EN 60968:1990

SLOVENSKI STANDARD
01-julij-1999
Sijalke za splošno razsvetljavo z vgrajeno predstikalno napravo - Varnostne
zahteve (IEC 60968:1988, spremenjen)
Self-ballasted lamps for general lighting services - Safety requirements
Lampen mit eingebautem Vorschaltgerät für Allgemeinbeleuchtung -
Sicherheitsanforderungen
Lampes à ballast intégré pour l'éclairage général - Prescriptions de sécurité
Ta slovenski standard je istoveten z: EN 60968:1990
ICS:
29.140.30 )OXRUHVFHQþQHVLMDONH6LMDONH Fluorescent lamps.
Discharge lamps
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
INTERNATIONALE IEC
INTERNATIONAL
Première édition
STANDARD
First edition
1988-11
Lampes à ballast intégré pour l'éclairage
général
Prescriptions de sécurité
Self-ballasted lamps for general lighting
services
Safety requirements
© IEC 1988 Droits de reproduction réservés — Copyright - all rights reserved
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968 ©I EC - 3
CONTENTS
Page
FOREWORD
PREFACE 5
Clause
1. Scope
2. Definitions
General requirement and 9e, aral test requirements 9
3.
4. Marking
5. Interchangeability
6. Protection against electric shock 13
7. Insulation resistance and electric strength after
humidity treatment 15
8. Mechanical strength 17
9. Cap temperature rise 17
10. Resistance to heat 17
11. Resistance to flame and ignition
12. Fault conditions
FIGURES 24
968 ©IEC - 5
INTERNATIONAL ELECTROTECHNICAL COMMISSION
SELF-BALLASTED LAMPS FOR GENERAL LIGHTING SERVICES
Safety requirements
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters,
prepared by Technical Committees on which all the National Committees
having a special interest therein are represented, express, as nearly
as possible, an international consensus of opinion on the subjects
dealt with.
2) They have the form of recommendations for international use and they
are accepted by the National Committees in that sense.
3)
In order to promote international unification, the IEC expresses the
wish
that all National Committees should adopt the text of the IEC
recommendation for their national rules in so far as national
conditions will permit. Any divergence between the IEC
recommendation
and the corresponding national rules should, as far as possible, be
clearly indicated in the latter.
PREFACE
This standard has been prepared by Sub-Committee 34A: Lamps, of IEC
Technical Committee No. 34: Lamps and related equipment.
The text of this standard is based upon the following documents:
Six Months' Rule Report on Voting
34A(CO)366 34A(CO)418
Full information on the voting
for the approval of this standard can be
found in the Voting Report indicated in the above table.
In this standard, the following print types are used:
- Requirements proper: in roman type.
Test specifications: in italic type.
- Explanatory matter: in smaller roman type.
The following IEC publications are quoted in this standard:
Publications Nos. 61: Lamp caps and holders together with gauges for
the control of interchangeability and safety.
61-1: Part 1: Lamp caps.
61-3: Part 3: Gauges.
238 (1982): Edison screw lampholders.
360 (1987): Standard method of measurement of lamp cap
temperature rise.
695-2-1 (1980): Fire hazard testing, Part 2: Test methods,
Glow-wire test and guidance.
-7
968©IEC
SELF-BALLASTED LAMPS FOR GENERAL LIGHTING SERVICES
Safety requirements
1. Scope
This standard specifies the safety and interchangeability require-
ments, together with the test methods and conditions, required to
show compliance of tubular fluorescent and other gas-discharge lamps
with integrated means for controlling starting and stable operation
(self-ballasted lamps), intended for domestic and similar general
lighting purposes, having:
- a rated wattage up to 60 W;
- a rated voltage of 100 V to 250 V;
- Edison screw or bayonet caps.
The requirements of this standard relate only to type testing.
Recommendations for whole product testing or batch testing are under
consideration.
Definitions
For the purposes of this standard the following definitions apply:
2.1 Self-ballasted lamp
A tubular fluorescent or other discharge lamp unit that incorporates,
permanently enclosed, all elements that are necessary for starting and
for stable operation, and which does not include any replaceable or
interchangeable parts.
2.2 Type
Lamps that, independent of the type of cap, are identical in photo-
metric and electrical rating.
2.3 Rated voltage
The voltage or voltage range marked on the lamp.
2.4 Rated wattage
The wattage marked on the lamp.
2.5 Rated frequency
The frequency marked on the lamp.

