Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:6:p5
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 6 (pt 5/9)
Character Range: 245173–249491

in conjunction with the installation of headlamp cleaning device(s) conforming to Regulation No. 45. In addition, with respect to vertical inclination, the provision of paragraph 6.2.6.2.2. of Regulation No. 48, 01 series of amendments, shall not be applied when these lamps are installed.

    This restriction shall apply as long as there is no general agreement on the use of levelling devices and headlamp cleaners with respect to the level of the performance of the headlamp."

The text of the Regulation
Annex 1,
Sheets S4, should be deleted.
Sheet PY21W/1 (existing), replace by the new sheet PY21W/1.
Add at the end new sheets H12/1 to H12/3, to read:

CATEGORY PY21W

Sheet PY21W/1

DIMENSIONS in mm                                                        Filament lamps of     Standard
                                                                        normal production     filament lamp

min.                                                                    nom.                  max.
e                                                                                             31.8 3/                      31.8 +/- 0.3

f 4/                                                                                                            7.0        7.0                       +0

                                                                                                                                                     -2
Lateral deviation 1/                                                                          3/                           0.3 max.

beta                                                                    75 degrees            90 degrees        105        90 degrees +/- 5 degrees
                                                                                                                degrees
           Cap BAU15s in accordance with IEC Publ. 61(sheet 7004-19-1)
           ELECTRICAL AND PHOTOMETRIC CHARACTERISTICS
 Rated values                                                           V                     12                24         12
                                                                        W                     21                21
 Test voltage                                                           V                     13.5              28.0
Objective values
                                                                         Watts                W                 26.5 max.  29.7 max.                 26.5 max. at 13.5V

Luminous flux                                                           lm                    280
+/- %                                                                   20
 Reference luminous flux:                                                Amber bulb : 280 lm  at approx. 13.5V

 Clear bulb : 460 lm

    1/ Maximum lateral deviation of filament centre from two mutually perpendicular planes both containing the reference axis and one containing the reference axis and one containing the axis of the reference pin.
2/ The bulb of production lamps shall be amber. (See also note 5/).
3/ To be checked by means of a box system, sheet PY21W/2.
    4/ For 24-Volt heavy-duty lamps having a different filament shape, additional specifications are under consideration.
    5/ The bulb of standard filament lamps shall be amber or clear. For amber standard filament lamps, changes of the bulb temperature shall not affect the luminous flux which might impair photometric measurements of signalling devices. Moreover the colour shall be in the lower part of the tolerance area.

CATEGORY PY21W

Sheet PY21W/2
Screen projection requirements
This test is used to determine, by checking whether the filament is correctly positioned relative to the reference axis and the reference plane and has an axis perpendicular, within +/- 15 degrees , to the plane through the centre line of the reference pin and the reference axis, whether a filament lamp complies with the requirements.

Reference  a    b    h    k
Dimension  3.5  3.0  9.0  1.0

Test procedures and requirements.

           1. The filament lamp is placed in a holder capable of being rotated about its axis and having either a calibrated scale or fixed stops corresponding to the angular displacement tolerance limits. The holder is