just heard a story regarding a person who got badly injured because of a type short circuit like this. What happend? he wanted to check the type of current transformers wich are mounted on a 600 A 3 phase busbar with the manufactors plate backwards.
it was not readable. In a efford to disassemble the CT's they failed to switch off the power....severe burns on face, hands and wrists
makes sence, if i had seen the wires i would have thought of a short circuit, i was thinking it was a bomb inside the box. But it is still not funny, i have had 127V short circuits and felt the little liquid particles of copper burning tiny spots on my shorts arms and it sucks. You guys in europe take a big risk on the "low" voltage domestic appliences...
this must be a test with a very high short circuit power of the supplying network. At a wall outlet, the short circuit current is limited by the electricity network's impedance and you will of course never see this much happen, when you short a wall outlet.
The short circuit current is not only limited by the impedance but hopefully also by the fuses installed almost immediately after the incoming cable from the grid.
Besides: this was a test with inadequate safety measures, therefore the big bang...
Well, not necessarily inadequate protection. High-current 3-phase power such as used in industry has enough power to do something like this without popping any breakers or fuses. Even if the breaker trips, the damage will already have been done.
Arc flash is a very real danger. That is why electricians who work with this kind of stuff need to take safety precautions and be very careful with their work when working around live equipment.
but, when would such a 3fase short occur in a live situation? with my limited knowledge (wikipedia =)) I found that you would have to connect 3 wires together for such a short. what situations allow for this in daily indstrial use?
You don't have to short all 3 phases together. Just 2 of them and the results would be almost just as catastrophic.
In general industrial 3-phase is considered more hazardous that residential single-phase because of the higher currents typically involved, and in some cases such as in the video much higher voltages (400V).
@ 3v45b5: industrial installations mostly dsitribute very high currents: a 3 phase 320 Amps installation is not an exception, and it goes up to 1600 Amps if I remember it right: behind those currents, a company has it's own high-voltage room, where a transformer is fed directly with 10000 Volts or so, and converts it to 400 Volt.
@atomhorst I think when you short circuit your home 3 phase power outlet that there will be enough power to recreate this kind of explosion. You've got at least 16 amps (some even 25) per phase, so that ends up in roughly 50 amps at 400 volts (just to sketch the situation, not going into all the maths about calculating ac power). It totally depends on how you short circuit it, how your fireball will look like. Just wire to wire will only be a loud bang, an oil cooled transformer will do more.
werk er alle dagen aan, maar zo leer je dat je respect moet tonen voor die dingen
timrobion 8 months ago
zo'n grote vuurbal jongûh!!! BAM!!!!!
vlietwijker 9 months ago
just heard a story regarding a person who got badly injured because of a type short circuit like this. What happend? he wanted to check the type of current transformers wich are mounted on a 600 A 3 phase busbar with the manufactors plate backwards.
it was not readable. In a efford to disassemble the CT's they failed to switch off the power....severe burns on face, hands and wrists
1967ball 11 months ago
well i had my examen today and my panel did the same thing xD 0/50 sometimes stress is realyyy bad !! =D
imigo100 1 year ago
Doors to cabinets are NOT supposed get blown open. High current electric boxes are SUPPOSED TO be properly vented.
BenHutchinson1 1 year ago
wacht ik los het wel even op BAMMMMM!
LAHVideos1 1 year ago
Zon grote vuurbal jonge BAM! :o
Als dit in het echt was gebeurd dan hadden we een boel slachtoffers.
aeg12p 1 year ago
lkkr fraai
fireworkfreak100 1 year ago
kaboeeem
brammeken14 2 years ago
2 days after sept 11.
avenged06x 2 years ago
AWSOME
Scitech101 2 years ago
je zal er maar net voor staan met je rittal sleuteltje
thaplayah1 2 years ago 12
Godskenonne. Wat een knal.
BarneySaysHi 3 years ago 4
the electrical cabinte is not designed to
contain any electrical failure but to only
prevent it (as much as possible)
aizeemifridgerunnnin 3 years ago
ok, what was that, why did it explode and why was it funny?
Arkthurius 4 years ago
This is a short circuit explosion in a
Europe 400 VAC three phase terminal box.
That means when you are close to the box when this explosion occur you will be sprayed with a few thousands fahrenheit of vapoured copper.
so that your face will be BBQed.
1967ball 4 years ago
makes sence, if i had seen the wires i would have thought of a short circuit, i was thinking it was a bomb inside the box. But it is still not funny, i have had 127V short circuits and felt the little liquid particles of copper burning tiny spots on my shorts arms and it sucks. You guys in europe take a big risk on the "low" voltage domestic appliences...
Arkthurius 4 years ago
this must be a test with a very high short circuit power of the supplying network. At a wall outlet, the short circuit current is limited by the electricity network's impedance and you will of course never see this much happen, when you short a wall outlet.
atomhorst 4 years ago
The short circuit current is not only limited by the impedance but hopefully also by the fuses installed almost immediately after the incoming cable from the grid.
Besides: this was a test with inadequate safety measures, therefore the big bang...
weeardguy 3 years ago
Well, not necessarily inadequate protection. High-current 3-phase power such as used in industry has enough power to do something like this without popping any breakers or fuses. Even if the breaker trips, the damage will already have been done.
Arc flash is a very real danger. That is why electricians who work with this kind of stuff need to take safety precautions and be very careful with their work when working around live equipment.
mysterymeatgrinder 3 years ago
but, when would such a 3fase short occur in a live situation? with my limited knowledge (wikipedia =)) I found that you would have to connect 3 wires together for such a short. what situations allow for this in daily indstrial use?
3v45b5 3 years ago
You don't have to short all 3 phases together. Just 2 of them and the results would be almost just as catastrophic.
In general industrial 3-phase is considered more hazardous that residential single-phase because of the higher currents typically involved, and in some cases such as in the video much higher voltages (400V).
TehMG 3 years ago
@ 3v45b5: industrial installations mostly dsitribute very high currents: a 3 phase 320 Amps installation is not an exception, and it goes up to 1600 Amps if I remember it right: behind those currents, a company has it's own high-voltage room, where a transformer is fed directly with 10000 Volts or so, and converts it to 400 Volt.
weeardguy 2 years ago
@atomhorst I think when you short circuit your home 3 phase power outlet that there will be enough power to recreate this kind of explosion. You've got at least 16 amps (some even 25) per phase, so that ends up in roughly 50 amps at 400 volts (just to sketch the situation, not going into all the maths about calculating ac power). It totally depends on how you short circuit it, how your fireball will look like. Just wire to wire will only be a loud bang, an oil cooled transformer will do more.
Engineer9736 4 months ago
lol
awieles 4 years ago