標準號：SS 254 Pt.3A-1981
中文標準名稱：爆炸性空氣中使用的電氣設備規范．第3A部分：本質安全和輔助設備的結構和測試
英文標準名稱：SPECIFICATION FOR Electrical Apparatus for Explosive Gas Atmospheres Part 3A : Construction and Test of Intrinsically-safe and Associated Apparatus
發布日期：1981/1/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This specification applies to electrical apparatus, or parts of such apparatus, intended for use in explosive atmospheres, in which the electrical circuits themselves are incapable of causing ignition.This specification applies not only to apparatus or parts of apparatus in the hazardous area, but also to any parts located outside the hazardous area, where the intrinsic safety of the electrical circuits in the hazardous area may be influenced by the design and construction of such parts.This specification must be read in conjunction with SS 254 : Part 0.