Incandescent lamps - Safety specifications - Part 1: Tungsten filament lamps for domestic and similar general lighting purposes

IEC 60432-1:1999+A1:2005+A2:2011 specifies the safety and interchangeability requirements of tungsten filament incandescent lamps for general lighting service having:
- rated wattage up to and including 200 W;
- rated voltage of 50 V to 250 V inclusive;
- bulbs of the A, B, C, G, M, P, PS, PAR or R shapes* , or other bulb shapes where the lamps are intended to serve the same purpose as lamps with the foregoing bulb shapes;
- bulbs with all kinds of finishes;
- caps B15d, B22d, E12, E14, E17, E26** , E26d, E26/50x39, E27 or E27/51x39. The technical content is therefore identical to the base edition and its amendments and has been prepared for user convenience. It bears the edition number 2.2. A vertical line in the margin shows where the base publication has been modified by amendments 1 and 2. This consolidated version consists of the second edition (1999), its amendment 1 (2005) and its amendment 2 (2011). Therefore, no need to order amendments in addition to this publication.

Lampes à incandescence - Prescriptions de sécurité - Partie 1: Lampes à filament de tungstène pour usage domestique et éclairage général similaire

La CEI 60432-1:1999+A1:2005+A2:2011 fournit les prescriptions de sécurité et d'interchangeabilité relatives aux lampes à filament de tungstène pour éclairage général ayant:
- une puissance assignée égale ou inférieure à 200 W;
- une tension assignée comprise entre 50 V et 250 V (limites incluses);
- des ampoules de l'une des formes* A, B, C, G, M, P, PS, PAR ou R, ou d'une autre forme pourvu que, dans ce cas, les lampes soient prévues pour remplir les mêmes fonctions que celles équipées d'ampoules correspondant aux symboles littéraux précédents;
- des ampoules avec tous les types de finition;
- des culots B15d, B22d, E12, E14, E17, E26** , E26d, E26/50x39, E27 ou E27/51x39. Le contenu technique de cette version consolidée est donc identique à celui de l'édition de base et à ses amendements; cette version a été préparée par commodité pour l'utilisateur. Elle porte le numéro d'édition 2.2. Une ligne verticale dans la marge indique où la publication de base a été modifiée par les amendements 1 et 2.  Cette version consolidée comprend la deuxième édition (1999), son amendement 1 (2005) et son amendement 2 (2011). Il n'est donc pas nécessaire de commander les amendements avec cette publication.

General Information

Status
Published
Publication Date
09-Feb-2012
Current Stage
PPUB - Publication issued
Start Date
10-Feb-2012
Completion Date
10-Feb-2012
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IEC 60432-1
Edition 2.2 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Incandescent lamps – Safety specifications –
Part 1: Tungsten filament lamps for domestic and similar general lighting
purposes
Lampes à incandescence – Prescriptions de sécurité –
Partie 1: Lampes à filament de tungstène pour usage domestique et éclairage
général similaire
IEC 60432-1:1999+A1:2005+A2:2011
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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---------------------- Page: 2 ----------------------
IEC 60432-1
Edition 2.2 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Incandescent lamps – Safety specifications –
Part 1: Tungsten filament lamps for domestic and similar general lighting
purposes
Lampes à incandescence – Prescriptions de sécurité –
Partie 1: Lampes à filament de tungstène pour usage domestique et éclairage
général similaire
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX CP
ICS 29.140.20 ISBN 978-2-88912-878-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 60432-1 © IEC:1999+A1:2005
+A2:2011
CONTENTS

FOREWORD ........................................................................................................................... 3

1 General ............................................................................................................................ 5

1.1 Scope ...................................................................................................................... 5

1.2 Normative references .............................................................................................. 6

1.3 Definitions ............................................................................................................... 6

2 Requirements ................................................................................................................... 8

2.1 General ................................................................................................................... 8

2.2 Marking ................................................................................................................... 8

2.3 Protection against accidental contact in screw lampholders ...................................... 9

2.4 Lamp cap temperature rise (Dt ) ............................................................................ 10

2.5 Resistance to torque .............................................................................................. 10

2.6 Insulation resistance of B15d, B22d, E26/50´39 and E27/51´39 capped lamps

and other lamps having insulated skirts ................................................................. 12

