Here in Part 25, the series pair of 20 ohm @ 300 watt CCS 'glitch
resistors' are finally installed, along with the FWB diode board
assy....and also the BUSS HVU-3, HV fuse. HV fuse installed in a pair
of silver plated fuse holders, that also have end retainers built into the
fuse holders. Once the fuse is inserted into the fuse holders, it does not
budge. It can't migrate out in either direction, due to the end stops. The
end stops also allow the HV fuse to be mounted vertically, or horizontally.
The 40 ohms of total glitch resistance LIMITS any fault current to a
'safe' value, while the HV fuse INTERRUPTS the fault current, and stupid
fast, like < 2 msecs. 6000 Vdc / 40 ohms = 150 amps of fault current.
150 amps of fault current will open off the fast, 3 amp rated BUSS HVU-3
fuse super fast...event over. The drawback to the 40 ohm glitch resistor,
of course, is the 120 vdc V drop across it, when 3 amps of DC plate
current flows through it. There is no fix for that.
https://www.youtube.com/watch?v=USQ3JqGfj7g
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