BS/EN 60838-1-2017 pdf download.Miscellaneous lampholders Part 1 : General requirements and tests ( IEC 60838-1 : 2016).
5.4 Lampholciers are deemed to comply with this standard if no specimen fails in the complete series of tests specified in 5.3.
If one specimen fails in one test, that test and the preceding ones which may have influenced
the result of that test are repeated on another set of specimens for the number required by
5.3, all of which shall then comply with the repeated tests and with the subsequent tests.
Lampholders are deemed not to comply with this standard If there are more failures than one.
The applicant may submit, together with the first set of specimens, the additional set which may be needed in case of failure of one specimen. The testing station shall then, without further request, test the additional specimens and will reject only if a further failure occurs.
If the additional set of specimens is not submitted at the same time, a failure of one specimen will entail the rejection.
6 Classification
Lampholders are classified as follows.
6.1 According to their installation conditions
— unenclosed Iampholders; enclosed lampholders;
– partly reinforced insulated lampholders;
– enclosed reinforced insulated lampholders.
NOTE 1 Where a lampholder is u5ed with a working voltage of 50 % or less of its maximum rating, it can be regarded as equivalent to a reinforced insulated lampholder
6.2 According to their resistance to heat:
— for rated operating temperatures up to and including 80 °C;
— for rated operating temperatures over 80 °C (T-marked lampholders).
The measuring point for the operating temperature is that area of the lampholder which makes electrical contact with the lamp cap/base. If the heat resistance of insulating parts, terminals and leads of the lampholder deviates from this operating temperature, these different values shall be stated in the manufacturer’s catalogue and are checked after appropriate installation in a luminaire or other additional enclosure, when that equipment is tested according to its own standard.
7 Marking
7.1 Lampholders shall be marked with the following mandatory markings:
a) mark of origin (this may take the form of a trade mark, manufacturers identification mark or the name of the responsible vendor);
b) either a unique catalogue number or an identifying reference.
Available technical documentation of the manufacturer such as printed catalogues or online catalogues shall allow a clear identification of a lampholder either by a unique catalogue number or by an identifying reference on the holder, specifying the essential characteristic features and the basic design of the product supplemented by a clear description. Variations of the basic design, for example different cable length, fixing means, colours, which do not affect safety or performance of the lampholder, may be disregarded In the type reference marked on the product. Variations included in the type testing procedure are listed in the corresponding test reports.
If a combination of lampholder components determines the lampholder designation, for example an assembly of a lamp connector and a retaining spring, the combination should be clearly identifiable.
Compliance is checked by inspection.
7.2 In addition to the above mandatory markings, the following information shall be given either on the lampholder or be made available in the manufacturer’s catalogue or the like:
a) the rated voltage in volts and rated pulse voltage in kilovolts (kV), if applicable; for polarized lampholders, the rated voltage in volts and the pair of rated pulse voltages:
NOTE 1 Some lampholders still show rated voltages higher than 500 V. This s an earlier way of expressing the permissible pulse voltage via a rated voltage. For such lampholders, the creepage distances and clearances can be found in IEC 60598-1.
b) the rated current in amperes;
C) the rated operating temperature T, if greater than 80 DC, in steps of 10 °C;
d) the conductor sizes for which the terminal is designed:
e) the high voltage arrow (see IEC 60417-5036:2002-10) for polarized lampholders to identify the connection for the higher pulse voltage, if applicable; It shall be visible close to the relevant terminal or wire entry during lampholder installation:
1) information on the application of ignition voltages.
If symbols are used, these shall be as follows.
For electrical rating:BS/EN 60838-1-2017 pdf download.