What's a bayonet fuse !?
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- เผยแพร่เมื่อ 20 ต.ค. 2024
- The fuse link is on the high voltage side. It's very important to use a hot stick when removing them and remember, this will only isolate the secondary bushings! Don't forget that pressure relief valve!
Big thanks to dragonwear for the arc rated gear! 🔥🐲
#dragonwear #bobsdecline #lineman
You may have noticed my rusty wrench :(. Tills keep getting water in em! Might have a Milwaukee solution for that very soon... 🤫
i almost spit out my drink when you touched that connector inside the panel
the knipex plier wrenches are amazing, worth every penny. I can't go back to adjustable wrenches, so much fumbling.
You're a mind reader!
Time to get a stainless
I'm not sure how many regular electricians (and by regular I mean electricians that deal with 480 volts 3 phase or less in industrial, commercial, or residential settings) watch your videos but as a whole other leg of the trade it is always interesting to watch and learn how the other half of the trade does things. Thanks for spreading the knowledge.
Thats me. Mostly commercial and what I would call light industrial for 10 years but I'm fascinated by this.
These videos are fascinating. Hell, my lights wouldn't be on without linemen. Cool stuff!
It'd be worth repeating in the video that this transformer isn't installed, that's why you can demonstrate using your hands. Cheers!
The gas springs for the cover are mounted upside down. They have a small amount of oil in them that lubes the rod bushing and seal. For that reason they should be mounted rod side down whenever possible. When they are installed rod side up the rod seal will eventually run dry and fail prematurely.
Good instruction Bob.
I saw a video today on Facebook that showed these fuses but it was vague. Thank you for doing a video on this!!
Thanks for the video Aaron. Stay safe!
Nice vid - as time goes on the components seem to get simpler, better and easier to manipulate.
In Puerto Rico they had overhead porcelain bayonet fuses. The handle was porcelain and you had to push it in like a sword, by hand by the way. There was no way to hot stick them. The base literally looked like the handle from a sword. All 4kv system by the way. So yeah that was fun in your hooks having to send them in by hand
That sounds horrible! Lol
@@Bobsdecline you can google bayonet fused cutouts search images and you’ll see what I’m talking about
I just did, crazy! Never seen one of those
@@Bobsdecline I believe Detroit still has them on their system
Always educational!
we installed and livened up a 3 phase pad mount (brand new) and had a bad fuse/bad voltage. Shows how important the voltage check really is.
Aaron that’s brand new on a wood palette. Nice video! Thank you Miguel! Everyone deserves Miguel as a second set of hands on every job.
Your right! That wrench is rusty! I like that lid lifting on the front top of the transformer. Makes pulling those fuses easier! Ours don’t do that. They go with the low bid here.
When we first started getting these bayoneted style fuses in 3 phase pad mounts, they arrived without fuses.
Did you get to see “My Story in the IBEW Newsletter for the month of May 2024?
The lid certainly is nice!
I did see the article! Very well done and proud of ya John! I'm not sure if you saw my last e-mail
@@Bobsdecline No, I had not? I'll have to look in my spam folder then? I hope it's good news from you? You have been in my thoughts with everything on your plate.
Ever have to change the other fuse inside too? There's the bayonet and then a second fuse, PRCLF, in series for current limiting that is NOT as easy to get to. I see it listed on the dataplate on this transformer and shown as CL on the diagram. I have seen them looking in to a tank, but luckily never had to change one out.
We'll just swap the entire unit in that case
@@Bobsdecline I hear that!
1:44
The "drip pad" is a good idea.👍
I bet it took a lot of oil spills and a lot of time to finally get the engineers to agree on adding this simple feature ..
Very interesting videos!! I work for an energy company in KY/PA but am in the desktop support department so it is interesting to see what the lineman are out there keeping the power on.
I love it, big Al. 😅
Great vid! Thank you
Does the fuse itself fill with oil? When they blow, a lot of gas is released. In oil, not so much.