2.7 Accidentally live parts ............................................................................................ 13

2.8 Creepage distances for B15d and B22d capped lamps ........................................... 13

2.9 Safety at end of life ................................................................................................ 13

2.10 Interchangeability .................................................................................................. 14

2.11 Information for luminaire design ............................................................................. 14

3 Assessment .................................................................................................................... 14

3.1 General ................................................................................................................. 14

3.2 Whole production assessment by means of the manufacturer’s records ................. 15

3.3 Assessment of the manufacturer’s records of particular tests ................................. 16

3.4 Rejection conditions of batches .............................................................................. 16

3.5 Sampling procedures for whole production testing .................................................. 17

3.6 Sampling procedures for batch testing ................................................................... 19

Annex A (normative) Miscellaneous test procedures ............................................................ 20

Annex B (normative) Packaging marking symbols................................................................ 21

Annex C (normative) Resistance to torque test procedures .................................................. 22

Annex D (normative) Induced-failure test ............................................................................. 25

Annex E (normative) Operation-to-failure test ...................................................................... 28

Annex F (normative) Acceptance numbers for various sample sizes and AQLs .................... 30

Annex G (normative) Acceptance criteria – Continuously variable results ............................. 36

Annex H (normative) Induced-failure test – Grouping, sampling and compliance .................. 38

Annex J (normative) Method of measuring mains impedance ............................................... 42

Annex K (informative) Information for luminaire design ........................................................ 44

---------------------- Page: 4 ----------------------
60432-1 © IEC:1999+A1:2005 – 3 –
+A2:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INCANDESCENT LAMPS –
SAFETY SPECIFICATIONS –
Part 1: Tungsten filament lamps for domestic and
similar general lighting purposes
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

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 60432-1 has been prepared by subcommittee 34A: Lamps, of IEC

technical committee 34: Lamps and related equipment.

This consolidated version of IEC 60432-1 consists of the second edition (1999) [documents

34A/873/FDIS and 34A/887/RVD], its amendment 1 (2005) [documents 34A/1118/FDIS and

34A/1127/RVD] and its amendment 2 (2011) [documents 34A/1475/CDV and 34A/1519/RVC].

The technical content is therefore identical to the base edition and its amendments and has

been prepared for user convenience.
It bears the edition number 2.2.

A vertical line in the margin shows where the base publication has been modified by

amendments 1 and 2.
---------------------- Page: 5 ----------------------
– 4 – 60432-1 © IEC:1999+A1:2005
+A2:2011
Annexes A through J form an integral part of this standard.
Annex K is for information only.

The committee has decided that the contents of the base publication and its amendments will

remain unchanged until the stability 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.
---------------------- Page: 6 ----------------------
60432-1 © IEC:1999+A1:2005 – 5 –
+A2:2011
INCANDESCENT LAMPS –
SAFETY SPECIFICATIONS –
Part 1: Tungsten filament lamps for domestic and
similar general lighting purposes
1 General
1.1 Scope

International Standard IEC 60432-1 specifies the safety and interchangeability requirements of

tungsten filament incandescent lamps for general lighting service having:
– rated wattage up to and including 200 W;
– rated voltage of 50 V to 250 V inclusive;

– bulbs of the A, B, C, G, M, P, PS, PAR or R shapes , or other bulb shapes where the

lamps are intended to serve the same purpose as lamps with the foregoing bulb shapes;

– bulbs with all kinds of finishes;
– caps B15d, B22d, E12, E14, E17, E26 , E26d, E26/50´39, E27 or E27/51´39.

As far as is reasonably practicable, this standard is also applicable to lamps with bulbs and

caps other than those mentioned above, but which serve the same purpose.

This standard specifies the method a manufacturer should use to show that his product

conforms to this standard on the basis of whole production appraisal in association with his test

records on finished products. This method can also be applied for certification purposes.

Details of a batch test procedure which can be used to make limited assessment of batches

are also given.
This part of IEC 60432 covers photobiological safety according to IEC 62471 and

IEC/TR 62471-2. Lamps covered by this part of IEC 60432 do not reach risk levels that require

risk group marking.

