Fourth supplement to Publication 61-4 (1990) Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 4: Guidelines and general information
|Publication Date:||1 October 1995|
|ICS Code (Lamp caps and holders):||29.140.10|
With the issue of the IEC report 664: (1980), the supplement IEC 664A (1981) as well as the amendment 1 (1989), investigations have been started in order to estimate its influence on the existing publications of IEC TC 34: "Lamps and related equipment".
The decision to transform the IEC report into a basic safety publication in accordance with IEC Guide 104 resulted in relevant changes which started with IEC 598-1. A revised section 11 (creepage distances and clearances) is shown in the third edition (1992).
The basic safety publication IEC 664-1 is in the basic principles identical with the former IEC report but has been worked over editorially.