Great Training video
Golly 100A at 7200volt that's some power
720000 watts
Aaron just started watching your channel and love it, but why the name Bobsdecline?
GREAT VIDEO!!!!!!!!!!!!!
big Al helping you oooot
Why did you change the fuse if it wasn't bad? Thanks for the videos their educational.
Ohhhhh… Bayonet Fuse?!???
Never heard of it..But.. It sounds Interesting!!!!
Do those make a loud noise then they go? My husband and I were sitting outside watching a storm roll in a few days ago. The gust front hit and the fuse on the pole at the corner of our yard blew. We ducked inside rather quickly. Thanks for the interesting video. Please stay safe, and God bless.
I believe some fuses have explosive charges in them to ensure they open fully without arcing, someone may correct me if I'm wrong
@@JackieBright They don't have an explosive charge, but the fuse links that go in the cut-out "doors" (jacks, tube, fuse holder) are an expulsion type fuses and designed to blow out the arc down the tube by design. And yeah, they can be loud when the blow and what 99% of the people call hearing a transformer blow is really just the fuse blowing.
When a bayonet type inside a pad mount blows, I don't think you'd hear much.
@@inothome watched an episode of How It's Made on Discovery channel one night and the manufacturing of fuses was the feature. They explained that some fuses do have an explosive charge built in. Perhaps Aaron can clarify that part in a future video.
@@rupe53 I work in substations with the same fuses. Bayonets or fuse links do not have explosives in them. They are called expulsion fuses though. Since they extinguish the arc by forcing the arc down a tube aka expulsion and do sound like an explosion. But no explosives at all in them. If they did, there would be warnings, all sorts of regulations and training to go along with it. You wouldn't have 500 of them sitting in a bin on a truck or out in the open in a warehouse.
There are some fuses or breakers in HVDC for EV cars that do have a small pyrotechnic charge in them though.
Is the reason for those fuses to be on the low voltage side ( secondary ) , because the high voltage side protection ( cutout doors on the pole ) is not "sensitive" enough, to correctly protect the transformer, in case of overloading?
Or, are the cutout doors on pole are there to protect the wires, and not the transformer?
I'm an electrician, and 99% of times, we only fuse the primary, and use appropriate wire size gauge accordingly.
I worked in a hospital with 575 3 phase ( 600 volt ) transformers on our own property. Apparently they needed maintenance and we had 2 electricians on staff. Never got to see what they did. Do you service those and maybe you can make a video? Keep up the good work.
Most people wouldn’t know you can open a secondary side with the bayonet fuses on a radial feed circuit. If you had a bad URG instead of taking out a large amount of customers
You can isolate a single customer instead of everyone else on that circuit
I've seen it only a few times. It might be up to the company you work for. Would you not wear a type of face shield when working on those? 🤔
Quick question, so I assume those fuses can be removed under load as the oil quenches the arc?
Yessir!
@@Bobsdecline thank you for the reply and for all your videos!
Maybe a stupid question, but as an electrician, I'm curious about the reason you would pullout one of these fuses under load?
Usually, we only remove fuses because they blown.
Can you show us how to prepare a Burd transformer ?
What would cause these to blow? Too much draw on the secondary/customer side, or some other fault?
Why are those mushrooming tabs on one side only? Both ends of the fuse are secured by threaded plugs, surely if mushrooming tabs serve some purpose on one end, they would need to do the same at the other end too.
We call them cigarette fuses 👍
_Don't_ smoke 'em if you got 'em.
❤Miguel !
Frig miguel is handsome…
I'd like to see whats inside the oil tank once drained.
Probably the same as a dry type transformer.
But yeah, that would be interesting to see.
Interesting
👍👍👊‼️
Be careful when installing and removing the fuse holder. That oil can get very hot.
Dude, losing weight, congrats!!!!
😎
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Hey Aaron, do you have instagram or facebook?
Yessir! I try my best to keep up with Dm's on both platforms