"Live front" padmount transformer

Рет қаралды 56,683

Жыл бұрын

This is an older unit that's in a locked compound within our property.
Many of the newer units have a removable insulated fire wall between the door and the live terminations.
I should that some stick work is approved for live fronts. A few examples would be: a simple potential check, amp check or even phasing checks.
We no longer install live front equipment of any kind in our area.

Пікірлер: 113

@sealstech8087 6 ай бұрын

Ill never forget. Growing up my father was a substation technician. His bid was for replacing earthing circuits to substation structures after crackheads would break in and cut the copper out and then encase it all in steel strut down to the grade. I was maybe 10 and he took me to work one day. We get to the station and he explained to me where to be and where to not be. I asked “why?” And no sooner did I say that, I hear a zap and a smoldering carcass of a bird lands at my feet. He shrugs and says, “thats why”. Then I watched him grab the hot sticks to short the 3 phases and neutral to ground so they could safely work and weld on the circuit. 338kv was the largest disconnect he worked with 😮

@armaletalia3254 Ай бұрын

Holy shit 😮

@virt1one Ай бұрын

those are some pretty substantial slabs of copper in there, better not let the meth heads know about that....

@erzahler1930 19 күн бұрын

If those meth heads try obtaining that, they will never have to worry about another fix.

@wyliecoyote1 6 ай бұрын

Smart man, follows safety precautions, makes it home at the end of the day. 👍

@donh6416 4 ай бұрын

Our aluminum plant electricians took a class at the Bonneville Power Administration (part of the US Dept of Energy). BPA was testing 1 million volt trasmission lines. To walk under those lines was like having an entire ant hill crawling over your skin. The electromagnetic field was incredible. You could hold a florescent tube in your hand and it would glow brightly. High voltage is something to respect.

@TechOne7671 Жыл бұрын

Man that thing is a death trap. No secondary protection, just HV tappings in yer face. Brilliant informative real life videos mate. Cheers

@merllhagard6799 Жыл бұрын

Understanding you're in Canada, the general engineering of these systems and components are extremely similar to standard US practice. As a Com/Res sparky of 8 yrs, I can definitely say that I'll be going to school to learn this and eventually move on to being an on-call HV primary service tech as yourself. Linemen run the damn world! ❤

@user-ps3su8li4e Жыл бұрын

Don’t forget about your local NETA techs that specialize in testing and maintaining the electrical infrastructure too 🫡

@troybrown5663 Жыл бұрын

He must be really nervous to be able to say "say stafe". Lol. Good video man. Stay safe

@iqoverlord Жыл бұрын

Almost 30 years ago I had to assist a electrician with pulling the main power feed from a pad mount trans to building thru underground piping. The power company came out to opened it up and covered the hot lines coming with those rubber pads. I don't remember any divider and could feel static electricity the whole time.. I am not ashamed to say I was sweating bullets. Being that close to the live lines even when covered.. Due to the transformer supplying several homes and part of the sport center in the high dollar neighborhood the power company wasn't going to de energize the transformer until the were going to connect the power to the new building...

@Tw1steD247 6 ай бұрын

Amazing how the "level" of clientele how quickly safety can go out the window..smh

@linemanap 6 ай бұрын

That wasn't static that was inducion

@user-zq6pj5jo8j 6 ай бұрын

That hum, makes me shiver...So scary....Uggg

@josemilian4167 6 ай бұрын

used to play on those as kid so did all neighbors kids.

@paulsims9155 Жыл бұрын

Im anxious sitting at home lookin at that. 😮 Stay safe.

@Adeadcop702 Жыл бұрын

I’m glad someone said it

@CheMechanical Ай бұрын

Just opening the doors and looking at the terminals scares the shit out of me. I can’t help but think what an electrical engineer once told me: “It will kill you, and it will hurt the whole time you are dying.“

@Ghauster Ай бұрын

One of my instructors was a Navy electricity/electronics man. He also dealt with the base owned poles. One July 4th, after completing their work on a line. Two of the crew decided to throw firecrackers from the top of the tower. One lived. The other got to close to the primary well throwing. The lump lived for two days in the hospital. Respect for the lines and safely must be practiced at all times.

