Brush 12500 kVA transformator 

Superb video, well filmed, well enjoyed thank you

I was wondering how the on-load change took place without dropping out between taps, the resistor coil answers the question. Excellent vid, not something many people get to see.

If that one is a UK made Brush I live about an hour away from their factory, agree with comments a thing of great beauty, words are not enough. Thanks for the video.

What a monster! There's some beautiful engineering and construction gone into that! It's a piece of art, thanks for showing us & have a safe journey my friend.

made in loughborough uk. massive place, did their cctv and access control systems. walking through the factory and the transformers being craned above your head is a bit crazy.

Hopefully going back into service soon. The 500kVA one in the street that supplies my house was replaced Saturday because it popped an oil seal on the lower drain. Made in 1996 and hopefully fixed and put back in use soon.

That is one BIG tapchanger, woah :D Really cool to see one of these on the inside, superb video! Ik subscribe nu maar :D

Wow' feel very privileged to have seen this.Quite interesting and a testament to good electrical power conveyance engineering.Thanks

If that fiberboard is available, cheaper to repair as long as the fault was corrected that caused the over pressurization. Art like this should be preserved!

i literally spend the whole video saying thats amazing :P

Thanks for this, great to get the opportunity to see inside... We recently installed a 33/11kV 15MVA 1960's refurbished Brush transformer on a private network for a client.. Think it may have been from a foundry originally. I had a go on the manual tap changer as we had to go up about 4 taps (offline, and under supervision of our SAP) and operation was as sweet as a nut. Even the handle had a touch of quality about it! Our local network operator was a little concerned about energising it as it was missing some of the FAT information they required for inrush studies so a few best guess approximations had been made by the supplier. Was a new fairly long teed connection to a pretty weedy bit of network so they had power quality measuring kit connected while they switched it on. We had been warned that if it was to cause too much of a dip in supply, then it might not be going on again! Although the tech could not tell us on the day as he needed to interrogate the recorder properly in the office, I have not heard back of any problems. The conservator on ours is incorporated into a sleek housing on the top with a little fixed ladder to access the Buchholz and WTI cable marshalling box which is also built into this housing. The whole thing looks very 50's/60's styling and pretty space age!

The craftsmanship on these transformers is impressive. Those spikes could be there to help dissipate charges the buildup on the core.

Beautifully made, very nice transformer

It appears the 33kv windings are made of 84 groups of 20 turns = 1680 turns in total per leg assuming max input voltage 34.65KV on tap 1 Gives 20.62Volts/per turn, legs are about 35cm in diameter 961cm2 core area, running at about 1 tesla, using CRGOS at 0.5mm lamination's.

Look at all that copper!

wow it would be nice to fine of those just for the copper to use for off grid bus bars this is a nice video thanks for sharing. was this set up for frequency matching. IE two different grid's connected with a matching transformer to match lets say a 50hz from one power plant and maybe 52 hz from another. I love to see a system with a matching transformer if this is not it. thanks for the great video.

In the video with the faulty pole mounted transformer I think you said the replacement would be £100k+ How much to replace this one?

Transformers, transistors, resistors and cap's, watch out for the arcs, there shocking traps!

Brush! Now there is a very famous name in British engineering history!

thanks for showing the vid, i know im a little late on this one, but that is a beautiful well built transformer.:)

hi rodalco i was wondering what is your line of work?

thanks

monster transformer, good video

How often do wildlife interrupt service on these kinds of things? And if worst comes to them, what kinds of places do they end up?

If they discard it, are you allowed to keep parts? Nice transformer, too bad the system got damaged. I would really like to see you connect the motor-unit to the switches and take a full round or two.

very nice piece of engineering.

What finally happened to it? Scrapped? or Refurbished? (I hope)

love this video. it was great

What a monster!!!

What's that toroidal thing at 4:55?

that is a beauty. Too bad it had the tapchanger fail. Also too bad you couldn't get it for yourself to do some experiments on, but like you said, you'd need a big supply for it. I wonder how much in metal recycling they'd get for scrapping it? I'd like to start experimenting for myself but am just a little leary of messing with HV. Safety first!!

Here's a vid' I found Ray, You might find interesting: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-a9zdz780l-U.html Hope you like Clive

quality

NOW this I like even the spiky bits did I see that was made in 1988 ?

And I always thought my 5 kVA transformer was big

how is it possible this thing was not contaminated with PCB?

Where is the "beech wood relay"? (an often made mistake in the name of this device, from a literal translation of the German name Buchholz).

Who would have thought I would ever find such beautiful content on youtube . Thank you

Is that a current transformer at 4:55?

Wow, thanks for sharing!! The TAP Changer had 5 positions? im a little dizzy trinying to figure out the amount of conductors (looks like 3 conductors in parallel for TAP position)

What was ultimately done with this TX?

Nice video, thanks for posting! Just wondering....it looks so clean....how did you get all the oil off after removing it from the tank?

Transformator, mooi gesproken !!

Awesome workmanship, beautiful symmetry.

you deal with mostly three phase stuff and keep the obsolete old whirlygig number countin plate KWH meters?....a month or so back a new company in my city changed the kwh meter on my house...its a Digital lookin Sensus Icon...numbers displayed like a clock calculator kinda setup.

Bet you wish you had this one for electrical experiments!! This is like the ones made where I worked for G.E.C.

Hope it can be fixed, if not, it goes to the scrap and a marvel is lost! :( SAFE TRIP!

you took the words right out of my mouth, a work of art, it truely is. mooie video weer eens, top!

Are those coils insulated or do they float in the oil w/o insulating coating?

i hear buzzing humming

awesome vid!!

Buzzin' :D

Amazing!

Das ist wahre Kunst.

why is it called transformATOR?

Was it scrapped or repaired in the end?