B22 Not Go Gauge for Lampholders 7006-12B-2

IEC60061-3: 7006-12B-2 B22 Not Go /Retention Gauge for Lampholders

The drawing is intended only to illustrate the essential dimensions of the gauge.

For details of holder B22, see sheet 7005-10.

PURPOSE: The use of this gauge is restricted to the following purposes:
a) To check the maximum internal diameter, dimension A, of lampholders of "all-ceramic" construction according to sheet 7005-10, with respect to maintaining retention of caps by both pins and to restricting angular displacement of lamps.
b) To check the maximum internal diameter, dimension A, of lampholders according to sheet 7005-10 with respect to maintaining retention of caps by both pins and to restricting angular displacement of lamps, after the test of clause 18: General resistance to heat, of IEC 61184: Bayonet lampholders.

TESTING:
a) With its axis parallel to the axis of the lampholder, it shall not be possible to insert the gauge (including the pin) into the bore of the lampholder other than at the "J" slots or at other points where it is not intended that the lamp cap should be supported.
b) The gauge shall be inserted into the bore of the lampholder with the pin in one of the "J" slots and turned until the pin is seated at the appropriate resting point. The gauge then is displaced laterally away from the direction of the pin as far as it will go in order to reduce retention to a minimum.
In this position it shall not be possible to remove the gauge when an axial pull is applied to it.
The test is repeated at the other "J" slot.