IEC 60838-1:2016/AMD1:2017

IEC 60838-1 ®
Edition 5.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Miscellaneous lampholders –
Part 1: General requirements and tests

Douilles diverses pour lampes –
Partie 1: Exigences générales et essais

IEC 60838-1:2016-05/AMD1:2017-02(en-fr)

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IEC 60838-1 ®
Edition 5.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Miscellaneous lampholders –
Part 1: General requirements and tests

Douilles diverses pour lampes –

Partie 1: Exigences générales et essais

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.10 ISBN 978-2-8322-3885-1

– 2 – IEC 60838-1:2016/AMD1:2017
© IEC 2017
FOREWORD
This amendment has been prepared by subcommittee 34B Lamp caps and holders, of IEC
technical committee 34 Lamps and related equipment.
The text of this amendment is based on the following documents:
FDIS Report on voting
34B/1888/FDIS 34B/1891/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 stability date indicated on the IEC website 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• withdrawn,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.
_____________
3 Terms and definitions
Replace definition 3.6 with the following new definition:
3.6
rated ignition voltage
highest peak value of an ignition pulse voltage the holder is able to withstand
Replace definition 3.20 with the following new definition:
3.20
polarized lampholder
lampholder for building-in specially designed for asymmetric ignition voltages, where the rated
ignition voltage (higher rated ignition voltage) is designated to a fixed contact
Add, at the end of Clause 3, the following new terms and definitions:
3.23
critical frequency
ƒ
crit
frequency at which the reduction of the breakdown voltage of a clearance begins (occurs)
Note 1 to entry: ƒ ≈ 0,2/d [MHz] where d (in mm) is the clearance according to Table 3 (basic or supplementary
crit
insulation and reinforced insulation respectively) disregarding the frequency.
[SOURCE: IEC 61347-1:2015, 3.40, modified — the note has been added]
3.24
ignition voltage
peak voltage applied to ignite a discharge lamp

© IEC 2017
[SOURCE: IEC 61347-1:2015, 3.46]
3.24.1
ignition pulse voltage
peak ignition voltage with a total duration of ≤ 750 µs (summation of all pulse durations) within
10 ms, with the duration time (width) of each pulse being measured at the level of 50% of the
maximum absolute peak value
Note 1 to entry: Ignition pulse waveforms, which are considered as ignition pulse voltage, should not contain any
dominant frequency above 30 kHz or should be usually highly damped (after 20 µs the peak voltage level should be
less than one half of the maximum peak voltage). For the assessment of the dominant frequency
IEC 60664-4:2005, Annex E should be consulted.
[SOURCE: IEC 61347-1:2015, 3.46.1]
3.25
maximum working voltage
U
out
maximum occurring working voltage (r.m.s.) between the output terminals of a controlgear or
between the output terminals and earth, during normal or abnormal operating condition
Note 1 to entry: Transients and ignition voltages have to be neglected.
[SOURCE: IEC 61347-1:2015, 3.33, modified — "of a controlgear" has been added]
3.26
maximum working peak output voltage
Û
out
maximum repetitive occurring peak working voltage between the output terminals of a
controlgear or between its output terminals and earth, during normal or abnormal operating
condition and with transients neglected
[SOURCE: IEC 61347-1:2015, 3.45, modified — "of a controlgear" has been added]
3.27
equivalent transformed peak voltage
U
p
transformed output peak voltage, which is converted for the worst case peak voltage with its
related frequency into an ignition pulse voltage
Note 1 to entry: The value of the declared equivalent transformed output peak voltage is the essential parameter
for selecting the associated components
Note 2 to entry: See 3.24.1
Note 3 to entry: To determine the declared equivalent transformed output peak voltage for basic insulation U
p
[basic] the worst case combination of the maximum occurring peak voltage and frequency has to be taken into
account, which means the maximum clearance according to IEC 61347-1:2015, Table 10 for basic insulation.
Note 4 to entry: To determine the declared equivalent transformed output peak voltage for the reinforced
insulation U [reinforced] the worst case combination of the maximum occurring peak voltage and frequency has to
p
be taken into account, which means the maximum clearance according to IEC 61347-1:2015, Table 11 for
reinforced insulation.
[SOURCE: IEC 61347-1:2015, 3.47]
7 Marking
7.2
Replace item a) including the note with the following new item a) and note:

