Maker Pro
Maker Pro

fuses not doing their job

dave9

Mar 5, 2017
1,188
Joined
Mar 5, 2017
Messages
1,188
I don't agree that fast acting fuses will not protect surges.
Years ago with the popularity of 3ph SCR bridge circuit to drive large spindle and servo motors, these were used across the line and all had rectifier (ultra-fast) fuses, in the event of electrical storms,line surges etc, it was common for one of these fuses to blow, saving what often was 50amp, 100 amp drives.'
M.
But how often is reasonable to replace the fuse? It can be more of a problem if the occurrence rate and/or surge level is large. The driver you're referring to might also be made more robust than a little 3A cheapest-source-possible switcher for a gate.

It seems more anecdotal than dependable compared to a purpose-made surge protection circuit.
 
Top