IEC 60432-3:2002/AMD2:2008

IEC 60432-3
Edition 1.0 2008-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Incandescent lamps – Safety specifications –
Part 3: Tungsten-halogen lamps (non-vehicle)

Lampes à incandescence – Prescriptions de sécurité –
Partie 3: Lampes tungstène-halogène (véhicules exceptés)

IEC 60432-3 A2:2008
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IEC 60432-3
Edition 1.0 2008-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Incandescent lamps – Safety specifications –
Part 3: Tungsten-halogen lamps (non-vehicle)

Lampes à incandescence – Prescriptions de sécurité –
Partie 3: Lampes tungstène-halogène (véhicules exceptés)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
G
CODE PRIX
ICS 29.140.20 ISBN 2-8318-9713-0

– 2 – 60432-3 Amend. 2 © IEC:2008
FOREWORD
This amendment has been prepared by subcommittee 34A: Lamps, of IEC technical
committee 34: Lamps and related equipment.
The text of this amendment is based on the following documents:
FDIS Report on voting
34A/1267/FDIS 34A/1285/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base 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• withdrawn,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.
_____________
Page 7
1.2 Normative references
Add the following new reference to the list and delete from the Bibliography:
IEC 60432-1:1999, Incandescent lamps – Safety specifications – Part 1: Tungsten filament
lamps for domestic and similar general lighting purposes
1.3 Definitions
Add, on page 13, the following new definition:
1.3.26
breakdown
plasma discharge between two points inside the bulb of the lamp with maximum difference of
electrical potential
For the purposes of this standard it is assumed that breakdown has occurred if the current
exceeds the rated current by a factor of 5 (under consideration).

Page 13
2.1 General
Add, after the last sentence, the following new sentence:
For the purposes of this standard, the voltage designations shown in IEC 60357 apply.

60432-3 Amend. 2 © IEC:2008 – 3 –
Page 15
2.2.2 Additional information and marking
Replace Note 2 of item b) with the following new note :
NOTE 2 In North America, a written notice may be used in place of this symbol.

2.3.1 General
Add the following new sentence after the second paragraph :
The G9, GU10 or GZ10 base shall be used for self-shielded lamps only.

Page 17
2.6 Safety at end of life of self-shielded lamps with rated voltages 50 V – 250 V
Amend the title of Subclause 2.6 as follows:
2.6 Safety at end of life of self-shielded lamps with rated voltages from range B or C
Insert, in the last paragraph between the first and second sentence, the following wording:
The test rack circuit characteristics shall be in line with Table E.1 of IEC 60432-1.
Modify the existing Note as Note 1 and add the following new Note 2:
NOTE 2 Some lamp designs are not suitable for testing with the induced failure test because a breakdown cannot
reliably be achieved. Such lamps, provided they are of voltage range B or C, will be submitted to an operation-to-
failure test as described above.

– 4 – 60432-3 Amend. 2 © IEC:2008
Page 21
Table 1 – Grouping of test records –
Sampling and acceptable quality levels (AQL)
Modify row 2.6 of the table rows as follows:

1 2 3 4 5 6
a
Sub- Test Type of Permitted accumulation Minimum annual sample per AQL
clause test of test records accumulation
For lamps For lamps %
made most of made
the year infrequently
2.6 Safety at end of life
- Induced failure  Use Clause D.3 -
or Design
- Operation to
b
-
failure Use Clause D.4
All lamps of all families
- Induced failure
or Periodic 315 0,25
- Operation to
b
failure
a
For the use of this term, see IEC 60410.
b
The operation to failure test is allowed in those cases where no reliable breakdown can be achieved. See also
Note 2 to subclause 2.6.
Page 43
Table C.4 – Maximum base-pin temperatures
Replace the existing table with the following new table :

Rated wattage Temperature
ºC
≤ 20 W 220
> 20 W and < 50 W 250
≥ 50 W 300
60432-3 Amend. 2 © IEC:2008 – 5 –
Page 47
D.3 Safety at end of life – Induced failure test
Replace the existing Clause D.3 with the following new Clause D.3:
D.3 Safety at end of life – induced failure test
D.3.1 Assessment for Subclause F.3.1
First sample : 125 Rejection number : 2
– Accept when no failures have been found
– If 1 failure found, take a
second sample : 125 Rejection number : 2 (in the combined sample)

D.3.2 Assessment for Subclause F.3.2
First sample: 125 Rejection number : 7
– Accept when a maximum of 3 failures have been found
– If 4, 5 or 6 failures found, take a
second sample: 125 Rejection number : 9 (in the combined sample)

