BS PD IEC/TS 60079-39:2015规定了施工、测试、安装和维护 使用电子控制火花持续时间的Power-i设备和系统 保持足够本质安全水平的限制。本技术规范包含本质安全设备和接线的要求 用于爆炸性环境和相关设备 与进入此类大气的本质安全电路的连接。本技术规范不包括保护等级“ia”和受控软件的使用 电路。本技术规范适用于电压不高于 对于IIB、IIA、I和III组，直流电压为40 V，安全系数为1.5。它也适用于IIC组 安全系数为1.0的“ic”装置。安全系数为1.5的IIC组“ib”装置 仅限于32 V d.c.的电压。这种类型的保护适用于电路 它们本身不能引起周围爆炸性环境的爆炸。 本技术规范适用于本质安全设备和系统 利用电子控制的火花持续时间限制，以提供更多火花 电力供应，同时保持足够的安全水平。本技术规范也适用于电气设备或电气部件 位于危险区域外或受所列其他保护类型保护的设备 在IEC 60079系列中，爆炸性环境中电路的本质安全性 大气取决于此类电气设备或部件的设计和施工 这样的电气设备。对危险区域内的电路进行评估 通过应用本技术规范在此类场所使用。本技术规范补充和修改了IEC 60079-0的要求， IEC 60079-11、IEC 60079-14、IEC 60079-17和IEC 60079-25。交叉引用:IEC 60079-0IEC 60079-11IEC 60079-14IEC 60079-25购买时可用的所有现行修订版均包含在本文件的购买中。

BS PD IEC/TS 60079-39:2015 specifies the construction, testing, installation and maintenance of Power-i apparatus and systems which utilise electronically controlled spark duration limitation to maintain an adequate level of intrinsic safety.This Technical Specification contains requirements for intrinsically safe apparatus and wiring intended for use in explosive atmospheres and for associated apparatus intended for connection to intrinsically safe circuits entering such atmospheres.This Technical Specification excludes the level of protection "ia" and the use of softwarecontrolled circuits.This Technical Specification applies to electrical equipment utilising voltages not higher than 40 V d.c. and a safety factor 1,5 for Groups IIB, IIA, I and III. It is also applicable to Group IIC "ic" apparatus with a safety factor 1,0. Group IIC "ib" apparatus with a safety factor 1,5 are restricted to voltages up to 32 V d.c.This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion of the surrounding explosive atmospheres.This Technical Specification is applicable to intrinsically safe apparatus and systems which utilise electronically controlled spark duration limitation with the aim of providing more electrical power while maintaining an adequate level of safety.This Technical Specification is also applicable to electrical equipment or parts of electrical equipment located outside hazardous areas or protected by another type of protection listed in the IEC 60079 series, where the intrinsic safety of the electrical circuits in explosive atmospheres depends on the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits located in the hazardous area are evaluated for use in such locations by applying this Technical Specification.This Technical Specification supplements and modifies the requirements of IEC 60079-0, IEC 60079-11, IEC 60079-14, IEC 60079-17 and IEC 60079-25.Cross References:IEC 60079-0IEC 60079-11IEC 60079-14IEC 60079-25All current amendments available at time of purchase are included with the purchase of this document.