968 © IEC
(Ats)
2.6 Cap temperature rise
The surface temperature rise (above ambient) of a standard test
lampholder fitted to the lamp, when measured in accordance with the
standard method described in IEC Publication 360.
2.7 Live part
A conductive part which may cause an electric shock in normal use.
2.8 Type test
A test or series of tests made on a type test sample for the purpose
of checking compliance of the design of a given product with the
requirements of the relevant standard.
2.9 Type test sample
A sample consisting of one or more similar units submitted by the
manufacturer or responsible vendor for the purpose of the type test.
3. General requirement and general test requirements
3.1 Self-ballasted lamps shall be so designed and constructed that in
normal use they function reliably and cause no danger to the user or
surroundings.
In general, compliance is checked by carrying out all the tests
specified.
3.2 All measurements unless otherwise specified, are carried out at rated
voltage and frequency and in a draught-proof room at.(25 ± 1) °C.
If lamps are marked with a voltage range, rated voltage is taken as
the mean of the voltage range marked.
3.3 Self-ballasted lamps are non repairable, factory sealed units. They
shall not be opened for any tests. In the case of doubt based on the
inspection of the lamp and the examination of the circuit diagram, and
in agreement with the manufacturer or responsible vendor, lamps
specially prepared so that a fault condition can be simulated shall be
submitted for testing (see Clause 12) .
4. Marking
4.1 Lamps shall be clearly and durably marked with the following manda-
tory markings:
1) Mark of origin (this may take the form of a trade mark, the manu-
facturer's name or the name of the responsible vendor).

968 © IEC - 11 -
2) Rated voltage or voltage range (marked "V" or volts").
3) Rated wattage (marked "W" or "watts") .
4) Rated frequency (marked in "Hz") .
4.2 In addition the following information shall be given by the lamp
manufacturer either on the lamp or packing or in installation in-
structions:
1) Lamp current.
Burning position if restricted.
2)
3) For lamps with a weight significantly higher than that of the lamps
for which they are a replacement, attention should be drawn to the
fact that the increased weight may reduce the mechanical stability
of certain luminaires.
Special conditions or restrictions which shall be observed for lamp
4)
operation, e.g. operation in dimming circuits.
4.3 Compliance is checked by the following:
1) Presence and legibility of the marking required in Sub-clause 4.1 -
by visual inspection.
2) The durability of the marking is checked by trying to remove it
by rubbing lightly for 15 s with a piece of cloth soaked with water
and, after drying, for a further 15 s with a piece of cloth soaked
with hexane. The marking shall be legible after the test.
information required in Sub-clause 4.2 - by visual
3) Availability of
inspection.
5.
Interchangeability
Interchangeability shall be ensured by the use of caps in accordance
5.1
with IEC Publication 61-1.
5.2 Compliance of the combination of cap and bulb is checked by the use
of gauges for checking the dimensions controlling interchangeability in
accordance with Table I.
The gauges are those shown in the standard sheet included in IEC
Publication 61-3.
968 © IEC - 13 -
Table 1
Interchangeability gauges and
lamp cap dimensions
Gauge sheet
Lamp Cap dimensions to be checked
No.
cap by the gauge
7006-10
B22d A max. and A min.
l
and
D1 max. }
7006-11
N min J
Diametrical position of the pins
Insertion in lampholder 7006-4A
Retention in lampholder 7006-4B
7006-27B
E27 Max. dimensions of the screw thread
Min. major diameter of the cap
7006-28A
screw thread
7006-50
Contact making
the screw thread 7006-27D
E26 Max. dimensions of
7006-27E
Max. major diameter of the cap
screw thread
6. Protection against electric shock
Self-ballasted lamps shall be so constructed that, without any addi-
tional enclosure in the form of a luminaire, no internal metal parts or
live metal parts of the lamp cap are accessible when the lamp is
installed in a lampholder according to Publication 238.
Compliance is checked by means of the test finger specified in
N.
Figure 1, if necessary, with a force of 10
Lamps with Edison screw caps shall be so designed that they comply
with the requirements for inaccessibility for general lighting service
(GLS) lamps.
Compliance is checked with the aid of a gauge in accordance with the
caps.
current edition of IEC Publication 61-3, Sheet 7006-51A for E27
Requirements for E26 caps are under consideration.
Lamps with B22 caps are subject to the same requirements as normal
incandescent lamps with this cap.
External metal parts other than current-carrying metal parts of the
cap shall not be or become live. For testing, any movable conductive
material shall be placed in the most onerous position without using a
tool
Compliance is checked by means of the insulation resistance and
electric strength test (see Clause 7).

