IEC 60838-1-2020 Miscellaneous lampholders – Part 1: General requirements and tests.
4 General requirement
Lampholders shall be so designed and constructed that in normal use they function reliably and cause no danger to persons or surroundings.
In general, compliance is checked by carrying out all the tests specified.
5 General conditions for tests
5.1 Tests according to this standard are type tests.
NOTE 1 The requirements and tolerances permitted by the standard are related to testing of type test sample submitted for that purpose. Compliance of type test sample does not ensure compliance of the whole production of a manufacturer with this safety standard. Conformity of production is the responsibility of the manufacturer and can include routine tests and quality assurance in addition to type testing.
NOTE 2 For further information on conformity testing during manufacture see IEC 60061 -4.
5.2 Unless otherwise specified, the tests are made at an ambient temperature of 20 °C ± 5 °C and with the holder in the most unfavourable position for normal use.
If a lampholder is declared to accept different lamp fits, it shall comply with the requirements of each of the fits mentioned.
Compliance is checked with separate sets of specimens according to 5.3.
If the use of different lamp fits in turn is permitted by the manufacturer, only one set of specimens is used to check compliance with all requirements.
For all tests the most critical of the relevant fits and gauges shall be used and in the most onerous sequence.
5.3 The tests and inspections are carried out in the order of the clauses, on a total of
– 1 0 pairs of matching holders intended for linear double-capped lamps;
If a pair of holders consists of identical holders, it is sufficient that one holder instead of one pair is subjected to all the tests, except for the tests of Clause 8, of 1 1 .2, 1 1 .3, of
Clause 1 3, Clause 1 6 and of 1 7.6 where pairs are needed.
– 1 0 specimens intended for single-capped lamps; in the order of the clauses, as follows:
– three pairs or three specimens: Clause 4 up to and including Clause 1 5 (except for 9.2);
NOTE The tests of 9.2 are carried out on the number of separate specimens as required by the relevant standards.
– three pairs or three specimens: Clause 1 6 and 1 7.6;
– one pair or one specimen: 1 7.1 ;
– one pair or one specimen: 1 7.3;
– one pair or one specimen: 1 7.4;
– one pair or one specimen: 1 7.5 and Clause 1 8.
Together with these units, the manufacturer’s mounting instructions (see 7.3) shall be supplied.
In such cases, where according to the mounting instructions the rated pulse ignition voltage of the holder can only be achieved with a cap inserted, suitable caps shall be supplied together with the type test sample. The relevant tests are then carried out with a cap inserted.
5.4 Lampholders 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.
Lampholders are classified as follows.
6.1 According to their installation conditions
− unenclosed lampholders;
− enclosed lampholders;
− partly reinforced insulated lampholders;IEC 60838-1 pdf download.