Bayonet lampholders (IEC 61184:2008)

This International Standard applies to bayonet lampholders B15d and B22d for connection of lamps and semi-luminaires to a supply voltage of 250 V. This standard also covers lampholders which are integral with a luminaire or intended to be built into appliances. It covers the requirements for the lampholder only. For all other requirements, such as protection against electric shock in the area of the terminals, the requirements of the relevant appliance standard shall be observed and tested after building into the appropriate equipment, when that equipment is tested according to its own standard. Lampholders for use by luminaire manufacturers only are not for retail sale. B15 denotes the cap/holder fit as defined by IEC 60061-1, sheet 7004-11 and IEC 60061-2, sheet 7005-16 with the corresponding gauges. B22 denotes the cap/holder fit as defined by IEC 60061-1, sheet 7004-10 and IEC 60061-2, sheet 7005-10 with the corresponding gauges.

Bajonett-Lampenfassungen (IEC 61184:2008)

Douilles à baïonnette (CEI 61184:2008)

La CEI 61184:2008 s'applique aux douilles à baïonnette B15d et B22d destinées à connecter les lampes et les semi-luminaires à une tension d'alimentation de 250 V. Cette norme couvre également les douilles qui sont intégrées dans un luminaire ou prévues pour être incorporées dans des appareils. Elle couvre uniquement les exigences applicables à la douille. Cette troisième édition annule et remplace la deuxième édition (1997) et ses Amendements 1 (2000) et 2 (2004). Cette troisième édition constitue une révision technique. Dans cette édition, des informations concernant les douilles destinées à être utilisées dans des applications où elles sont accessibles en utilisation normale (dans des luminaires de classe I comme de classe II) ont été introduites. De plus, dans le Tableau 11, les données de lampes des références de lampes qui n'existent plus ont été supprimées et des exigences pour les bagues support d'abat-jour ont été modifiées pour se mettre en accord avec les essais de la CEI 60399.
Le contenu des corrigendum de février 2009 et décembre 2012 ont été pris en considération dans cet exemplaire.

Bajonetni okovi za žarnice in sijalke (IEC 61184:2008)

General Information

Status
Withdrawn
Publication Date
13-Oct-2008
Withdrawal Date
31-Aug-2020
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
27-Aug-2020
Due Date
19-Sep-2020
Completion Date
01-Sep-2020

Relations

Effective Date
01-Dec-2008
Effective Date
01-Dec-2008
Effective Date
29-Jan-2023
Effective Date
01-Dec-2008
Effective Date
07-Jun-2022
Effective Date
29-Jan-2023
Effective Date
29-Jan-2023
Effective Date
29-Jan-2023
Effective Date
07-Jun-2022

Buy Standard

Standard
EN 61184:2008
English language
66 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bajonetni okovi za žarnice in sijalke (IEC 61184:2008)Bajonett-Lampenfassungen (IEC 61184:2008)Douilles à baïonnette (CEI 61184:2008)Bayonet lampholders (IEC 61184:2008)29.140.10Grla in držala žarnicLamp caps and holdersICS:Ta slovenski standard je istoveten z:EN 61184:2008SIST EN 61184:2008en,fr01-december-2008SIST EN 61184:2008SLOVENSKI
STANDARDSIST EN 61184:1999/A2:2005SIST EN 61184:1999/A1:2003SIST EN 61184:19991DGRPHãþD



SIST EN 61184:2008



EUROPEAN STANDARD EN 61184 NORME EUROPÉENNE
EUROPÄISCHE NORM September 2008
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61184:2008 E
ICS 29.140.10 Supersedes EN 61184:1997 + A1:2001 + A2:2004
English version
Bayonet lampholders (IEC 61184:2008)
Douilles à baïonnette (CEI 61184:2008)
Bajonett-Lampenfassungen (IEC 61184:2008)
This European Standard was approved by CENELEC on 2008-08-01. 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 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 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, Bulgaria, 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, Switzerland and the United Kingdom.
SIST EN 61184:2008