Add the following new Clause D.4:
D.4 Safety at end of life – operation-to-failure-test
First sample : 125 Rejection number : 2
– Accept when no failures have been found
– If 1 failure found, take a
second sample : 125 Rejection number : 2 (in the combined sample)

Page 51
Annexe F (normative) Induced failure test
Replace the existing Annex F with the following new Annex F:
Annex F
(normative)
Induced failure test
F.1 Test circuit and equipment
The test circuit shall consist of the following:
– a 50 Hz or 60 Hz supply line whose voltage shall be the test voltage of the lamps within a
± 2 % tolerance;
– a fuse with a rating not less than 25 A, for 220 V – 250 V lamps, and a rating of 15 A
(under consideration) for lamps below 220 V.

– 6 – 60432-3 Amend. 2 © IEC:2008
A safety cover shall be provided to cover the lamp in the test position (during the warm-up of
the lamp and during breakdown).
A laser of adequate power shall be used to induce breakdown of the filament.
NOTE An example of a suitable laser is a neodymium-glass laser.
The inductance and resistance of the whole circuit, including the items of the above-
mentioned components and including any fuse and all wiring, shall meet the following
requirements:
a) for lamp voltage ratings between 200 V and 250 V
– resistance (Ω): 0,4 to 0,45;
– inductance (mH): 0,6 to 0,65;
b) for lamp voltage ratings between 100 V and 150 V
– resistance (Ω): 0,3 to 0,35;
– inductance (mH): 0,6 to 0,65.
For current measurements an appropriate device shall be installed with a minimum time
resolution of 0,1 ms, minimum recording time of 1 s, minimum current resolution of 0,1 A ( a
maximum current range up to 500 A is recommended).
F.2 Test procedure
The lamp to be tested shall be inserted in the lampholder and the safety cover put in place.
Through a small hole in the cover, the laser beam shall be aligned and focused on the lamp
filament. The lamp shall be switched on. After a complete warm-up of the lamp, a laser pulse
shall be applied.
If the lamp remains alight, the output power of the laser shall be increased and the laser pulse
shall be applied again. This procedure shall be repeated until breakdown or disruption of the
filament is achieved.
NOTE 1 If the focusing of the laser beam is disturbed by the finish of the lamp or the structure of the outer
envelope, specially prepared samples (e.g. laser polishing of the frosted bulb wall) should be used.
A lamp where no breakdown can be achieved shall be disregarded and a new lamp tested.
NOTE 2 In the case of filament disruption without breakdown, it might help to create a breakdown more easily by
adjusting the lamp in such a way that a point with optimum potential difference is situated right above the laser
aiming point. In this position, the evaporating tungsten might help to create a breakdown.
F.3 Inspection and assessment
F.3.1 After the test, each test lamp is examined. If:
a) the bulb is no longer intact;
b) or the bulb is detached from the cap;
c) or, for bayonet caps only, there is a short circuit between either contact and the shell,
then the lamp is deemed to have failed the test and is counted as a non-conformity.
F.3.2 Additionally, for G9-based lamps of voltage range C, the current curve of the
breakdown is analysed. For this purpose, all current values shall be converted to positive
values.
60432-3 Amend. 2 © IEC:2008 – 7 –
The resulting curve shall not exceed an envelope which is defined by a first box with a height
of 200 A and a duration of 2 ms and a subsequent box with a height of 10 A and a duration of
5 ms.
If the current curve cannot be covered by the envelope described above, the lamp is also
deemed to have failed the test and is counted as a non-conformity.
The above curve is based on experience where the light-producing component has a single
pinch. For those with double pinch, the time values are under consideration.
NOTE Testing of lamps with other base types and of voltage range B is under consideration.

___________
– 8 – 60432-3 Amend. 2 © CEI:2008
AVANT-PROPOS
Le présent amendement a été établi par le sous-comité 34A: Lampes, du comité d'études 34
de la CEI: Lampes et équipements associés.
Le texte de cet amendement est issu des documents suivants:
FDIS Rapport de vote
34A/1267/FDIS 34A/1285/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cet amendement.
Le comité a décidé que le contenu de cet amendement et de la publication de base ne sera
pas modifié avant la date de maintenance indiquée sur le site web de la CEI sous
"http://webstore.iec.ch" dans les données relatives à la publication recherchée. A cette date,
la publication sera
• reconduite,
• supprimée,
• remplacée par un
...