This standard is concerned with safety criteria only and does not take into account the

performance of tungsten filament lamps with respect to luminous flux, life or power

consumption characteristics. Readers should refer to IEC 60064 for such characteristics with

respect to types normally used for general lighting service.
__________

See IEC 60887 for description of the letter symbols. Associated traditional names are:

– Pear shape = A, PS
– Mushroom = M
– Candle = B, C (in North America)
– Round bulb = P
– Globular = G
– Reflector = R
– Parabolic reflector = PAR

There are two variations of E26 caps which are not fully compatible. In this standard separate references are

made to E26/24 caps used in North America and E26/25 caps used in Japan.
---------------------- Page: 7 ----------------------
– 6 – 60432-1 © IEC:1999+A1:2005
+A2:2011
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 60061-1: Lamp caps and holders together with gauges for the control of interchangeability

and safety – Part 1: Lamp caps

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 60360: Standard method of measurement of lamp cap temperature rise
IEC 60410: Sampling plans and procedures for inspection by attributes

IEC 60432-2: Incandescent lamps – Safety specification – Part 2: Tungsten halogen lamps for

domestic and similar general lighting purposes
IEC 60598-1: Luminaires – Part 1: General requirements and tests
IEC 60887: Glass bulb designation system for lamps
IEC 62471, Photobiological safety of lamps and lamp systems

IEC/TR 62471-2, Photobiological safety of lamps and lamp systems – Part 2: Guidance on

manufacturing requirements relating to non-laser optical radiation safety

ISO 3951: Sampling procedures and charts for inspection by variables for percent non-

conforming
1.3 Definitions
For the purpose of this International Standard the following definitions apply.
1.3.1
category

all lamps of one manufacturer having the same general construction (bulb shape, external

dimensions, cap type, filament type), rated voltage, rated wattage and finish
For the purposes of this standard:

a) clear, frosted and coatings equivalent to a frosted finish are considered to be the same;

b) various coloured and white finishes are not considered to be the same.

NOTE Lamps differing only by their caps (e.g. E27 and B22d) are of different “categories”, but of the same “type”

as defined in IEC 60064.
1.3.2
type

lamps which, independent of the type of cap, are identical in photometric and electrical

characteristics
---------------------- Page: 8 ----------------------
60432-1 © IEC:1999+A1:2005 – 7 –
+A2:2011
1.3.3
class

all lamps of one manufacturer having the same general construction (bulb shape, external

dimensions, cap type, filament type), rated wattage and finish and differing only by their rated

voltages, when these voltages fall within the same voltage range (e.g. 100 V to 150 V, 200 V

to 250 V)
1.3.4
rated voltage

voltage or voltage range specified in the relevant lamp standard or assigned by the

manufacturer or responsible vendor

(If lamps are marked with a voltage range, it shall be interpreted that they are appropriate for

use on any supply voltage within that range.)
1.3.5
test voltage
rated voltage unless otherwise specified

(If lamps are marked with a voltage range, the test voltage shall be taken as the mean of the

voltage range unless otherwise specified.)
1.3.6
rated wattage

wattage specified in the relevant lamp standard or assigned by the manufacturer or responsible

vendor
1.3.7
end of life
instant when the energized lamp ceases to emit light
1.3.8
cap temperature rise (Dt )

surface temperature rise, above ambient temperature, of a standard test lampholder fitted

to the lamp’s cap, when measured in accordance with the standard method described in

IEC 60360
1.3.9
design test

test made on a sample, for the purposes of checking compliance of the design of a category,

class or group of categories with the requirements of the relevant clause
1.3.10
periodic test

test repeated at intervals in order to check that the product does not deviate in certain respects

from the given design
1.3.11
running test
test applied at frequent intervals in order to provide data for assessment
1.3.12
batch

all the lamps of one category, identified as such, and put forward at one time for checking

compliance
---------------------- Page: 9 ----------------------
– 8 – 60432-1 © IEC:1999+A1:2005
+A2:2011
1.3.13
whole production

production of all types of lamps within the scope of this standard manufactured during a period

of 12 months and nominated by the manufacturer in a list for inclusion in the control, this list

being incorporated in the certificate when certification is in operation
1.3.14
bowl mirror lamp

lamp with part of its bulb coated with reflecting material so as to reflect a substantial part of the

light in the general direction of the lamp cap
1.3.15
maximum cap temperature

maximum temperature which the components in the cap area of a lamp are designed to

withstand over the expected life of the lamp
1.3.16
lamp neck reference diameter

that diameter of a lamp which is of influence on the protection against accidental contact and

which is measured at a defined distance from the solder contact plate
For E14 capped lamps, this distance is 30 mm.
2 Requirements
2.1 General

