3 ms·
Like one metal blade that is placed in between the wires (current flows) and slid up to an insulating part (current does not flow) ?
by pmontra 3y ago
Like one metal blade that is placed in between the wires (current flows) and slid up to an insulating part (current does not flow) ?
- _trampeltier 3y agoThats not that easy. As soon the two metals are seperated, there will be an arc. The arc is really, really hot and will burn everything and also as soont there is an arc, the arc stays can bee so much much longer in discance than just air. Since there is 0 in DC, large DC-switches are much more difficult to build. There are several options from SF6 (today no), to vacum or blowing magnets (blow the arc to cooling cambers).
- atoav 3y agoI am pretty sure if it was that simple it would have been done that way already. Breaking high currents is something we had to do for more than a hundred years. Arc flashes are no joke. We are talking about 2800 to 19000 degrees Celsius here. I don't know about your insulator but it has to survive a multiple of the surface temperature of the sun. And ideally it withstands that more than once or twice.