EN 61184:2008
– 2 – Foreword The text of document 34B/1385/FDIS, future edition 3 of IEC 61184, prepared by SC 34B, Lamp caps and holders, of IEC TC 34, Lamps and related equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61184 on 2008-08-01. This European Standard supersedes EN 61184:1997 + A1:2001 + A2:2004. The significant technical changes with respect to EN 61184:1997 are as follows: In EN 61184:2008, information to lampholders intended to be used in applications where they are accessible in normal use (class II as well as class I luminaires) are introduced. Additionally, in Table 11, lamp data where lamps no longer exist has been removed and requirements for shade holder rings have been amended to include shade rings according to EN 60399 into testing. 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) 2009-05-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow) 2011-08-01 In this standard, the following print types are used: – requirements proper: in roman type; – test specifications: in italic type; – notes: in small roman type. Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61184:2008 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 60061-4 NOTE
Harmonized as EN 60061-4:1992 (modified). IEC 60238 NOTE
Harmonized as EN 60238:2004 (not modified). IEC 61058-1 NOTE
Harmonized as EN 61058-1:2002 (modified). __________ SIST EN 61184:2008



– 3 – EN 61184:2008
Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
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.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60061
(mod) Series Lamp caps and holders together with
gauges for the control of interchangeability and safety
EN 60061 Series
IEC 60061-1
(mod) - 1) Lamp caps and holders together with gauges for the control of interchangeability and safety -
Part 1: Lamp caps EN 60061-1
1993 2)
IEC 60061-2
(mod) - 1) Lamp caps and holders together with
gauges for the control of interchangeability and safety -
Part 2: Lampholders EN 60061-2 1993 2)
IEC 60061-3 (mod) - 1) Lamp caps and holders together with
gauges for the control of interchangeability and safety -
Part 3: Gauges EN 60061-3 1993 2)
IEC 60064
(mod) - 1) Tungsten filament lamps for domestic and similar general lighting purposes - Performance requirements EN 60064 + A11 1995 2)2007
IEC 60068-2-75 1997 Environmental testing -
Part 2-75: Tests - Test Eh: Hammer tests EN 60068-2-75 1997
IEC 60112
2003 Method for the determination of the proof and the comparative tracking indices of solid insulating materials EN 60112 2003
IEC 60227 (mod) Series Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V
- 3) -
IEC 60245 (mod) Series Rubber insulated cables - Rated voltages up to and including 450/750 V
- 4) -
IEC 60399 - 1) Barrel thread for lampholders with shade holder ring EN 60399 2004 2)
IEC 60417 Data base Graphical symbols for use on equipment - -
IEC 60432
(mod) Series Incandescent lamps - Safety specifications
EN 60432 Series
1) Undated reference.
2) Valid edition at date of issue.
3) The HD 21 series, which is related to, but not directly equivalent with the IEC 60227 series, applies instead.
4) The HD 22 series, Cables of rated voltages up to and including 450/750 V and having cross-linked insulation, which is related to,
but not directly equivalent with the IEC 60245 series, applies instead. SIST EN 61184:2008



EN 61184:2008
– 4 – Publication Year Title EN/HD Year
IEC 60529 1989 Degrees of protection provided by
enclosures (IP Code) EN 60529 + corr. May
1991 1993
IEC 60598-1 (mod) - 1) Luminaires -
Part 1: General requirements and tests EN 60598-1 200X 5)
IEC 60664-1 2007 Insulation coordination for equipment within low-voltage systems -
Part 1: Principles, requirements and tests EN 60664-1 2007
IEC 60695-2-11
2000 Fire hazard testing -
Part 2-11: Glowing/hot-wire based test methods - Glow-wire flammability test method for end-products EN 60695-2-11 2001
IEC 60695-11-5
2004 Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance EN 60695-11-5 2005
ISO 4046-4 2002 Paper, board, pulps and related terms - Vocabulary -
Part 4: Paper and board grades and converted products - -
5) To be ratified.
SIST EN 61184:2008



