本标准规定了爆炸性环境中使用的本安设备和相关设备的结构和测试，这些设备用于连接进入此类环境的本安电路。此类保护适用于电路本身无法在周围爆炸性环境中引发爆炸的电气设备。本标准也适用于爆炸性环境外的电气设备或电气设备部件，或受ANSI/ISA-60079-0中列出的另一种保护类型保护的电气设备或电气设备部件，其中爆炸性环境中电路的本质安全性可能取决于此类电气设备或电气设备部件的设计和构造。通过应用本标准，对暴露在爆炸性环境中的电路在此类环境中的使用进行评估。 本质安全系统的要求见ISA-60079-25 IEC 60079-25。本标准补充和修改了ANSI/ISA-60079-0 IEC 60079-0的一般要求，表1中所示的除外。如果本标准的要求与ANSI/ISA-60079-0 IEC 60079-0的要求冲突，应以本标准的要求为准。如果本标准中的要求适用于本安设备和相关设备，则本标准中使用术语“设备”。本标准仅适用于电气设备；因此，本标准中使用的术语“设备”始终指“电气设备”。如果相关设备被放置在爆炸性环境中，则应采用ANSI/ISA-60079-0 IEC 60079-0中列出的适当类型的保护装置进行保护，然后按照该保护方法的要求以及ANSI/ISA的相关部分进行保护- 60079-0 IEC 60079-0，也适用于相关设备。

This standard specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits which enter such atmospheres.This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion in the surrounding explosive atmospheres.This standard is also applicable to electrical equipment or parts of electrical equipment located outside the explosive atmosphere or protected by another Type of Protection listed in ANSI/ISA- 60079-0 where the intrinsic safety of the electrical circuits in the explosive atmosphere may depend upon the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits exposed to the explosive atmosphere are evaluated for use in such an atmosphere by applying this standard.The requirements for intrinsically safe systems are provided in ISA-60079-25 IEC 60079-25. This standard supplements and modifies the general requirements of ANSI/ISA-60079-0 IEC 60079-0, except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of ANSI/ISA-60079-0 IEC 60079-0, the requirements of this standard shall take precedence. If requirements in this standard are applicable to both intrinsically safe apparatus and associated apparatus the term "apparatus" is used throughout the standard. This standard is for electrical equipment only; therefore the term "equipment" used in the standard always means "electrical equipment". If associated apparatus is placed in the explosive atmosphere, it shall be protected by an appropriate Type of Protection listed in ANSI/ISA-60079-0 IEC 60079-0, and then the requirements of that method of protection together with the relevant parts of ANSI/ISA-60079-0 IEC 60079-0, also apply to the associated apparatus.