@eldenrivas7842 Жыл бұрын

We have a lot of those left in our territory. We turn off ours and by pass them when we need to change them out or work on them as well.

@victorjeffers1993 4 ай бұрын

My total Respect to all you men or women working on high voltage and all the linemen or women working on power lines ! 👍👍You Sir stay safe ! I have a son going to lineman's school right now needless to say I will worry bout him once he gets on the job !

@blacksheeple2187 Жыл бұрын

Definitely don’t to let the smoke out on that piece of equipment!!⚡️ 😎….I’ll stick to my 480 and below… I get the same feeling being too close to the edge of a roof as I get being close enough to hear the sixty cycle hum of that medium voltage gear. (fifty cycle hum🇨🇦) 👻. Stay safe brother!

@vacuumboy6.0 Жыл бұрын

480 will smoke you real quick and in a hot hurry too

@georgeswindoll9138 Жыл бұрын

I used to have a nonchalant attitude towards 480v, until I had a very close encounter (arc flash)!!!!!!!

@vacuumboy6.0 Жыл бұрын

@@georgeswindoll9138 you probably have permanent uv burns to your eyes. Sometimes the arc is so powerful it's like a bomb

@joeanderson444 8 ай бұрын

Considering every NEMA cabinet with hardware bolted to the backplane is asking for you to trip over the bottom of the door lip to have your face plaster against one of the bare pieces of metal carrying juice from one of the phases that just happens to not have an acrylic cover over it. I always keep one foot back and always try to lean backwards just slightly when in a cabinet full of hungry flesh-smokin' electrons!

@deepspacecow2644 7 ай бұрын

@@joeanderson444-48vdc is plenty for me

@5Dale65 5 күн бұрын

In Europe all the transformers look the same, either pole mounted or ground mounted. The ones on the ground are hidden in small buildings or cabinets, a which have two doors. Behind one of them is the transformer itself and the high voltage connections, all exposed. It's often called the transformer chamber. They can't get in there with the power on. Behind the second door is the low voltage distribution stuff, so if anything goes wrong there they can enter that part of the cabinet without dropping the primary.

@Platypi007 2 ай бұрын

When you can hear how angry it is you know it's dangerous

@RyCorp77 Жыл бұрын

Aighhhyighyigh. That’s a dangerous box. Load break and dead break elbows are all I know, but the fact you can open that tranny up on the hv side with bare lugs is crazy.

@crockpot5194 Жыл бұрын

Your hot stick is made of fiber glass so youll be half ok

@Mr1121628 6 ай бұрын

You mean “Ay yi yi”!

@robertgift Жыл бұрын

Like: "BEFORE DIGGING OR DRIVING STAKES IN THIS VICINITY ..."

@thomasvlaskampiii6850 Жыл бұрын

Yeah... Touching anything while that's energized could result in you being extra crispy

@IAmTheShaz 10 ай бұрын

Still don’t know what a “live front “ means.. 🤷‍♂️ even though you just showed us one. Lol. Love the vids anyway. It’s always interesting to see how all this equipment works and looks like up close. Thanks for sharing your work with us!

@stevenmora3282 10 ай бұрын

The terminations don't have any type of protection on them. Most transformers terminate with dead break elbows or Load break elbows.

@IAmTheShaz 10 ай бұрын

@@stevenmora3282 ah, thank you for explaining that😊

@ke6gwf 6 ай бұрын

Dead front is when all the hot terminals are insulated so that accidental contact is minimized. This is the opposite lol

@CheMechanical Ай бұрын

“Live front” means don’t touch anything if you want to stay alive. ; { )

@ElectroTree01 Жыл бұрын

Interesting setup

@Hellkinssince1989 Ай бұрын

I see and work on these monthly, but dead fronts mostly. Our primary voltages go from 4kv to 19.9kv and our secondary voltages are 120/240, 120/208, and 277/480

@lewy1 Жыл бұрын

There are lots of live fronts that you can switch out of .

