DIN EN 60061-2-2017 灯头和灯座及互换性和安全控制用量规.第2部分:灯座(IEC 60061-2-1969+补充件A-1970至S-1997+A18-1998至A48-2014+A49-2015+A50-2015,修订本).德文版本EN 60061-2-1993+A1-1995至A7-1997+A18-1998至A48-2015+A49-2015+A50-2015
Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 2: Lampholders (IEC 60061-2:1969 + supplements A:1970 to S:1997 + A18:1998 to A48:2014 + A49:2015 + A50:2015, modified); German version EN 60061-2:1993 + A1