Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:12v:p1
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 12V (pt 1/3)
Character Range: 208530–212304

12V  d + 0.4  d + 0.7  0.25  5.7  4.6

d = diameter of filament
The filament position is checked solely in directions A and B as shown on sheet H9/1.
The ends of the filament as defined on sheet H9/3, note 10/ shall lie between lines Z1 and Z2 and between lines Z3 and Z4.
CATEGORY H10

Sheet H10/1
The drawings are only to illustrate the essential dimensions of the filament lamp

1/ The reference plane is the plane defined by the meeting points of the cap-holder fit.
    2/ The reference axis is perpendicular to the reference plane and concentric with the reference diameter of the cap.
    3/ Glass bulb and supports shall not exceed the envelope and shall not interfere with insertion past the lamp key. The envelope is concentric to the reference axis.
4/ The keyway is mandatory.
    5/ The filament lamp shall be rotated in the measuring holder until the reference lug contacts plane C of the holder.
    6/ Glass bulb periphery shall be optically distortion-free axially within the angles gamma1 and gamma2. This requirement applies to the whole bulb circumference within the angles gamma1 and gamma2.
    7/ The obscuration shall extend to at least angle gamma3 and shall be at least as far as the undistorted part of the bulb defined by angle gamma1.
CATEGORY H10

Sheet H10/2

Dimensions in mm 8/
                                                        Tolerances

Filament lamps of normal                                Standard filament lamp
production
e 9/                                                    28.9                             11    +/- 0.16
10/                                                     5.2                              /     +/- 0.16
f 9/                                                                                     11
10/                                                     0                                /     +/- 0.15
h1, h2                                                                                   11
                                                                                         /     12/
gamma1                                                  50 degrees
                                                        min.

gamma2                                                  52 degrees
                                                        min.
gamma3                                                  45 degrees              +/- 5 degrees  +/- 5 degrees
Cap PY20d in accordance with IEC 61 (sheet 7004-..-..)
ELECTRICAL AND PHOTOMETRIC CHARACTERISTICS
 Rated values                                           Volts                            12    12

Watts                                                            42             42
 Test voltage                                           Volts                   13.2           13.2
 Objective values
                                                        Watts                   50 max.        50 max.

Luminous
flux 1m                                                 850
+/- %
         15
 Reference luminous flux: 600 1m at approx. 12V

8/ Dimensions shall be checked with O-ring removed.
9/ The viewing direction is direction */ B as shown in the figure on sheet H10/1.
    10/ The ends of the filament are defined as the points where, when the viewing direction */ as defined in note 9/ above, the projection of the outside of the end turns crosses the filament axis.
11/ To be checked by means of a " box-system". Sheet H10/3.*/
    12/ The eccentricity is measured only in viewing directions */ A and B as shown in the figure on sheet H10/1. 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.

    * Manufacturers may