- 15 -
968 ©IEC
7. Insulation resistance and electric strength after humidity treatment
Insulation resistance and electric strength shall be adequate between
current-carrying metal parts of the lamp and accessible parts of the
lamp.
7.1 Insulation resistance
The lamp shall be conditioned for 48 h in a cabinet containing air
with a relative humidity between 91% and 95%. The temperature of the
air is maintained within 1 °C of any convenient value between 20 °C
and 30 °C.
Insulation resistance shall be measured in the humidity cabinet with
a d.c. voltage of approximately 500 V. 1 min after application of the
voltage. The insulation resistance between current-carrying metal parts
of the cap and accessible parts of the lamp (accessible parts of
insulating material are covered with metal foil) shall be not less
than 4 MS2.
The insulation resistance of B22 caps between shell and contacts is
under consideration.
7.2 Electric strength
Immediately after the insulation resistance test, the same parts as
specified above shall withstand a voltage test for 1 min with an a.c.
voltage as follows:
ES caps: between accessible parts and parts of screw caps
(accessible parts of insulating material are covered with metal
foil):
type HV (220 V to 250 V) : 4 000 V r. m. s.
type BV (100 V to 120 V) : 2U + 1000 V
Value U = rated voltage.
During the test the eyelet and the shell of the cap are short-
circuited.
Initially no more than half the prescribed voltage is applied. It is
then gradually raised to the full value.
flash-over or breakdown shall occur during the test. Measure-
No
ments shall be carried out in the humidity cabinet.
The distance between the foil and the current-carrying parts is
under consideration.
B22 caps: between shell and contacts (under consideration).

968©lEC -17-
8. Mechanical strength
Torsion resistance
The cap shall remain firmly attached to the bulb or that part of the
lamp which is used for screwing the lamp in or out when subjected to
the torque levels listed below.
B22d 3
Nm
E26 and E27 3 Nm
The test is made by means of the test holders shown in Figures 2
and 3.
The torque shall not be applied suddenly, but shall be increased
continuously from zero to the specified value.
In the case of uncemented caps, relative movement between cap and
bulb is permitted provided it does not exceed 10°.
After the mechanical strength test the sample shall comply with the
requirements of accessibility (see Clause 6) .
9. Cap temperature rise ,
The cap temperature rise At of the complete lamp during run up,
stabilization period and after stabilization shall not exceed the values
mentioned below when measured under the conditions specified in IEC
Publication 360:
E27 120 K
B22d 125 K
E26 under consideration
The values above correspond to a 60 W max. incandescent lamp and
serve to prevent heating problems in incandescent lamp luminaires which
have been
tested with a heat-test source (HTS) lamp to check their
thermal characteristics.
Measurement shall be carried out at rated voltage. If the lamp is
marked with a voltage range it shall be measured at the mean voltage
of that range, provided the limits of the voltage range do not differ
by more than 2.5% from the mean voltage. For lamps with a wider
range, the measurement shall be made at the highest value of the
range.
...