Question on the utility of having GPS in a phase angle meter. The current TSM has, as an option, what I call Astrosync. This allows measurement of the angle between the voltage zero cross and the GPS PPS signal and that permits the use of two TSM meters to identify phasing at remote locations. The 60HZ line frequency is very accurate and only moves very slowly with respect to the GPS. You can therefore use two meters, two people, and a phone to compare angles. You can also estimate line Z based on power transfer if you know the voltage angle difference on a given phase. How useful is this? Should I include it in the new meter? See video below.
I typically don’t do any Utility work. We work mostly on the customer end. We do however interface with the Utility company, but it is mainly because the Utility provides protection settings for the Main breakers on their 15kV system. So they witness us test the relays to meet their specifications.
So as far as needing to GPS a meter, it sounds like a good idea. I can’t speak for how useful it is to the Utility companies. Someone from the Utility would have to follow up and speak on what they would like to see.