Trace Xantrex SW4024 AC board installation

Re: Trace Xantrex SW4024 AC board installation

Great picture. Even with a lot of imagination it doesn't look like AC board.

It might be a later model redesign that used a lot of the same parts used in the SWplus inverter.

The three yellow blobs look like voltage sense transformers. The two grey blobs at top on other side of board look like the two power relays.

Anyway, here is schematic of AC board on SW inverter. If you get the two thick wires from the power transformers backwards it will drive the inverter to phase lock limit with ACin and will quckly kick off with overcurrent alarm when it tries to engage.

Re: Trace Xantrex SW4024 AC board installation

Don't know of wires to FET board. Large diameter white and blue wires are high current low voltage lines on FET board. Are you sure they have not come loose from one of the transformers primary side bundles?

On AC power board, there are two large black wires that go to 35 amp circuit breaker on side of unit and four small wires, grey, orange, orange, grey that go to the two 4" muffin fans. Large white and black wires to screw terminal strip go to transformer secondary stack and ribbon cable to top control board. That's it.

Re: Trace Xantrex SW4024 AC board installation

tnt2301
you are in luck I am working on a SW4024 on my bench right now.

Wiring of terminal block;
Note, the view is from the inverter sitting on then bench long ways, from the DC input terminals being closest to the viewer and the AC connections being at the opposite end.

-Top left ( transformer side of block ) two wires in this terminal, a yellow wire coming from the far side of the transformer that is the closest to the terminal block.
Also a blue wire coming from the FET board just below the terminal block.
It is sitting in a row with a red and white wire on the FET board.

-Bottom left, two wires in this terminal, a yellow one comes from the same transformer as the previous connection does but comes from the side of the transformer closest to the block.
The other wire, a white one, comes from the power FET board just below the terminal block. It sits between a blue and a red wire on the FET board.

-Top right, a single wire in this terminal. A blue wire coming from the right side of the FET board.

-Bottom right, a single wire in this terminal. It is white and comes from the right side of the FET board.

Hope this helps. I came here looking for a schematic for the transfer relay circuit and found that here also. Great forum. Thanks.