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- เผยแพร่เมื่อ 28 ส.ค. 2024
- In a near-north Phoenix suburb, an Arizona Public Service Crew removes a capacitor bank to replace with a new one offering two-way communications with the Distribution Operations Center, critical to Smart Grid deployment and peak-load efficiency with the expansion of rooftop solar. Host Utility: Arizona Public Service
I'm a retired submarine electronics technician. I've watched a number of T&D World videos recently. The care and professionalism shown by the crews are exceptional and a model for other dangerous fields of work.
Not one word about hazards involved during the pre job briefing. Work performed in the primary area in leather gloves without 100% cover up. I don’t care if you read no load on that bank, you never open a cap without a load buster. Geez guys, bad shit happens in a heartbeat and can change lives forever. When complacency sets in, its time for a boot in the ass.
These are switched capacitors. You probably didn’t see the oil switches under the link break cut outs. The were measuring current confirm the switches were open. The capacitors have less than 50 volts after 5 mins from deenergization anyway. If the meter showed current and the switch was defective you would pull the lever on the cut out to deenegize the phase. Load break tool does not work well on a type C link break cutout. It’s not impossible but breaking the link is easier and a little safer. I total agree about prejob brief. No talk of dangers and what could go wrong.This was not gloving work and at this voltage minimum approach distance was never close so cover up with hoses would require gloves a different approach.
@@markmcvey7686 always use your loadbreak. better safe than sorry
No gloves and sleeves, love it.
+Daniel Groves But them gloves...theyre so hot and uncomfortable, sarcasm. If you did that where i work you'd get sent home for at least a week if not fired.
+AchillesWrath1 oh you would where I work too lol.
Daniel Groves the dish gloves are for rookies, once you learn your way around the poles and cans all you need is a union hat with stickers and a pension to bankrupt the state.
I once got a nice 7,200V shock from an undischarged 200kVAR correction capacitor, was completely disconnected from the power source for a while, had one hand on the ground and grabbed the "hot" wire with the other. Threw me back 5 FT and burned my fingers pretty good. No serious injuries of course, almost crapped my pants through. Now I will not touch one until I, myself short out the terminals to make absolute certainty there is no charge.
Luckily the shock from the capacitor is like a static discharge and very short in duration, otherwise you would have been fried lol
It's not dead if it's not grounded. ABC, 123... Mary had a little lamb. Capacitors have the capacity to kill you.
Glad you got the chance to learn from it yourself.... instead of being learned from.
I really am glad your ok.
metersocket00 shunt the can for Christ sakes.
Nothing about Safety procedure to discharge the Capacitors??
A cautionary tale. Always assume a capacitors is energized unless it is shunted. Single bushing to case and two bushing is bushing to bushing. Even though a capacitor has a discharge resistor installed you can never see if it is undamaged unless tested. My company requires all capacitors not in use to be shunted. Our specification from the manufacture requires the cans even for banks to be shunted for shipping.
Of course they’re showing they’re having a pre job safety meeting.
I’m sure most do, but from where I come from (we have to show things like that to show we are doing it for clients, even though we know what the hell we are doing) we know what to do, and communicate as we progress with our work. I’m not a lineman, but the work progresses the same, and safety is top priority. Just my line of work is considered “low risk” in most cases.
Backyardmech1 It’s physical labour, repetitive work. After doing it 50 times right you might make a slip on the 51th time. Such safety breefings are meant to keep your mind active on what you are doing and thus staying safe.
Hey T&DTV ... I have a question. Why did you go near the capacitors without discharging them or at least shunting across their terminals? Do they have internal bleeder resistors, or did you not show this in the video? ...
Because they grounded them and let em bleed off
It didnt show the most important part which is grounding the bank before bringing it to the ground
If APS is a sticking company as shown in other videos of them working, I would like to see the blankets and line hose being applied.
Dennis C they claim to be a hotstick company, but apply rubber with gloves.
Never seen anything about discharging the capacitors, ground it out ensure the capacitor is completely discharged.
Surely they did it tho :) There is discharge resistors in the housing, but it will take few minutes for it to discharge caps, especially the high voltage ones to safe level.
i don't have any electrical training. So these cap banks are basically used for voltage regulation?
no gloves, no sleeves, no loadbuster on the cutout opening at the beginning!! nice. Looks like a non union job
JR Conner you would use a loadbuster even after you amp checked it?
Arizona Public Service is a sticking company, IS union, doesn't require gloves or sleeves (not OSHA mandated) and don't have to conform to the same rules your company uses. Why would you need a loadbuster on a cap rack if your vac switches were confirmed open with an amp check?
Another dumb ass union guy. Too stupid to realize amps = load. No amps = no load buster.
Sincerely a dirty ole scab.
did I miss the step of grounding the old capacitors for safety
Hi Sir do you know what meter was used? Thanks
Заметил на 3:39 в машине в кузове тиски. Оригинально)))
Yes. I was somewhere and somebody had backed the vise handle into the wood and it bent the handle.
Y’all don’t shunt out the cells?
when u can do this work anymore... / u know squirrels.. :(