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NEK IEC TS 63444:2026

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Abstract

IEC TS 63444:2026 is applicable to process automation equipment using a 10BASE-T1L compliant Physical Layer (PHY). Ethernet-APL intrinsically safe profiles with different predefined entity or limitation parameters (for example voltage, current, power, capacitance, inductance, cable length) simplify the examination of the interconnection of different Ethernet-APL ports. Furthermore, this document is also applicable to factory and building automation and control equipment using a 10BASE-T1L compliant, and Power over Data Lines (PoDL) compliant Physical Layer (PHY) for non-intrinsically safe Ethernet installations.NOTE In this document the term Ethernet-SPE is used for PoDL compliant PHY.The following technical features are part of this document:- topology with trunk and spur installation capability;- 2-wire technology (full-duplex communication data rate of 10 Mbit/s);- long distance (refers to cable lengths of several hundred meters, with spans up to 1 000 m);- intrinsic safety (installation of Ethernet-capable field devices in hazardous areas);- power supply to field devices over the same 2-wire cable used for data communication;- non-intrinsically safe Ethernet installation in factory and building automation.This second edition cancels and replaces the first edition published in 2023. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:a) new power class for Ethernet-APL;b) addition of Ethernet-SPE;c) clarification of usability of Ethernet-APL in non-hazardous locations.

Document information

  • Standard from NEK
  • Published:
  • Edition: 2.0
  • Version: 1
  • Document type: TS
  • ICS 29.240
  • National Committee NEK/NK65

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