PD IEC TS 60079-47:2021 PDF Download

PD IEC TS 60079-47:2021 is a technical specification that outlines the requirements for the construction, marking, and documentation of apparatus, systems, and installations that utilize the 2-Wire Intrinsically Safe Ethernet concept (2-WISE). This standard specifically focuses on the physical layer specification for 2-Wire Ethernet 10BASE-T1L, as defined in IEEE 802.3cg.

The 2-WISE concept is designed to simplify the examination process for intrinsic safety parameters of components and cabling within APL (Advanced Physical Layer) segments. It achieves this by establishing universal intrinsic safety parameter limits for APL ports and providing a clear set of rules for segment setup, based on specific hazardous area requirements.

It is important to note that while the requirements for construction and installation of 2-WISE devices and systems are included in existing standards such as IEC 60079-11, IEC 60079-14, and IEC 60079-25, this specification modifies certain aspects of those standards. The technical specification applies specifically to intrinsically safe circuits of the apparatus, with the Type of Protection for other parts of the device determined by the appropriate EPL (Equipment Protection Level) for the intended hazardous area.

In cases where there is a conflict between the requirements outlined in this technical specification and the requirements of IEC 60079-0, IEC 60079-11, IEC 60079-14, or IEC 60079-25, the requirements of PD IEC TS 60079-47:2021 take precedence.