dc voltage from 3 phase ac
dc voltage from 3 phase ac
(OP)
our last building had a breakin and the thieves stole a transformer that powers a dc crane.the rectifier is just six power diodes( no capacitors)producing 250v dc (somewhat choppy). our electrician tried feeding 240ac to the bridge but got too much voltage dc.How do we figure out what ac 3 phase voltage we need to put into the diodes to get 250 dc volts out put?






RE: dc voltage from 3 phase ac
RE: dc voltage from 3 phase ac
But a DC crane ? That's a new one to me.
RE: dc voltage from 3 phase ac
Steve
RE: dc voltage from 3 phase ac
If I may, the Vdc to Vac ratio is 1.3 not 1.414. Just today tested a rotating 3 phase bride rectifier pack today confirming that.
RE: dc voltage from 3 phase ac
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: dc voltage from 3 phase ac
RE: dc voltage from 3 phase ac
In 3 phase bridge rectifer, the ac line current is about 75% of DC load current, if I remember right.