Transformer connections and load sharing
Transformer connections and load sharing
(OP)
We need a 30W,24v for a toilet device.We have a 240V supply in Qatar.But
our supplier who is in US has send us 2nos of RATING 120V/24V 50VA.
Is there any way by interconnections I can make it 240V/24v.
thanks in advance
Abraham
our supplier who is in US has send us 2nos of RATING 120V/24V 50VA.
Is there any way by interconnections I can make it 240V/24v.
thanks in advance
Abraham






RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Transformer connections and load sharing
Are you sure? What about amp-turn balance in the transformers? The unloaded transformer will behave as a reactor.
Bill's solution would work if the transformers are matched.
RE: Transformer connections and load sharing
Well...After reading your comment, I am not sure. That being the case, I withdraw my solution. Thanks for stepping in.
I do agree that Waross offers a good solution. With matching transformers and proper polarities, this should work well.
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
Amp turns balance says it all. Thanks Scotty.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Transformer connections and load sharing
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Transformer connections and load sharing
75va & 500va xmfrs, 240/460 pri->120v sec. Wire 120v across both H1-H3 (240v)(ignored H2&H4) pri in series, no load produced:
Vpri Xfmr NL sec comments
83 .......75va .... 43v....68 ohm....Rpri (I did not measure I or L or calculate Z)
38 .... 500va .... 19v.... 5 ohm ....Rpri (I did not measure I or L or calculate Z)
Put 60watt bulb across 75va xfmr for 15va load:
Vpri Xfmr NL sec comments
3 ......... 75va .... 0.5v
120 .... 500va .... 61v
Tied sec in parallel (phased properly):
Vpri Xfmr NL sec comments
60 ....... 75va .... 30v
60 .... 500va .... 30v
secondary recirculating current: 0.8ma
It also makes sense that I got the full 60v across the lite in series with the secondaries wired out of phase.
RE: Transformer connections and load sharing
Thanks for the feed back.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Transformer connections and load sharing
RE: Transformer connections and load sharing