IEC60061-3: 7006-15A-2 B22d Gauges for Checking Contact Position and Contact Force in Bayonet Lampholders

The drawing is intended only to illustrate the dimensions essential for interchangeability.

For details of lampholders B22d and BY22d, see sheets 7005-10 and 7005-17 respectively.

The drawing does not show a means of clamping the gauge in the lampholder.
The manner in which such means are provided depends on the design of the lampholder under test. However, it must be ensured that in every case both pins of the gauge are held firmly against the corresponding resting points of the lampholder.

(1) This value is optional and is recommended where the gauge is used for checking conventional pendant type holders. It is intended to simulate as nearly as possible the barrel of the lamp cap.

PURPOSE: To check lampholders B22d and BY22d with respect to:
a) Dimension Dmax.
b) The minimum and maximum forces of the individual contacts corresponding with those resulting from the fitting of caps B22d and BY22d of which the values of dimension D1 are minimum and maximum respectively.

TESTING:
a) To check dimension Dmax.
With the relevant gauge held firmly in the lampholder and with both retention pins held against the corresponding resting points, the plunger is inserted into the bore provided until it touches one of the holder contacts. With the lampholder held with its axis vertical and with the gauge uppermost, the mark Z1 on the plunger shall coincide with or be above the reference marks on the gauge body. During this test no force shall be applied to the plunger.
The test is repeated for the other holder contact.
b) To check the minimum and maximum contact force.
With the relevant gauge assembled in the lampholder as in a) above, an axial force is applied to the plunger until mark Z2 coincides with the reference marks on the gauge body. At this position the force shall be measured and shall be not less than:
- for B22d lampholders, the minimum force specified in table 3 of IEC 61184, or - for BY22d lampholders, the minimum force specified on lampholder sheet 7005-17.
The force is then increased until mark Z3 coincides with the relevant marks. At this position the force shall be measured and shall be not more than:
- for B22d lampholders, the maximum force specified in table 3 of IEC 61184, or - for BY22d lampholders, the maximum force specified on lampholder sheet 7005-17.
The test is repeated for the other holder contact.

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