Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:6v:p2
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 6V (pt 2/3)
Character Range: 47599–52005

filament **/ which is nearer to the cap must lie between b1 and b2. The filament must lie entirely within the limits shown.
*/ See sheet H2/1.
**/ The end of the filament is defined at sheet H2/3.
Dimensions in millimetres.
CATEGORY H3

Sheet H3/1
Dimensions in millimetres

The bulb shall be colourless or selective-yellow.

CATEGORY H3

Sheet H3/2
Dimensions in millimetres
Definition: Ring centre and reference axis 2/

Definition of z-z line

 2/ The cap should be pressed in these directions.

 Filament dimensions and tolerances for standard filament lamps, see sheet H3/3

 View A: measuring h2
 View B: measuring k, h1, h3, f
 View C: measuring h4

CATEGORY H3

Sheet H3/3

DIMENSIONS in mm                                                      Filament lamps of normal production  Standard filament
                                                                                                           lamp
                                                                                                                              6V        12V    24V
e                                                                     18.0                                                    18.0
f7/                                                                   5/                                   5.0                +/- 0.50
                                                                      3.0 min 4.0 min
           k                                                          5/                                      0               +/- 0.0
           h1                                                         0                                    +/- 0.15 6/
           h3
           h2                                                         0                                    +/- 0.25 6/
           h4
Cap PK 22s in accordance with IEC Publication 61 (sheet 7004-47-3)

ELECTRICAL AND PHOTOMETRIC CHARACTERISTICS

Rated values
                                                                      V                                    6                  12        24            12

W                                                                     55                                   70                            55
Test voltage                                                          V                                    6.3                13.2      28.0
Objective values                                                                                                              max.      max.   max.       max.
                                                                                                           W                  63        68     84        68 at 13.2V

Luminous flux                                                         lm                                   1,050              1,450     1,750

+/- %                                                                 15
Reference luminous flux for headlamp testing, 1,100lm at approx. 12V

CATEGORY H3

sheet H3/4

  1/ The distortion of the base-end portion of the bulb must not be visible from any direction outside the obscuration angle of 80 degrees max. The shields must produce no inconvenient reflections. The angle between the reference axis and the plane of each shield, measured on the bulb side, should not exceed 90 degrees.

  2/ The permissible deviation of the ring centre from the reference axis is 0.5mm in the direction perpendicular to the Z-Z line and 0.05mm in the direction parallel to the Z-Z line.

  3/ Minimum length above the height of the light-emitting centre ("e") over which the bulb must be cylindrical.

  4/ No part of the spring and no component of the lamp-holder shall bear on the prefocus ring elsewhere than outside the rectangle shown in discontinuous outline.

  5/ These dimensions of lamps of normal production should be checked by means of a "box system" sheet H3/5

  6/ For standard filament lamps the points to be measured are those where the projection of the outside of the end turns crosses the filament axis.

  7/ The positions of the first and the last turn of the filament are defined by the intersections of the outside of the first and the outside of the last light-emitting turn, respectively, with the plane parallel to and 18mm distant from the reference plane (additional instructions for coiled-coil filaments are