标准号:IS 2206 Pt.3-1989
发布日期:1990/5/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard ( Part 3 ) covers the range of fixed lighting fittings of flameproof construction, intended for use where flammable gas or vapour may occur in explosive mixture with air. Flame-proof fittings covered by this standard are those types using plastic tubes to enclose tubular fluores-cent lamps ( Group I only ).NOTE — The use of these fittings is restricted to Group I application only as certain of the gases and vapours in Group IIA and 1IB attack some plastics and cause a decrease in strength.