IEC 61184Edition 3.0 2008-07INTERNATIONAL STANDARD NORME INTERNATIONALEBayonet lampholders
Douilles à baïonnette
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XBICS 29.140.10 PRICE CODECODE PRIXISBN 2-8318-9889-7
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale SIST EN 61184:2008



– 2 – 61184 © IEC:2008 CONTENTS FOREWORD.4 INTRODUCTION.6 1 General.7 1.1 Scope.7 1.2 Normative references.7 2 Terms and definitions.8 2.1 Materials.8 2.2 Means of fixing.8 3 General requirements.12 4 General conditions for tests.12 5 Standard ratings.13 5.1 Standard rated voltage.13 5.2 Standard rated currents.14 6 Classification.14 7 Marking.15 8 Dimensions.17 9 Protection against electric shock.18 10 Terminals.19 11 Provision for earthing.21 12 Construction.22 13 Switched lampholders.27 14 Moisture resistance, insulation resistance and electrical strength.28 15 Mechanical strength.30 16 Screws, current-carrying parts and connections.34 17 Creepage distances and clearances.34 18 General resistance to heat.35 19 Resistance to heat, fire and tracking.40 20 Resistance to excessive residual stresses (season cracking) and to rusting.42 Annex A (normative)
Season cracking/corrosion test.60 Bibliography.62
Figure 1 – Loading device (see 15.1).44 Figure 2 – Bending apparatus (see 15.4).45 Figure 3 – Gauge for holes for backplate lampholders screws (see 12.11).46 Figure 4 – Clarification of some of the definitions in Clause 2.47 Figure 5 – Test cap B15d (see 18.3).48 Figure 6 – Test cap B22d (see 18.3).49 Figure 7 – Testing device (see 9.1).50 Figure 8 – Dimensions for shade support devices (see 8.1).51 Figure 9 – Dimensions for protective shields for B22d lampholders (see 9.1).52 Figure 10 – Test cap B15d (see 14.3).53 SIST EN 61184:2008



61184 © IEC:2008 – 3 – Figure 11 – Test cap B22d (see 14.3).54 Figure 12 – Typical apparatus for the heating test (see 18.5).55 Figure 13 – Nipple thread for lampholders – Basic profile and design profile
for the nut and for the screw.56 Figure 14 – Gauges for metric ISO thread for nipples.57 Figure 15 – Impact-test apparatus.58 Figure 16 – Mounting support.58 Figure 17 – Ball-pressure test apparatus.59 Figure 18 – Pressure apparatus.59
Table 1 – Dimensions of threaded entries and set screws.18 Table 2 – Minimum dimensions of pillar type terminals.20 Table 3 – Limits for contact forces.23 Table 4 – Pull and torque values.26 Table 5 – Heights of fall.32 Table 6 – Maximum deformation values.33 Table 7 – Torque values.34 Table 8 – Minimum distances for a.c. (50/60 Hz) sinusoidal voltages – Impulse withstand category II.35 Table 9 – Heating cabinet temperature.36 Table 10 – Heating cabinet temperature.37 Table 11 – Test temperature and test lamp data.39 Table A.1 – Ph adjustment.60
SIST EN 61184:2008



– 4 – 61184 © IEC:2008 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
BAYONET LAMPHOLDERS
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61184 has been prepared by subcommittee 34B: Lamp caps and holders, of IEC technical committee 34: Lamps and related equipment. This third edition cancels and replaces the second edition (1997) and its Amendments 1 (2000) and 2 (2004). This third edition constitutes a technical revision. In this edition, information to lampholders intended to be used in applications where they are accessible in normal use (class II as well as class I luminaires) are introduced. Additionally, in Table 11, lamp data where lamps no longer exist has been removed and requirements for shade holder rings have been amended to include shade rings according to IEC 60399 into testing. The text of this standard is based on the following documents: FDIS Report on voting 34B/1385/FDIS 34B/1401/RVD
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. SIST EN 61184:2008



