Overhead line connection work
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- Опубліковано 17 жов 2024
- Connection work with overhead lines had been done via methods of live line work for over an decade.
Live line work: customer friendly - efficient - cost-effective
This video was made in cooperation with the following organizations:
Järvi-Suomen Energia
E. On (current Loiste Oy)
Pohjois-Karjalan Sähkö
Ensto
STEK ry
Savon Voima Oyj
Elenia Oy
Enerke Oy
Sähkötutkimuspooli
JT-Milleniumin (current HeadPower Oy)
Eltel Networks Oy
Turku Energia
There is an 'electricity links' video on here somewhere from 1973. They were live line working then.
Can you please say me that why the lines are being fixed to a wood plank
That's called a cross arm. It's just what you do and has been done for over a 100 years that way. It's how they spread the wires out for 3 phase. You could run vertical 3 phase on a pole without a cross arm but it takes up too much space on a distribution pole. You'ld need like 60 foot poles instead of 45'.
down in kentucky bobby-joe just ties an aluminum extension ladder to the pole and taps in
Oh I didn’t realise it was ok to run a ground across all phases on a live line. I’ll try that next time.
You do it while working on transformers to protect the crew if the current applied before work is complete and to protect against current from the wrong side.
Or in this case, to protect themself from something on the other end of the secondary line which suddenly starts generating electricity.
For example someone with an diesel generator there it and the kit it was intended to provide power to isn't correctly isolated from the net.
You don’t understand this enough to be trying that
Good work electricity⚡ lianman
I'm very surprised they are not wearing safety glasses. Safety should be first and foremost, yes?
What voltage was the line we see in the video? Where was the demonstration located?
Very interesting demo. Thanks for sharing.
Hey +wingsley , thank you for your questions. The voltage is 20 kV (the medium-voltage network is usually 20 kV in Finland). The video was shot in Siilinjärvi and training field owned by Savo Vocational and Adult Education Centre (www.sakky.fi).
Thanks! It's been ages since I've seen glass insulators in use. That caught my eye.
That was awesome
mostly in france they still use them uk are all composite pretty much now glass exist but new lines are all composite
Hello i am also a lineman from austria. I have new videos on my chanal about my work, please come over.
I made a video for you showing how its done here in the usa - utility pole triplex cable how its installed in u.s.a. feeding homes and stores
So tell me if I have got this wrong, he makes a connection to the top main line with the t off line still bonded together ? why?Surely you would take off the bridged out jumpers on the lower t off before you would make a connection to the hot main line above, does not make senses! and because the bottom t off has been bridged out once it was made hot , those other tails which are ready to be connected are also hot just swinging in the breeze under no control what so ever
Nokah , they do now, the video has been edited from original , on the original video they take the jumper off the link stick to connect to the main line and the earth bonds were still across all three phases ! Obviously a mistake when filming , I know what I saw, I am a Glover, Linesman and Auditor, it’s my job to spot shit like that
The European Electrical Safety Standard defines all non-earthed parts exposed to voltage. Therefore, the branch to be connected must be grounded if you want to work near it. In this case, a shorter rod can be used. When the jumpers are lifted onto the auxiliary brackets to the main line, the worker moves to work lower in the column and removes the grounding of the branch wire. Therefore, the extending rods are used. The cross-sectional area of the jumper is 95 square millimeters, so it is rigid. It has been found that, for example, a 50-square millimeters jumper breaks for some time to come under the influence of wind, especially on roads with semi. AND... The video is for advertising purposes only.
Электрики берегите себя!!
Higher quality electricity?
Availability, basically which in this case means either plan to supply the customers by alternative lines or as in this case doing more work with live lines.
IN this case, if necessary they would have cut the power to the top feeding line and so losing power to dependent customers - that is no availability.
Nice work but why they have helmets with face shield and they don't use it
In fact, the helmet does not have a face shield but an eye protector (standard EN 166). When working with a safe distance method, the entire face shield is not needed in this work. Usually darkened eye protectors are used to protect against sun and debris.
How overhead lines are connected to underground cables for transmitting power?
The underground cable is brought to a surge arrester rack ( e.g. www.ensto.com/products/overhead-line-networks/medium-voltage-overhead-line-solutions/ensto-bare-conductors/crossarms/SH536/ )on the pole. At the end of the surge arrester ( e.g. www.ensto.com/products/overhead-line-networks/medium-voltage-overhead-line-solutions/ensto-covered-conductors/surge-arresters/he-s27sga/ ), a underground cable and a "jumper" wire are connected at under same bolt. The end of the jumper has a live line connector ( e.g. www.ensto.com/products/overhead-line-networks/medium-voltage-overhead-line-solutions/ensto-covered-conductors/live-line-and-earthing-connectors/SL30/ ). The accessories are slightly different depending on type of wires ( coated or bare conductors).
Wooden electric pole?
Thanks for uploading this video.
Using hot sticks with gloves on, no way, how are you supposed to feel if the stick starts breaking down?
It's highly unlikely at 20kV.
The rods/stick must be serviced and measured according to the manufacturer's instructions. If the installers get a feeling of electricity, the rod/stick manufacturer's instructions are violated. In this case, Finnish labor safety legislation has also been violated.
Wow, kudos to those guys!!! By the way, I also liked the song in the backgrond. Does anyone know its name, please??
Good article
This isn't a live line video , this is showing line workers applying phase shorting earths to an Isolated line !
This video is made for the marketing of live line working methods for company managers in Finland and translated afterwards in English. Those who know about the working method have nothing new in the video, but the purpose of the video is to tell people about this method.
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Ade mana side ala jumper kalapalante,without safety and without protection
I can tell you right now that with the gloves these guys were wearing, these lines in the video weren’t live lol
kinda common to use theese kinds of gloves doing live work (pole method). using those thick shoulderlong gloves is an american thing.
Thanks
Buen trabajo !!
21 век на дворе, а они все еще деревянные столбы используют.
Бетон кстати дешевле чем дерево!!!
Tecnología de punta y capacitación de primer nivel ,,CFE aprende a invertir y capacitar al personal ya deja de capacitarlos para robar a los usuarios,
great work
SAMIR ROY SAMIR ROY
Good job
शेखपुरा जिला में पानी की कमी के कारण बिजली भी कमी है खेत में बिजली नहीं मिलता है तस्फरमार बोल कर भी कभी
Thank you sir
Nice working
Hello sir ji video my like
Nice
That is circuit main earth installation
Still wooden poles 😟😵😵
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Sir ji namskar ji
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Hello sir ji namskar
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Ces très important
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