@moondogdieselworks3883 Жыл бұрын

Awesome!!! I would love to see more of the inside of other equipment as well.

@na23ps1 11 ай бұрын

Widow makers… stay safe brother!

@DabblelyDiddly 6 ай бұрын

things full of some very pissed off pixies

@Bacongrease00 Жыл бұрын

Widow maker

@lmcoopie 24 күн бұрын

I’d need a very long stick to open that door, thanks.

@azael831 Жыл бұрын

Need arc face shield, balaclava, hearing protection and more according to NFPA70e.

@saltybuckeye 6 ай бұрын

look at all those potheads

@jameshartsing8652 Жыл бұрын

I have seen one of these open before. 480 volt secondary. 2500 KVA I think? I know there was a 3000 amp breaker on the 480 volt side.

@royalvarez6436 Жыл бұрын

Curious to know why head, and face flash gear are not required when the equipment seems to have a fault. Seems that in the case of an arch potential opening the containment wall would make you the easiest path to ground?

@Bobsdecline Жыл бұрын

I'm the event of a flash, it's not typically being a path to ground that's a concern (as you're not in contact with the wires) but the intense heat from the flash. As this unit sits for dozens of years it's extremely unlikely that a fault would occur at the exact moment that you're there. If we're there as a result of trouble of any sort, we would de-energize the unit before even opening the doors. In some case where switching is allowed with live front equipment, face shield and even a "bomb suit" is required. You'll typically see this in switch gear enclosures.

@lukes2656 Жыл бұрын

I’ve only ever worked on dead front transformers. How do you move a phase to stand-off/parking on a live front? Do you have to de-energize at riser pole/switch gear? Love the videos!

@lewy1 Жыл бұрын

A lot of them have 3 bushings per phase with the centre having a fused link feeding the transformer and the 2 outside are the in and out on a loop. The barrels are very similar to a cut out on a pole.

@user-mf5ll8sm6e 3 ай бұрын

Will a live front pad mount only be found within the confines of a substation? So clearly there are various levels of access to the things you do . We’ve seen you enter substation control rooms and alter things , seen you change things in the high voltage bus work. You’ve spoke of things you can not do in a bucket, while doing things right beside that don’t appear terribly more technical What are the assess levels - how are they denoted and how do you earn a higher level?

@Sampsss Жыл бұрын

That white phase has a hell of bend to her

@astifcaulkinyeras 5 ай бұрын

You can check voltage on the secondary though, right?

@cruz47144 6 ай бұрын

Why no protective clothing visable?

@phatcowboy76 Жыл бұрын

You are way too close to that 12.5 kv. Geez. And I'm an industrial electrician. I don't get into the high side though.

@daveday4251 10 ай бұрын

Nice forcing cones

@oicfas4523 Жыл бұрын

How do you know that it's a live front before opening it? I don't see any notice on the front, but I may have just missed it.

@benefactionhindrance Жыл бұрын

How is that even a live front? You don’t see the windings. Looks just like a dead front

@lewy1 Жыл бұрын

Live fronts have exposed primary where a dead front it is all in insulated connectors

@alexanderadams3437 Жыл бұрын

Why is there a hose bib in there?

@rupe53 Жыл бұрын

the hose connection is to drain the oil if it needs servicing. (they are oil filled for cooling)

@erzahler1930 19 күн бұрын

I know this is 60 Hz AC, but why is there also a 120 Hz hum? Full sine wave?

@anonamouse5917 15 күн бұрын

Maybe it's a harmonic from the 3 phases?

@johnhershey4010 Жыл бұрын

Don't be pissing on Thows 12,470Vott

@chris76-01 11 ай бұрын

Unless you want to roast your weenie. Lol. ⚡️

@johnhershey4010 11 ай бұрын

@@chris76-01 I like to call mine Johnson and Johnson 😂

@hardmechanic1624 Жыл бұрын

❤❤🎉

@seanstrickley3992 Жыл бұрын

What about current transformers dont they have capabilities of pulling u inside unit?

