Post by c64 on Jan 14, 2013 21:24:37 GMT
my breaker panels are rated for 100,000 AIC (Amps Interrupting Capacity) our average residential transformer is a 50KVA transformer. it will generally carry as many homes as you can reach within reasonable secondary runs.
And how many milliseconds does it take to disconnect the power in case of a short circuit?
The cabinet in the video (advertising the special protectors) which blew up was also certified for several hundred kA! It just takes too long. There is a graphics where you can see the green sine wave of the power, the red line is temperature and the yellow one is pressure. As you can see in the graphic, the power is disconnected AFTER the shockwave of the explosion. The device disconnects and shorts out the power within 4ms, long before the explosion occurs. Ordinary fuse and breaker systems are simply way too slow to prevent blowing up things.