Ross is correct, ~1kV Vmp, 1.4kV Voc... around 9A Imp as I recall per string. So yeah if something breaks loose, even assuming the string fuse opens and isolates it from the rest in the combiner, there's still a lot of angry electrons wanting to go somewhere depending on how what went wrong lol
The currents at that voltage are what stand out at me... not so much a single string but when you "see the math done" on things like labels and there's obviously no mistake by the size of the cables, it's... ahem... enlightening... to say the least. Not that anyone can't or otherwise wouldn't do some subconscious math... it doesn't really hit home just how much power flows thru what you're seeing until you put the labels next to the wiring... lol it "changes everything"
I had a moment the other day where I just happened to gaze down at a single cell in a panel and the printed collection conductors got my attention... they're tiny as anyone that's seen them knows... but then I started to run away with the idea of how many bazillions of these little dinky "wires" does it take to collectively pump well over 3000A [not a typo] into an inverter (at the 1kV mind you lol)...
I stopped right there before my head exploded