A bit embarrassed to admit it but I don't know what terminals on this old xfmr mean with regard to primary (input), secondary (output) and what (how) to connect line and load sources to those appropriate terminals. Hope I'm in the right thread for answers to my question.
From what I've been able to find on the internet this transformer was made by or for Reliance Electric long ago...probably WW2 era. While I'm used to a xfmr primary (input) connection wiring being on one side and the secondary (load) wiring on the other, this transformer does not have wires as such, but terminals firmly embedded on both sides.
Those terminals are labeled H1 thru H6 (both sides of body winding) and X1, X2 also on both sides of the body winding. There is a plate on top with 4 wire strapping schemes designated 207-227, 228-252, 414-454, and 456-504. That plate with "H" letters also has L1 and L2 letters at certain H letters points. I am assuming the wiring strap schemes indicate which H terminals to strap appropriate for the line source. So for example if I wanted to connect the primary to a line source of 220VAC I would use the strap scheme of 207-227 indicated on the top plate and connect 220VAC 2 input wires to each one of the 2 terminal straps for that range.
As for the load (output) winding I am assuming terminals X1 and X2 (marked on the winding body but NOT on the top plate. So if I wanted to connect my load I would connect it to X1 and X2 marked terminals. As for the load voltage (which is not indicated anywhere) I can always meter that with an appropriate resistance connected across X1 and X2. I'm actually looking for 24 step down volts but of course don't yet know if this xfmr secondary winding actually is 24 VAC.
I would be happy to attach a photo of all xfmr views if that could helpful for ID. Thanks for any help.
From what I've been able to find on the internet this transformer was made by or for Reliance Electric long ago...probably WW2 era. While I'm used to a xfmr primary (input) connection wiring being on one side and the secondary (load) wiring on the other, this transformer does not have wires as such, but terminals firmly embedded on both sides.
Those terminals are labeled H1 thru H6 (both sides of body winding) and X1, X2 also on both sides of the body winding. There is a plate on top with 4 wire strapping schemes designated 207-227, 228-252, 414-454, and 456-504. That plate with "H" letters also has L1 and L2 letters at certain H letters points. I am assuming the wiring strap schemes indicate which H terminals to strap appropriate for the line source. So for example if I wanted to connect the primary to a line source of 220VAC I would use the strap scheme of 207-227 indicated on the top plate and connect 220VAC 2 input wires to each one of the 2 terminal straps for that range.
As for the load (output) winding I am assuming terminals X1 and X2 (marked on the winding body but NOT on the top plate. So if I wanted to connect my load I would connect it to X1 and X2 marked terminals. As for the load voltage (which is not indicated anywhere) I can always meter that with an appropriate resistance connected across X1 and X2. I'm actually looking for 24 step down volts but of course don't yet know if this xfmr secondary winding actually is 24 VAC.
I would be happy to attach a photo of all xfmr views if that could helpful for ID. Thanks for any help.
