GB/T 17935-2007 Edison screw lampholders
GB/T 17935-2007 Edison screw lampholders
Basic Information
Scope
This standard applies to E14, E27, and E40 Edison screw-base lamps used when connected to a power supply.
This standard also applies to switchable lampholders used only in AC circuits with a working voltage not exceeding 250 V (rms).
This standard also applies to E5 screw-base lampholders used indoors in series-connected circuits with a working voltage not exceeding 25 V, E10 screw-base lampholders used indoors and outdoors in series-connected circuits with a working voltage not exceeding 60 V, and E10 recessed lampholders connected directly to a power supply. These lampholders are not intended for retail sale.
For the reasonable application of this standard, this standard also applies to non-Edison screw-base lampholders connected in series with a power supply.