IEEE P1138/D6

IEEE P1138/D6 is a draft standard focused on testing and performance requirements for optical ground wire (OPGW) intended for use on electric utility power lines. It addresses the technical characteristics that matter when a conductor also serves a communications role, helping define how the product should be evaluated for reliability, performance, and suitability in utility environments. For engineers, purchasers, and test labs, IEEE P1138/D6 provides a structured reference for comparing OPGW designs with greater consistency.

About IEEE P1138/D6

This document is aimed at the intersection of power transmission and communications engineering. As an IEEE draft standard, IEEE P1138/D6 concerns the testing and performance of OPGW, a component commonly used where overhead ground wire functions are combined with optical fiber pathways. Its technical context includes photonics and electrooptics as well as communication infrastructure in utility systems. The standard is useful for defining how OPGW materials, construction, and performance may be assessed before deployment or procurement.

Where is IEEE P1138/D6 used?

IEEE P1138/D6 is relevant in electric utility power lines that use optical ground wire for both grounding and communications support. It is commonly applied in transmission corridors, substation interconnection work, and utility fiber networks carried on overhead line structures. The document is also useful for test laboratories and engineering teams evaluating cable behavior, mechanical integrity, and optical performance under utility operating conditions. In practice, it supports selection and verification of OPGW for integrated power and communications systems.

Importance in practice

In practice, IEEE P1138/D6 helps reduce uncertainty when specifying or testing OPGW for utility projects. Clear performance and test expectations support more consistent procurement, better design control, and improved comparison between products from different suppliers. For power line applications, this can matter for long-term reliability, installation planning, and communication continuity. Using IEEE P1138/D6 as a reference may also help limit risk when utilities need a cable that must perform both electrical grounding and optical transmission functions.

• Optical ground wire testing criteria
• Performance expectations for utility line use
• Electrical and optical function in one cable
• Utility procurement and verification reference