Lamps shall be so designed and constructed that in normal use they present no danger to the

user or surroundings.
Lamps shall satisfy the requirements of this clause.
2.2 Marking
2.2.1 Mandatory markings

The following information shall be marked on the lamps and shall be legible and durable when

subjected to the test procedure in A.1:

a) mark of origin (this may take the form of a trade mark, the manufacturer’s name or the

name of responsible vendor);
b) the rated voltage or the rated voltage range, marked as “V” or “volts”;
c) the rated wattage, marked as “W” or “watts”.

For lamps with 40 mm diameter bulbs or larger and with a realized wattage of 14 W or less, the

wattage need not be marked.

The rated voltage marking for lamps intended for use on United Kingdom supply voltages may

be 240 volts or 240 V.

NOTE The United Kingdom implementation of 230 V European harmonization process allows supply voltages to

remain at 240 V.
---------------------- Page: 10 ----------------------
60432-1 © IEC:1999+A1:2005 – 9 –
+A2:2011
2.2.2 Dichroic reflectorized (cool beam) lamps and bowl mirror lamps

The immediate lamp wrapping or container shall be marked with the relevant symbol as shown

in annex B.
2.2.3 Lamps with operating position limitations

For lamps requiring operating position limitations, such as some 60 W candle and round bulb

lamps capped with B22d or E27 caps which can comply with the requirement of the lamp cap

temperature rise only by excluding the cap-up position, the immediate lamp wrapping or

container shall be marked with the appropriate symbol. An example is shown in annex B.

NOTE The requirements in 2.2.2 and 2.2.3 are intended as information for the end-user of the lamp.

2.3 Protection against accidental contact in screw lampholders

Dimensions of screw capped lamps shall be such that safety against accidental contact is

ensured according to IEC 60061.

The lamps shall satisfy the gauges, defined in IEC 60061-3 in accordance with table 1.

Table 1 – Gauges for checking lamps for protection against
accidental contact
Lamp cap Gauge sheet No. Lamp cap Gauge sheet No.
E12 – E26d 7006-29A
E14 see 2.3.1 E27/25 and E27/27 7006-51A
E17 – 7006-51
E27/51´39
E26/24 –
E26/25 –
E26/50´39

NOTE The dash marking in the Gauge sheet No. column means that at the moment no such test system has

been developed.
2.3.1 E14 capped lamps
E14 capped lamps shall satisfy the following requirements:

a) candle lamps shall be fitted with caps E14/25´17 and tested with gauge 7006-55;

b) round bulb, pigmy, tubular and reflector lamps having lamp neck reference diameters of

21 mm and greater shall be fitted with caps E14/25´17 and tested with gauge 7006-55;

c) round bulb, pigmy, tubular and reflector lamps having lamp neck reference diameters

between 16 mm and 21 mm shall be fitted with caps E14/23´15 or E14/20;

d) round bulb, pigmy, tubular and reflector lamps having lamp neck reference diameters

between 14 mm and 16 mm shall be fitted with caps E14/20.

In cases c) and d) a gauge is not required, because the choice of caps guarantees the same

degree of safety as in cases a) and b).
---------------------- Page: 11 ----------------------
– 10 – 60432-1 © IEC:1999+A1:2005
+A2:2011
2.4 Lamp cap temperature rise (Dt )
2.4.1 Average cap temperature rise

The average cap temperature rise per class of lamp manufactured in a period of 12 months

shall not exceed the following:
a) the appropriate value as specified in table 2; or

b) 45 K lower than the relevant values in table 2 where advantage is taken of the lower

maximum cap temperature of 2.5.4 b).

However, lamps fitted with E12, E17 and E26 caps with higher Dt values intended for special

applications are permitted, provided suitable cautionary notices accompany each lamp.

