Document ID: chunk:federal_register_of_legislation:F2023C00159:body:0:p11
Version: federal_register_of_legislation:F2023C00159
Segment Type: other
Provision Reference: 
Character Range: 28502–31437

The conformity requirements shall be considered satisfied from a mechanical and a geometric standpoint, in accordance with the requirements of this Regulation, if any, if the differences do not exceed inevitable manufacturing deviations.

       1.2. With respect to photometric performance, the conformity of mass-produced lamps shall not be contested if, when testing photometric performances of any lamp chosen at random and equipped with a standard filament lamp, or when the lamps are equipped with   non-replaceable   light   sources   (filament   lamps   or   other),   and   when   all measurements are made at 6.75 V, 13.5 V or 28.0 V respectively:

       1.2.1. No measured value deviates unfavourably by more than 20% from the values prescribed in this Regulation.

       1.2.2. If, in the case of a lamp equipped with a replaceable light source and if results of the test described above do not meet the requirements, tests on lamps shall be repeated using another standard filament lamp.

       1.2.3. Lamps with apparent defects are disregarded.

       1.3. The chromaticity coordinates shall be complied with when the lamp is equipped with a standard filament lamp, or for lamps equipped with non-replaceable light sources (filament lamps or other), when the colorimetric characteristics are verified with the light source present in the lamp.

       2. FIRST SAMPLING

       In the first sampling four lamps are selected at random. The first sample of two is marked A, the second sample of two is marked B.

       2.1. The conformity is not contested

       2.1.1. Following the sampling procedure shown in Figure 1 of this annex the conformity of mass-produced lamps shall not be contested if the deviation of the measured values of the lamps in the unfavourable directions are:

       2.1.1.1. sample A

A1:  one lamp                0%
     one lamp not more than  20%
A2   both lamps more than    0%
     but not more than       20%

       go to sample B

       2.1.1.2. sample B

B1:  both lamps  0%

       2.1.2. or, if the conditions of paragraph 1.2.2. for sample A are fulfilled.

       2.2. The conformity is contested

       2.2.1. Following the sampling procedure shown in Figure 1 of this annex the conformity of mass-produced lamps shall be contested and the manufacturer requested to make his production meet the requirements (alignment) if the deviations of the measured values of the lamps are:

       2.2.1.1. sample A

A3:  one lamp not more than  20%
     one lamp more than      20%
A2   but not more than       30%

       2.2.1.2. sample B

       B2:  in the case of A2

   one lamp more than      0%
   but not more than       20%
   one lamp not more than  20%

       B3:  in the case of A2

   one lamp more than      0%
   but not more than       20%
   one lamp not more than  30%

       2.2.2. or, if the conditions of paragraph 1.2.2. for sample A are not fulfilled.