– 4 – IEC 60838-1:2016/AMD1:2017
© IEC 2017
a) the rated voltage in volts and rated ignition voltage in kilovolts (kV), if applicable. For
polarized lampholders the rated voltage in volts and the pair of rated ignition voltages;
NOTE 1 Some lampholders still show rated voltages higher than 500 V. This is an earlier way of expressing
the permissible ignition voltage via a rated voltage. For such lampholders, the creepage distances and
clearances can be found in IEC 60598-1.
Replace item e) with the following new item e):
e) the high voltage arrow (see IEC 60417-5036:2002-10) for polarized lampholders to identify
the connection for the higher ignition voltage, if applicable. It shall be visible close to the
relevant terminal or wire entry during lampholder installation.
Replace, in the third paragraph, the last dashed list item with the following new text:
– high ignition voltage terminal/wire on polarized lampholders: (see IEC 60417-
5036:2002-10)
Replace the fourth paragraph with the following new text:
For the rated ignition voltage, the symbol shall be preceded by its value (e.g. 5 kV). For
polarized lampholders the two rated ignition voltages shall be separated by an oblique stroke
(e.g. 15/2,5 kV).
NOTE 3 The figure marked before the oblique stroke represents the higher ignition voltage, the figure behind
represents the rated ignition voltage at least based on the impulse withstand category of the lampholder.
7.3
Replace the first paragraph with the following new text:
The instructions supplied by the holder manufacturer or responsible vendor shall contain all
the information required to ensure correct mounting and operation of the connectors or
holders. (For example information regarding UV radiation, frequency limitations, increased
creepage distances, PTI or the like)
15 Creepage distances and clearances
Replace Table 2a with the following new Table 2a:

© IEC 2017
Table 2a – Minimum distances for AC sinusoidal voltages up to 30 kHz −
Impulse withstand category II
Rated voltage
Distances
V
mm 50 150 250 500
Basic insulation
1 Distances between live parts of different
polarity, and
2 Distances between live parts and external
metal parts, mounting surfaces, loose metal
cover, if any, the outer surface of parts of
insulating material which are permanently
a
fixed to the holder , including screws or
devices for fixing covers or fixing the holder
to its support:
– Creepage distances
b
insulation PTI ≥ 600 0,6 0,8 1,5 3
b
PTI < 600 1,2 1,6 2,5 5
c
– Clearances 0,2 0,5 1,5 3
Reinforced insulation
Distances between live parts and external
metal parts, mounting surfaces, loose metal
cover, if any, the outer surface of parts of
insulating material which are permanently fixed
a
to the holder , including screws or devices for
fixing covers or fixing the holder to its support:
– Creepage distances
b
insulation PTI ≥ 600 - 1,6 3 5,5
b
- 3,2 5 10
PTI < 600
c
– Clearances 0,4 1,6 3 5,5
Values for creepage distances may be found for intermediate values of rated voltages by linear interpolation
between tabulated values. No values are specified for rated voltages below 25 V AC and 60 V DC ripple free as the
voltage test of 12.2.2 is considered sufficient. Creepage distances shall not be less than the required minimum
clearance.
In Japan, the values given in the table are not applicable. Japan requires larger values than the values given in the
table.
a
The distances between live contacts and the lampholder face (reference plane) shall, however, be in
accordance with the relevant standard sheets of IEC 60061-2.
b
PTI (proof tracking index) in accordance with IEC 60112:2003 and IEC 60112:2003/AMD1:2009.
– In the case of creepage distances to parts not energized or not intended to be earthed, where no tracking
can occur, the values specified for material with PTI ≥ 600 apply for all materials (in spite of the real PTI).
– For creepage distances subjected to working voltages of less than 60 s duration, the values specified for
material with PTI ≥ 600 apply for all materials.
– For creepage distances not liable to contamination by dust or moisture, the values specified for material
with PTI ≥ 600 apply for all materials (independent of the real PTI).
– For creepage distances, the equivalent DC voltage is equal to the r.m.s. value of the sinusoidal AC voltage.
c
For clearances, the equivalent DC voltage is equal to the peak of the AC voltage.

