News You Can Use: What Happens When a 63 Amp, 36000 Volt Fuse Blows?

Last year, a solar power farm in the United Kingdom had a really bad day and blew one of the main fuses on its three-phase AC output feed.  (If you work it out, this phase had a maximum power of 2.25 megawatts.)  An engineer sent the blown fuse to Big Clive, who proceeds in the following video to find out what’s inside with the cheap-o X-ray device, how it works, and what the aftermath of  a blown fuse event looks like.  Cameo appearance by an ever-helpful cat.

The fuse is rated to break a short-circuit current of 40,000 amperes.  The 36 kV rating is between phases, with 20 kV above ground.

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