Line Sag with Dynamometer

Kansas City Power & Light (KCP&L) uses dynamometers to "sag" 3-Phase conductor recently installed over I-35 just south of Kansas City. Host Utility: Kansas City Power & Light.

[@rixoff]

Great video! It would be helpful if you linked videos like this with the prior video (the previous day, running the line over the highway.) But the quality of this and your other videos are great, thanks for putting them out there.

[@rixoff]

Found the video, in case anybody else is looking: kzbin.info/www/bejne/pHXIp6iufbWapJY

[@ElectroTree01]

Interesting grips. Based on a couple of the clips shown at the start of the video and how the phases bring sagged are handled, I would say this line is de energized. I do not see any grounds though although the phase going over the crossarm lacks line hose and the crossarm doesn’t have any line blankets on it.

[@Powerhousered1223]

Stay safe out there. Keep the fire in the wire. Hope you guys stay safe on the road.

[@michaelgagne1911]

I always wondered how they tighten those lines just fantastic video

[@koda7820]

Definitely not done like this where I live in the south! They just tighten them tight or leave them loose

[@deplorablechump8758]

It’s interesting to see the neutral conductor above the phase conductors. Probably for lightning purposes?

[@najeebyousufi1360]

Great work

[@michaelgagne1911]

Great vid

[@richardperduta5777]

Glad to see our hoists and meters are working so well for you. Keep up the good work!

[@sreeram3247]

Why no insulator discs in the cross arms?

[@kirkhamandy]

There are insulator discs. You can clearly see them at 3:30 into the video.

[@satnam7namsingh158]

Please explain procedure... To attend 220 kv line breakdown

[@edsonbortolotti9419]

Top!!!

[@gregparker8349]

No sleeves! Be careful guys!

[@themotorcycleguy5980]

No rubber either lol

[@koda7820]

Doesn’t make sense to wear rubber gloves on something not energized.

[@drpaulosampaio6099]

bom

[@jaywillow9927]

A fucking chart the engineers made up for them. Sag the fucking line and see if it looks good. Nothing beats looks. Looks are 90 percent of the job.

[@DaveWave115]

Looks are good, but ensuring adequate electrical clearances and avoiding damaging the adjacent structures are just as important. The wire spans are very sensitive to temperature and tension. This is especially true for high voltage lines and deadends. What looks "good" at 60 degrees might pull over a tower on an icy day (when the tension can easily triple or quadruple from the everyday case). Alternately if it's a hot day when there is a lot of current in the wire, it can heat up to around 200 degrees and might sag to the point where it could arc to ground (the sag can also triple or quadruple). The difference between what looks "good" and starting a wildfire or killing someone might be a one foot stringing difference on a 300' span. Pretty hard tell the difference with just your eyeballs. The charts are developed to protect the crews working these jobs and the public.

[@deplorablechump8758]

Sag and tension come together buddy.

[@jefferylord3068]

its not a clamp, its a grip nimrod

[@jaywillow9927]

Cannot believe they're not wearing sleeves.

[@encorecodes-codesandstanda1077]

It is not live.....

[@leveewasbri]

No need for sleeves. New line is dead, but ran over another hot circuit. Gloves incase of something freak happening.

[@eddygilbert9906]

Sagging overhead cable ? Right on

[@bradbullard8572]

You called the foreman out for mispronouncing “dynamometer”, but then proceed to call grips and shoes “clamps”.🧐

[@deplorablechump8758]

Shoes are slang

[@gerardoquintero5379]

Excellent work gentlemen, great information!