Replace Table 2b with the following new Table 2b:

– 6 – IEC 60838-1:2016/AMD1:2017
© IEC 2017
Table 2b – Minimum distances for AC sinusoidal voltages up to 30 kHz −
Impulse withstand category III
Rated voltage
Distances
V
mm
50 150 250 500
Basic insulation
1 Distances between live parts of different
polarity
– Creepage distances
b
insulation PTI ≥ 600 0,6 0,8 1,5 3
b
PTI < 600 1,2 1,6 2,5 5
c
– Clearances 0,2 0,5 1,5 3
2 Distances between live parts and external
metal parts, mounting surfaces, loose metal
cover, if any, the outer surface of parts of
insulating material which are permanently
a
fixed to the holder , including screws or
devices for fixing covers or fixing the holder
to its support:
– Creepage distances
b
insulation PTI ≥ 600 0,6 1,5 3 5,5
b
1,2 1,6 3 5,5
PTI < 600
c
– Clearances 0,2 1,5 3 5,5
Reinforced insulation
Distances between live parts and external
metal parts, mounting surfaces, loose metal
cover, if any, the outer surface of parts of
insulating material which are permanently fixed
a
to the holder , including screws or devices for
fixing covers or fixing the holder to its support:
– Creepage distances
b
insulation PTI ≥ 600 – 3 5,5 8
b
3,2 5,5 10
PTI < 600 –
c
– Clearances 3 5,5 8
–
Values for creepage distances may be found for intermediate values of rated voltages by linear interpolation
between tabulated values. No values are specified for rated voltages below 25 V AC and 60 V DC ripple free as the
voltage test of 12.2.2 is considered sufficient. Creepage distances shall not be less than the required minimum
clearance.
In Japan, the values given in the table are not applicable. Japan requires larger values than the values given in the

table.
a
The distances between live contacts and the lampholder face (reference plane) shall, however, be in
accordance with the relevant standard sheets of IEC 60061-2.
b
PTI (proof tracking index) in accordance with IEC 60112:2003 and IEC 60112:2003/AMD1:2009.
– In the case of creepage distances to parts not energized or not intended to be earthed, where no tracking
can occur, the values specified for material with PTI ≥ 600 apply for all materials (in spite of the real PTI).
– For creepage distances subjected to working voltages of less than 60 s duration, the values specified for
material with PTI ≥ 600 apply for all materials.
– For creepage distances not liable to contamination by dust or moisture, the values specified for material
with PTI ≥ 600 apply for all materials (independent of the real PTI).
– For creepage distances, the equivalent DC voltage is equal to the r.m.s. value of the sinusoidal AC voltage.
c
For clearances, the equivalent DC voltage is equal to the peak of the AC voltage.

© IEC 2017
Replace, after Table 2b and the fifth paragraph, the existing text with the following new text:
NOTE 1 In case of combination of voltage and frequency (> 30 kHz) requiring higher creepage distances than the
values required in Tables 2a and 2b, the controlgear is marked with the details of this combination (Û and its
out
corresponding frequency f ) − see IEC 61347-1:2015, 7.1, item w). For details and the required values for
Uout
creepage distances see IEC 61347-1:2015, 16.2.
The clearances for the rated ignition voltage of the holder shall not be less than the values
given in Table 3.
NOTE 2 Lampholders can be subjected to a working voltage higher than the rated voltage under the following
conditions:
– The nominal voltage and the overvoltage category of the supply voltage does not exceed the rated values of
the lampholder.
– The working voltage (r.m.s.) and the maximum repetitive peak working voltage (Û ) marked on the
out
controlgear respectively do not specify a higher creepage distance than the rated voltage of the lampholder.
– The working voltage does not specify a higher clearance than the rated voltage and the rated ignition voltage
of the lampholder.
Table 3 – Minimum distances for ignition pulse voltages
or equivalent peak voltages U
p
Minimum clearance
Rated ignition
mm
pulse voltage
Basic Reinforced
kV
insulation insulation
2 1 2,2
2,5 1,5 3
3 2 3,8
4 3 6
5 4 8
6 5,5 10,4
8 8 15
10 11 19,4
12 14 24
15 18 31,4
20 25 44
25 33 60
40 72
40 60 98
50 75 130
60 90 162
a
80 130
a
100 170
a
no values available
The distances specified in Table 3 are derived from IEC 60664-1 (inhomogeneous field
conditions). For distances subjected to both sinusoidal voltage as well as ignition voltage, the
minimum required distance shall be not less than the highest value indicated in either
Table 2a, Table 2b or Table 3 relevant for the impulse voltage category.
NOTE 3 Ignition pulse voltages having total pulse duration of > 750 μs or having a higher frequency than ƒ can
crit
require higher clearances although its peak value is lower than the rated ignition voltage of the lampholder.

--------
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