NOTE In North America, lampholder and luminaire designs may be primarily aligned with the cap temperature rise

characteristics of common frosted, clear and white lamps. Therefore, lamps with other bulb finishes or other

characteristics yielding a higher cap temperature rise may require special cautionary notices.

2.4.2 Compliance

Compliance shall be checked by measurements of lamp cap temperature rise on lamps in the

same class in accordance with the test procedure specified in IEC 60360.

If the lamp is marked with a voltage range, the cap temperature rise shall be measured at the

mean voltage provided the limits of the voltage range do not differ by more than 2,5 % from the

mean voltage. For lamps with a wider voltage range, the measurement shall be at the highest

marked voltage.

NOTE Table 2 shows upper limits for average cap temperature rise which apply to all lamps listed by wattage,

bulb and cap. In practice, several design features such as light centre length, mount shape and bulb finish affect

cap temperature rise, but such factors are encompassed in each limit.
2.4.3 Batch testing

For the testing of batches when the 20 lamp sample size is needed, the average shall not

exceed the appropriate value in accordance with 2.4.1, with an allowance of +9 K.

2.5 Resistance to torque
2.5.1 Caps

Caps shall be so constructed and assembled to the bulbs that they remain attached during

normal operation.
2.5.2 Unused lamps

For unused lamps, the lamp cap shall not move relative to the bulb when subjected to the

relevant torque value from table 3 as tested in accordance with C.1. Where the means of

attachment is other than by capping cement or adhesive, relative movement between bulb and

cap is permitted, provided it does not exceed 10°.
2.5.3 Resistance to heat

The lamp cap and capping cement or other means of attachment shall endure exposure to heat

at a level equal to the maximum cap temperature for which that class of lamp is designed.

The lamp cap shall not move relative to the bulb when subjected to the relevant torque values

of table 4 after the heating test specified in C.2 at the appropriate temperature of 2.5.4. In the

case where the means of attachment is other than by capping cement or adhesive, relative

movement between bulb and cap is permitted, provided it does not exceed 10°.
---------------------- Page: 12 ----------------------
60432-1 © IEC:1999+A1:2005 – 11 –
+A2:2011
Table 2 – Maximum allowable cap temperature rise (Dt ) for various lamp wattages
and classes over a 12 month period average
Group Dt max.
Wattage
number
Bulb shape K
B15d B22d E12 E14 E17 E26/24 E26/25 E27
1 25 & 30 A, PS, M and - - - - - 95 65 -
other shapes
40 - - - - - 95 85 -
intended for
60 use in the - 125 - - - 120 95 120
same
100 - 135 - - - 120 110 130
luminaire
150 & 200 - 135 - - - 120 100 130
4,6 4,6
2 40 B, G 135 140 140 130 - 140 - 140
(diameter ≤
2 4,6 4,6 2
60 145 125 165 140 - 165 - 120
45 mm), P
and other
shapes
intended for
use in the
same
luminaire
3 15 C, F and - - - - 90 - 90 -
other shapes 9
25 - - 120 - 110 120 110 -
intended for
4,6 9 4,6
40 use in the - - 140 - 130 140 130 -
same
4,6 9 4,6
60 - - 165 - 130 165 130 -
luminaire
4 25 & 40 G (diameter - - - - 110 - 110 -
> 45 mm)
60 & 100 - - - - - - 110 -
5 25 P & G - - - - 110 - 110 -
(diameter ≤
40 135 135 - 135 - - 110 135
45 mm) with
60 bowl mirror 135 - - 135 - - 110 -
6 60 A & PS with - 130 - - - - 110 130
bowl mirror
100 - 135 - - - - 110 135
150 & 200 - 135 - - - - - 135
7 25 R and other - - - - 85 - - -
shapes
40 120 120 - 120 95 145 95 120
intended for
60 use in the - 130 - - 105 145 105 130
same 6,7,8
100, 150 - 135 - - - 145 110 135
luminaire
& 200
3 6,8
8 75 PAR shapes - - - - - 145 85 150
6,8
100 - - - - - 145 100 150
6,8
150 - - - - - 145 125 150
9 150 PAR
...

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