61184 © IEC:2008 – 5 – In this standard, the following print types are used: – requirements proper: in roman type; – test specifications: in italic type; – notes: in small roman type. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be
• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
SIST EN 61184:2008



– 6 – 61184 © IEC:2008 INTRODUCTION This standard covers safety requirements for bayonet lampholders and includes references to IEC 60061 for the control of interchangeability and safety of the cap and holder fit. NOTE Safety requirements ensure that electrical equipment constructed in accordance with these requirements does not endanger the safety of persons, domestic animals or property when properly installed and maintained and used in applications for which it was intended. The thermal characteristics of lampholders are specified by the rated operating temperature (symbol T), which is the highest temperature for which the lampholder is designed. The temperature rating and the resistance to heat specified in this standard are based on two different principles, as presently found in IEC 60238 for Edison screw lampholders and in other national standards for bayonet lampholders. After experience, it may be possible to rationalize the systems in future editions of this standard. SIST EN 61184:2008



61184 © IEC:2008 – 7 – BAYONET LAMPHOLDERS
1 General 1.1 Scope This International Standard applies to bayonet lampholders B15d and B22d for connection of lamps and semi-luminaires to a supply voltage of 250 V. This standard also covers lampholders which are integral with a luminaire or intended to be built into appliances. It covers the requirements for the lampholder only. For all other requirements, such as protection against electric shock in the area of the terminals, the requirements of the relevant appliance standard shall be observed and tested after building into the appropriate equipment, when that equipment is tested according to its own standard. Lampholders for use by luminaire manufacturers only are not for retail sale. NOTE Where lampholders are used in luminaires, their maximum operating temperatures are specified in IEC 60598-1. B15 denotes the cap/holder fit as defined by IEC 60061-1, sheet 7004-11 and IEC 60061-2, sheet 7005-16 with the corresponding gauges. B22 denotes the cap/holder fit as defined by IEC 60061-1, sheet 7004-10 and IEC 60061-2, sheet 7005-10 with the corresponding gauges. 1.2 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. IEC 60061 (all parts), Lamp caps and holders together with gauges for the control of interchangeability and safety IEC 60061-1, Lamp caps and holders together with gauges for the control of interchangeability and safety –
Part 1: Lamp caps IEC 60061-2, Lamp caps and holders together with gauges for the control of interchangeability and safety – Part 2: Lampholders IEC 60061-3, Lamp caps and holders together with gauges for the control of interchangeability and safety – Part 3: Gauges IEC 60064, Tungsten filament lamps for domestic and similar general lighting purposes –Performance requirements IEC 60068-2-75:1997, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60112:2003, Method for the determination of the proof and the comparative tracking indices of solid insulating materials IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V SIST EN 61184:2008



– 8 – 61184 © IEC:2008 IEC 60245 (all parts), Rubber insulated cables – Rated voltages up to and including
450/750 V IEC 60399, Barrel thread for lampholders with shade holder ring IEC 60417, Graphical symbols for use on equipment
IEC 60432 (all parts), Incandescent lamps – Safety specifications IEC 60529:1989, Degrees of protection provided by enclosures (IP Code) IEC 60598-1, Luminaires – Part 1: General requirements and tests IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1: Principles, requirements and tests IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods – Glow-wire flammability test method for end-products
IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method – Apparatus, confirmatory test arrangement and guidance ISO 4046-4:2002, Paper, board, pulps and related terms – Vocabulary – Part 4: Paper and board grades and converted products 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE For clarification of some definitions, see also Figure 4. 2.1 Materials 2.1.1 plastic lampholder lampholder, the exterior of which is made wholly of plastic material NOTE The exterior is any part of the lampholder which, when wired and fully assembled and fitted with the testing device shown in Figure 7, can be touched directly by the standard test finger of IEC 60529. 2.1.2 ceramic lampholder lampholder, the exterior of which is made wholly of ceramic material (see note to 2.1.1) 2.1.3 metal lampholder lampholder, the exterior of which is made wholly or partly of metal (see note to 2.1.1) 2.2 Means of fixing 2.2.1 cord grip lampholder lampholder incorporating a method of retaining a flexible cord by which it may be suspended (see Figure 4a) SIST EN 61184:2008



