標準號：SIS SS-EN 60 238-1990
中文標準名稱：圓螺紋燈座
英文標準名稱：Edison screw lampholders
發(fā)布日期：1990/12/5 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This standard applies to lampholders with Edison thread El4, E27 and E40, designed for connection to the supply of lamps and semi-luminaires* only.It also applies to switched-lampholders for use in a.c. circuits only, where the working voltage does not exceed 250 V r.m.s.This standard also applies to lampholders with Edison thread EK) designed for connection to the supply of series-connected lamps with a ratcd voltage not exceeding 60V. to be used indoors or outdoors.As far as it reasonably applies. this standard also covers lampholders other than lampholders with Edison thread designed for connection of series-connected lamps to the supply.This typc of lampholdcr is for cxamplc uscd in Christmus-trcc lightini: ch;ins.As far as it reasonably applies. the standard also covers lampholders which are. wholly or partly. integral with a luminaire or intended to be built into appliances. Independcnt lampholders. e.g. back-plate lampholders, not specifically intended for building-in. are also tested as luminaires.