2.2.5). Theaggregation shall be such that one component from each type of construction isselected to be the worst case for testing specimens claimed to be able to withstand thestated mechanical environments.SIST EN 61248-1:2002
1248-1 ©I EC:1996- 27 -Components, otherwise required by 3.4.1.2 b), but already selected by the requirementsof 3.4.1.1 and 3.4.1.2 a), and that are required to meet the test requirements of schedules1, 2A and 2C, shall not be required for further testing by 3.4.1.2 b).NOTE — Where significantly different types of environmental protection and types of construction havebeen assessed to the satisfaction of the NSI on CQCs of one core type as required by 3.4.1.2 a) and3.4.1.2 b), then these features will not require additional assessment using CQCs from the remaining coretypes.3.4.1.3 Where the test components are designed and produced solely for the purpose ofobtaining capability approval, the manufacturer shall satisfy the NSI that the same controlsand discipline will be applied to normal production in accordance with the capabilitymanual.3.4.1.4 Components without a prescribed method of mounting or unable to withstandfour days damp heat shall not be considered as capability qualifying components.3.4.2 CQC test schedules3.4.2.1GeneralAll the CQCs shall be subjected to the tests given in schedule 1 (see 3.4.3) in the ordershown and shall comply with the requirements specified therein.Two of the specimens, one of minimum mass and one of maximum mass for each coretype, as required by 3.4.1.1, and one specimen from each additional significantly differenttype of environmental protection as required by 3.4.1.2 a), shall be subjected to the testsgiven in schedule 2A (see 3.4.4) in the order shown and shall comply with the require-ments specified therein.Two of the specimens, one of maximum mass and one of minimum mass for each coretype, as required by 3.4.1.1, and one specimen from each additional significantly differenttype of environmental protection as required by 3.4.1.2 a) shall be subjected to the testsgiven in schedule 2B (see 3.4.5) in the order shown and shall comply with the require-ments specified therein.The remaining specimens, excluding those required by 3.4.1.2 b), shall be subjected tothe tests prescribed in schedule 2C (see 3.4.6) in the order specified and shall complywith the requirements specified therein.The specimens required by 3.4.1.2 b) shall be subjected to the tests contained inschedule 3 (see 3.4.7) in the order shown and shall comply with the requirementsspecified therein.3.4.2.2 Sample selection and test flow chart for the appraisal of capability (see table 1)Sequence a) of table 1 gives the number of CQCs for each schedule required for eachcore type (see 3.4.1.1).SIST EN 61248-1:2002
1248-1 ©IEC:1996- 29 -Sequence b) gives the number of CQCs for each schedule required for each significantlydifferent type of environmental protection that is not assessed by components insequence a) (see 3.4.1.2 a)).Sequence c) gives the number of CQCs for each schedule required for each type ofconstruction that is not assessed by sequences a) or b) (see 3.4.1.2 b)).3.4.2.3Failure procedureIn the event of failure, the manufacturer shall take either the action described in a) or thatdescribed in b), as follows.a) Initiate a failure
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