Document ID: chunk:federal_register_of_legislation:F2023C00161:reg:400:p3
Version: federal_register_of_legislation:F2023C00161
Segment Type: reg
Provision Reference: reg 400 (pt 3/10)
Character Range: 26280–31856

the holder on which the three supporting bosses of the cap ring will rest.
2/ See sheet D1S/D2S/2.
    3/ When measured at a distance of 27.1mm from the reference plane and with respect to the mid-point of the inner bulb, the outer bulb shall have an eccentricity of 1mm max.

DlS and D2S Sheet DlS/D2S/2

       Figure 3 Definition of reference axis

       Figure 4 Maximum lamp outline

The reference axis is perpendicular to the reference plane and crosses the intersection of the two parallel lines as indicated in figure 3.

    2/ Glass bulb and supports shall not exceed the envelope, as indicated in figure 4.  The envelope is concentric with the reference axis.
Categories D1S and D2S   Sheet DlS/D2S/3

Dimensions                                                                                                                                           Production light sources        Standard light sources
Position of the electrodes                                                                                                                           Sheet D1S/D2S/4
Position and form of the arc                                                                                                                         Sheet D1S/D2S/5
alpha1, alpha2 [1/]                                                                                                                                  55 degrees min.                 55 degrees min.
Category D1S: cap PK 32d-2 in accordance with IEC 61-1 (sheet 7004-111-1) Category D2S: cap P 32d-2  in accordance with IEC 61-1 (sheet 7004-111-1)
ELECTRIC AND PHOTOMETRIC CHARACTERISTICS
Rated voltage of the ballast                                                                                                                         V                               12 [2/]                 12
Rated wattage                                                                                                                                        W                               35                      35
Test voltage                                                                                                                                         V                               13.5                    13.5
Lamp voltage                                                                                                                                         Objective                       V                       85                           85
Tolerance                                                                                                                                            +/- 17                          +/- 8
Lamp wattage                                                                                                                                         Objective                       W                       35                           35
Tolerance                                                                                                                                            +/- 3                           +/- 0.5
Luminous flux                                                                                                                                        Objective                       lm                      3,200                        3,200
Tolerance                                                                                                                                            +/- 450                         +/- 150
Colour co-ordinates                                                                                                                                  Objective                                               x = 0.375         y = 0.375
Tolerance area [3/]                                                                                                                                  x > 0.345  y < 0.150 + 0.640 x
                                                                                                                                                     x < 0.405  y > 0.050 + 0.750 x
Hot restrike switch-off time                                                                                                                                                         10                      10

       Categories DlS and D2S   Sheet DlS/D2S/4

Position of the electrodes

This test is used to determine whether the electrodes are correctly positioned relative to the reference axis and the reference plane.

Measuring direction: light source side and top view
Measuring direction: light source side and top view

Dimension in mm  Production light sources  Standard light sources
a1               d + 0.2                   d + 0.1
a2               d + 0.5                   d + 0.25
b1               0.3                       0.15
b2               0.6                       0.3
c                4.2                       4.2

d = diameter of the electrode < 0.3

The top of the electrode nearest to the reference plane shall be positioned in the area defined by a1 and b1. The top of the electrode furthest from the reference plane shall be positioned in the area defined by a2 and b2.
Categories DlS and D2S   Sheet DlS/D2S/5

This test is used to determine the form of the arc and its position relative to the reference axis and plane by measuring its bending and diffusion in the cross section at a distance 27.1mm from the reference plane.

The form of the arc is for illustration purposes only.

When measuring