Viesturs trešd., 2024. g. 7. aug., plkst. 15:35 — lietotājs gene heskett (<ghesk...@shentel.net>) rakstīja: > > T=RC will give an answer for (IIRC) a 67% charge. Where T is time in > seconds, R is ohms and C is farads. 5T will give essentially a full > charge time. Its the low R from the powerline that is clearing your > fuse/breaker. :o) >
Thank you Gene for detailed explanation, I appreciate it! Ok, let it be a permanently connected resistor with a relay that bypasses resistor when capacitor is charged. I think that this should do the trick: https://www.tme.eu/lv/en/details/ahp100w-47rj/power-resistors/sr-passives/ Now what about the relay? That page has SSR relays for 400V DC but they are above 100 EUR. Is it ok to use "normal" relay as the switching is expected without the load? I am slightly puzzled that some relays/contactors are rated for 600V AC or 28V DC. For discharge I think this should do (1KOhm would be 0.34A at 340V and that is 115W): https://www.tme.eu/lv/en/details/hs200-1kf/power-resistors/arcol/hs200-1k-f/ The same question about relay applies here as well. Viesturs Viesturs _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
