60061-4C-1994 Third 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 (Edition 1.0)
Troisième complément à la Publication 61-4 (1990) Culots de lampes et douilles ainsi que calibres pour le contr?le de l'interchangeabilité et de la sécurité Quatrième Partie: Guide et information généraux (Edition 1.0)
Third 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 (Edition 1.0) 是非强制性国家标准,您可以免费下载前三页
Introduction A coding system is in existence that can be used to assign designations to lamp caps and lampholders. Meaningful assignment can be made to the letters@ numbers and symbols that make up this designation. The system has gained international acceptance and should be used as much as possible. It is self-evident that there is a relationship between a certain lamp cap and the lampholder to be used with it. This relation is reflected in the relevant designation@ part of which is used in common for the two products. As a consequence of this system it is possible to compare caps and holders from various manufacturers and@ where they are interchangeable@ the same designation can be assigned to them. This system is also a powerful instrument for controlling proliferation of designs. Assignment of designations to new types of cap and holder is the prerogative of the experts group EPC of IEC Sub-Committee 348.