Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:6v:p9
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 6V (pt 9/19)
Character Range: 144591–147716

Volts                                    13.2                                 28.0         13.2
Objective
values                                                                  Watts                               58 max.                                   75 max.      58 max.

Luminous
Flux lm                                                                 1500                                                         1750
+/- %
     10                                                                                                                      10
 Reference luminous flux for headlamp testing: 1100 lm at approx. 12 V

CATEGORY H7

                                                   Sheet H7/3
    1/ The reference plane is defined by the points on the surfaces of the holder on which the three supporting bosses of the cap ring will rest.

    2/ The reference axis is perpendicular to the reference plane and crosses the intersection of the two perpendiculars as indicated in figure 3 on Sheet H7/1.

    3/ Glass bulb and supports shall not exceed the envelope as indicated in figure 2 on sheet H7/1. The envelope is concentric to the reference axis.

    4/ Glass bulb shall be optically distortion free within the anglesgamma1 andgamma2. This requirement applies to the whole bulb circumference within the angles gamma 1 and gamma 2.

    5/ The obscuration shall extend at least to anglegamm 3 and shall extend at least to the cylindrical part of the bulb on the whole bulb top circumference.

    6/ The internal design of the lamp shall be such that stray light images and reflections are only located above the filament itself seen from the horizontal direction. (View (1) as indicated in figure 1 on sheet H7/1). No metal parts other than filament turns shall be located in the shaded area as seen in figure 5 on Sheet H7/1.

    7/ The end of the filaments are defined as the points where, when the viewing direction is direction (1) as shown in figure 1 on Sheet H7/1, the projection of the outside of the end turns crosses the filament axis. (Special instructions for coiled-coil filaments are under consideration)

8/ To be checked by means of a "Box system". Sheet H7/4.

    9/ The offset of the filament with respect to the reference axis is measured only in viewing directions (1) and (2) as shown in figure 1 on Sheet H7/1. The points to be measured are those where the projection of the outside of the end turns nearest to or furthest from the reference plane crosses the filament axis.

    10/ Offset of filament in relation to bulb axis measured in two planes parallel to the reference plane where the projection of the outside of the end turns nearest to or furthest from the reference plane crosses the filament axis.

11/ The bulb shall be colourless or selective-yellow.

12/ Notes concerning the filament diameter
    -No actual diameter restrictions apply but the objective for future developments is to have d max. = 1.3mm for 12V and d max. = 1.7mm for 24V filament lamps.
    -For the same manufacturer the design diameter of standard (etalon) filament lamp and filament lamp of