@user-co2ku9wm4u 9 ай бұрын

Крутяк 👍👍👍

@robertgift Жыл бұрын

Thank you. Do you check with a voltmeter after de-energized. I am always concerned about a short feeding back from some other direction.

@joeanderson444 8 ай бұрын

A CAT IV meter only allows for up to 1,000 VAC. The probes alone on a meter that can test 12,400 P-P would look like 3/8" bolts. I don't think I've ever seen a handheld meter that can safely test for absence of voltage at this force of electrons!

@cew995 6 ай бұрын

A.B. Chance and Hastings make hi-voltage meters that mount on a hot stick . Any lineman knows if it’s not great it’s not dead.

@keithjurena9319 Жыл бұрын

I see spider webs.

@chris76-01 11 ай бұрын

Spiders are exempt from safety rules. 😂

@ocsrc 6 ай бұрын

Why is that so loud ?

@FooLoni Жыл бұрын

How many secondary connections can be connected to one pad-mounted transformer ?

@chris76-01 11 ай бұрын

As many as you can fit without touching other parts.😊probably 4 is enough most of the time.

@idontneedaname85 Жыл бұрын

scary!!!!!!!!

@edwinmorales5466 Жыл бұрын

Where did you buy the 20kV rated gloves?

@Sampsss Жыл бұрын

Any utility dealer, they must be tested by an approved authority every 90 days

@richardfarrelly5765 10 ай бұрын

it's buzzing to kill💀

@ocsrc Ай бұрын

That loud buzzing doesn't sound good😮

@jessepage8268 Жыл бұрын

Say stafe guys

@jordanhicks5131 6 ай бұрын

I dont see any transformers, where is optimus prime?

@Bobsdecline 6 ай бұрын

That's the whole point.... You're not supposed to see him while in disguise 🥸😦

@assassinlexx1993 Жыл бұрын

This is not a homeless apartment.

@chris76-01 11 ай бұрын

Lol. Not much living space unless you're a midget 😂

@matthewtaylor3351 6 ай бұрын

Sobering reminder why these are behind locked gates.

@dandearman2871 Жыл бұрын

I think If I were opening that up for a first look I would also be wearing my arc flash suit and hood. Is it just me?

@bbuggediffy Жыл бұрын

Crt screens had a padmount!

@clbontheriver4818 6 ай бұрын

Pop ya like a hot dog in a microwave

@Cire605 8 ай бұрын

That looks sketchy as hell bro.

@Android_Warrior Ай бұрын

I don't want your job for a trillion dollars!!!!!!

@3hrice Жыл бұрын

So can you pee on it?

@kyle5555 Жыл бұрын

I believe that is in the manufacture’s recommendations.

@3hrice Жыл бұрын

@@kyle5555 good to know, I’m out for my walk now, I will pee on it and tell you how it went..

@chris76-01 11 ай бұрын

Yes, if you want to roast your weenie 😂 if you just pee on the cabinet, nothing will happen except for leaving a permanent stench to linger for the unfortunate lineman that has to service it😂

@3hrice 11 ай бұрын

@@chris76-01 I AM MA'AM NOW, I never knew just how must I wanted to be a woman.

@bigdurk7761 Жыл бұрын

That is insane

@ReggaeRedeemer 10 ай бұрын

i allways wonder do you have to be a electrical engineer to work on sub stations?

@Bobsdecline 8 ай бұрын

Not at all! Many trades (Lineman, Sub tech, Electrician, Relay tech, Civil workers) are all allowed to work in substations. Often times that depends on conditions, training, procedures or even accompaniment.

@ReggaeRedeemer 8 ай бұрын

@@Bobsdecline ohh wow thats cool. Thanks for allways replying man. might take you a month but i understand. you got thousands of people asking questions. Im in san diego and love watching your content. You got a dream job man. 🤟🏼

@Bobsdecline 8 ай бұрын

No problem Fred! I don't catch em all, but try my best! Lots of viewers have some great replies as well and often chime in, which is awesome!!

@cew995 6 ай бұрын

Actually engineers are not usually qualified linemen therefore most of their “ work” is eyeballing talking and thinking when they are in a substation.