| ??? 10/28/04 15:19 Read: times |
#79941 - RE: 415V ac and 24V dc Responding to: ???'s previous message |
Kai Klaas wrote: ------------------------------- Erik said:
According to the datasheet it can handle 440 A for short periods. Ok, but turn-on time of your crowbar is about 1µsec, while the transzorb turns on in about 1nsec! Kai Hang on a minute - or 60E9 nsec.... Further assume that you use a super-fast acting 700VAC fuse (200kA max blow current) from 'SIBA'. Datasheets can be found here:
http://www.siba.de/pdfdokume...rungen.pdf Then you will find, that transzorb needs to shunt short circuit current for about 4msec. So your fuse takes 4000,000 times longer than the transorb to blow, as opposed to 4000 times longer than Erik's method...... |
| Topic | Author | Date |
| 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| Disaster management | 01/01/70 00:00 | |
| RE: Disaster management | 01/01/70 00:00 | |
| RE: Disaster management | 01/01/70 00:00 | |
RE: Disaster management | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 | |
| RE: 415V ac and 24V dc | 01/01/70 00:00 |