Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:6v:p10
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 6V (pt 10/19)
Character Range: 147491–151526

but the objective for future developments is to have d max. = 1.3mm for 12V and d max. = 1.7mm for 24V filament lamps.
    -For the same manufacturer the design diameter of standard (etalon) filament lamp and filament lamp of normal production shall be the same.
CATEGORY H7

Sheet H7/4

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, whether a filament lamp complies with the requirements.
Dimensions in mm

      a1        a2        b     b    c1   c2

12 V  d + 0.30  d + 0.50  1 2   4.6  4.0
                          0.2
24 V  d + 0.60  d + 1.00  0.25  5.9  4.4

d = diameter of filament
The ends of the filament as defined on sheet H7/3, footnote 7/, must lie between lines Z1 and Z2 and between lines Z3 and Z4.
The filament position is checked solely in directions (1) and (2) as shown on sheet H7/1, figure 1.
The filament must lie entirely within the limits shown.
CATEGORIES H27W/1 AND H27W/2

Sheet H27W/1
 The drawings are intended only to illustrate the essential dimensions of the filament lamp.
 Category H27W/1

 Category H27W/2

  Filament dimensions and position

  (Dimension f for all filament lamps)

  (Dimensions h1, h2, h3, h4 and k for standard filament lamps only)

CATEGORIES H27W/1 AND H27W/2

Sheet H27W/2

Dimensions in mm                                        Filament lamps of normal production  Standard
                                                                                             filament lamp

12 V                                                                                         12 V
e                                                       31.75 6/                                            31.75 +/- 0.25

f 8/                                                    4.8 max.                                            4.2 +/- 0.2

k                                                       0 6/                                                0.0 +/- 0.25

h1 ; h3 7/                                                   0 6/                                           0.0 +/- 0.25

h2 ; h4 7/                                                   0 6/                                           0.0 +/- 0.25

gamma1 4/                                               38 degrees nom.                                     38 degrees nom.

gamma2 4/                                               44 degrees min.                                     44 degrees min.

    H27W/1: PG 13
Cap in accordance with IEC Publ. 61 (sheet 7004-107-1)
    H27W/2: PGJ13
ELECTRICAL AND PHOTOMETRIC CHARACTERISTICS
Rated values                                            Volts                                     12                              12

Watts                                                        27                                                  27
Test voltage                                            Volts                                     13.5                            13.5
Objective
values                                                  Watts                                31 max.                         31 max.

Luminous                                                     477
Flux lm
+/- %
                                                             15
Reference luminous flux: 477lm at approx. 13.5V

    1// The reference plane is the plane formed by the underside of the bevelled lead-in flange of the cap.
    2/ The reference axis is perpendicular to the reference plane and passing through the centre of the 13.10mm cap diameter.
    3/ Glass bulb and supports shall not exceed the size of a theoretical cylinder centred on the reference axis.
    4/ Glass bulb shall be optically distortion-free within the angles gamma 1 and gamma 2. This requirement applies to the whole bulb circumference within the angles gamma 1 and gamma 2.
    5/ The obscuration shall extend over the whole bulb top including the bulb cylindrical portion