Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:24v:p2
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 24V (pt 2/2)
Character Range: 56351–57968

in the right-hand column relate to the passing beam.
CATEGORY H4

Sheet H4/3

Position of shield */

*/ The drawing is not mandatory with respect to the design of the shield.
** 30.0 for the 14V type.
CATEGORY H4

Sheet H4/4

Position of filaments */

Dimensions in mm

*/ The drawing is not mandatory with respect to the design of the shield.
** 30.0 for the 14V type.
CATEGORY H4

Sheet H4/5
Additional explanations to sheets H4/3 and H4/4 The dimensions below are measured in three directions:

            (1)            for dimensions a, b1, c, d, e, f, lR and lC;
            (2)            for dimensions g, h, p and q;
            (0)             for dimensions b2.
               Dimensions p and q are measured in a plane parallel to and 33mm away from the
               reference plane.
               Dimensions b1, b2, c and h are measured in planes parallel to and 29.5mm
               (30.0mm for 24V lamps) and 33mm away from the reference plane.
               Dimensions a and g are measured in planes parallel to and 26.0mm and 23.5mm
               away from the reference plane.

Note: For the method of measurement, see Appendix E of IEC Publication 809.

CATEGORY H4

Sheet H4/6

Table of the dimensions referred to in the diagrams on sheet H4/3 and H4/4 (in mm)

                          Reference                     Dimension
                                                                                            Tolerances

Filament lamps of normal               Standard
production                             filament
                                       lamp