61184 © IEC:2008 – 9 – 2.2.2 threaded entry lampholder lampholder incorporating a threaded component at the point of entry of the supply wires permitting the lampholder to be mounted on a mating threaded support (formerly called nipple lampholder) (see Figure 4b) 2.2.3 backplate lampholder lampholder so designed as to be suitable for mounting, by means of an associated or integral backplate, directly on to a supporting surface or appropriate box (see Figure 4c) 2.3
terminal/contact assembly part or assembly of parts which provides a means of connection between the termination of a supply conductor and the contact-making surfaces of the corresponding lamp cap as well as resilient means to maintain contact pressure a) rising type, where the terminal is allowed to rise parallel with the lamp axis on insertion of a lamp cap; b) non-rising type, where the terminal is not allowed to rise on insertion of a lamp cap NOTE The terminal and the barrel may be a unique element. 2.4
union ring cylindrical component which joins together separate external parts of the lampholder 2.5
shade ring cylindrical component having an internal thread or other means to engage a corresponding support on the outer shell and intended to carry or retain a shade 2.6
skirt (plastic lampholders only) component similar to a shade ring but having a longer cylindrical form to extend to the full length of the lampholder body 2.6.1 protective shield (plastic lampholders only) component similar to a skirt but having a flared open end to protect the user from accidental contact with the lamp cap (see Figure 9) 2.7
dome part of a cord grip lampholder or threaded entry lampholder which shields the connecting terminals 2.8
barrel part of a lampholder which serves for mechanical connection of the lamp cap with the lampholder 2.9
lampholder for building-in lampholder designed to be built into a luminaire, an additional enclosure or the like SIST EN 61184:2008



– 10 – 61184 © IEC:2008 2.9.1
unenclosed lampholder lampholder for building-in so designed that it requires additional means, for example enclosures, to meet the requirements of this standard with regard to protection against electric shock 2.9.2
enclosed lampholder lampholder for building-in so designed that, on its own, it fulfils the requirements of this standard with regard to protection against electric shock and, if appropriate, IP classification 2.10
independent lampholder lampholder so designed that it can be mounted separately from a luminaire and at the same time provide all the necessary protection according to its classification and marking 2.11
switched lampholder lampholder provided with an integral switch to control the supply to the lamp 2.12
basic insulation insulation applied to live parts to provide basic protection against electric shock NOTE Basic insulation does not necessarily include insulation used exclusively for functional purposes. 2.13
supplementary insulation independent insulation applied in addition to basic insulation in order to provide protection against electric shock in the event of a failure of basic insulation 2.14
double insulation insulation comprising both basic insulation and supplementary insulation 2.15
reinforced insulation single insulation system applied to live parts which provides a degree of protection against electric shock equivalent to double insulation under the conditions specified NOTE The term "insulation system" does not imply that the insulation must be one homogeneous piece. It may comprise several layers which cannot be tested singly as supplementary or basic insulation. 2.16
live part conductive part which may cause an electric shock in normal use
The neutral conductor is, however, regarded as a live part. The test to determine whether or not a conductive part is a live part which may cause an electric shock is given in Annex A of IEC 60598-1. SIST EN 61184:2008



61184 © IEC:2008 – 11 – 2.17
type test test or series of tests made on a type test specimen for the purpose of checking compliance of the design of a given product with the requirements of the relevant standard 2.18
type test sample sample consisting of one or more similar specimens submitted by the manufacturer or responsible vendor for the purpose of a type test 2.19
semi-luminaire unit similar to a self-ballasted lamp but designed to utilize a replaceable light source and/or starting device 2.20
rated operating temperature highest temperature for which the lampholder is designed 2.21
rated pulse voltage highest peak of pulse voltages that the holder is able to withstand 2.22 impulse withstand category numeral defining a transient overvoltage condition NOTE Impulse withstand categories I, II, III
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.