Friday, December 14, 2007

480 volt 3-phase Arc Flash Demonstration

Duration: 00:29 minutes
Upload Time: 2006-11-06 09:44:59
User: Dain177
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Tags:

Arc  Flash  Demo  Volts  Amps  Explosion  

Description:

Here arcs were intentionally initiated by bridging wires across three copper bus bars in a testing laboratory. Three phase 480 volt power was then applied across the bus bars for about 1 second. The wires immediately explode, forming a conductive plasma which forms high current power arcs between phases. The actual fault current in the demonstration is not known, but is likely in the range of tens of kiloamps.

Comments

keybladex1337 ::: Favorites  2007-12-03 06:47:09

rofl, that ding at the end makes it sound like a oven or a microwave
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jonathanlaner ::: Favorites  2007-11-21 16:46:51

I've had something very much like this less than 12 inches from my face, Wich for reasons i can only put down to extreame luck didnt leave me with anything more than minor burns to my hands!!!. I nailed 3x315amp fuse's, Direct short across each phase, 415V system, I wont forget it anytime soon. Take this industry seriously. x
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m4St3rT ::: Favorites  2007-11-14 02:40:15

The Demonstration is realy interesting, but the *ding* + the comments made me loose it XD
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62609 ::: Favorites  2007-10-28 01:59:46

who wants dinner... yumyumyum
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threephase69 ::: Favorites  2007-10-24 19:50:04

Copper expands 40,000 times its volume when vaporized and is about 30,000 degrees F. I am installing arc flash warning stickers to all of the cabinets where I work to make everyone aware of the potential danger inside.
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MyLuckyCars ::: Favorites  2007-10-15 03:58:29

The electric is dangerous.
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reverenddevine ::: Favorites  2007-10-12 19:49:06

aside from not looking at any high volt arcs, ALWAYS wear eye protection(and any other protection you have)when working with electricity. Something I learned the hard way when I got a 277v arc 6 inches from my face caused by a backfeed through a neutral even though the circuit was supposedly "locked out". My ass is still puckered
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simonspaz ::: Favorites  2007-10-10 17:30:08

copper burns green :D
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Amiduffer ::: Favorites  2007-10-07 18:49:55

ha ha!
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Felamine ::: Favorites  2007-09-30 11:05:13

*ding!* Ooh, the turkey is done!
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nightfire620 ::: Favorites  2007-09-24 17:07:41

Dinners ready!
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LyncusBee ::: Favorites  2007-09-24 08:14:31

I used to work for the National Grid in the UK; they had a safety video that had a 3 phase supply medium voltage 600V supply connected across short circuits (where the HRC fuses should be and timed to cut after 1.5 cycles (30mS second at 50Hz)The entire steel cabinet exploded they were filming using high speed cameras at a distance of at least 100+ feet away! The reason for this violent demonstration? Don't use metal spanners in live MV cabinets!!
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scarecrow7771w ::: Favorites  2007-09-13 16:23:06

Hmmm...New prototype oven, much faster than a microwave, at 35,000 degrees, this sucker will cook a frozen turkey in seconds:-D Still having issues with the burnt copper taste, and the required 3-phase service, and huge, expensive transformer:-P
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SpiritsoftheWolf ::: Favorites  2007-09-04 20:39:10

hey honey..... i fixed the microwave.........BBBBZZZZTTTTTT... ahh shit.... interested in going out for chinese dinner??
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Birdieupon ::: Favorites  2007-08-31 19:11:21

what causes the greeny blue lights?
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