Edcor (O)PT vs tubelab's color codes?

[Divad89]

I've just received my Edcor transformers (XPWR059 and CXSE25-4-5K), and would just know whether the color codes tubelab uses are the same as the color codes Edcor uses, because there are some of them which is different...


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David

[rknize]

You have to look at the label they give you. George's colors apply to Allied/Hammond which tend to follow some of the old conventions. Edcor does too, but not so much for the power transformers.

You should be able to figure it out from the label. If not, post pictures of the labels and we can help you map out the terminals.

[fandersen]

On the CXSE25s the red & blue are the same as on Tubelab wiring diagrams. Yellow is positive, white is negative.

I used the XPWR035 which is slightly different than your 059. However the colour scheme looks the same. So the differences are:
Edcor Black/Red = Tubelab Red-Yellow
Edcor Brown = Tubelab Green

You don't use the center taps for the yellow (white/yellow) or the brown (white/brown). Likewise you won't need the Grey wires.

[Divad89]

Thanks that helped a lot, think I can do it now...

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David

[Divad89]

After studying tubelab's description and Edcor's shouldn't it be this way:

Tubelab = Edcor

Yellow (5v rectifier filament winding) = Brown (2.5v x 2)
Red (high voltage AC) = Red (375v)
Red/yellow (center tap for high voltage winding) = Black/red (C.T)
Green (6.3v filament) = Yellow (3.15v x 2)

You can see the specification for the transformers here:

http://www.edcorusa.com/Images/Products/SCM/XPWR059.png
http://www.edcorusa.com/Images/Products/SCM/CXSE-4.png

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David

[fandersen]

Originally Posted by Divad89

After studying tubelab's description and Edcor's shouldn't it be this way:

Tubelab = Edcor

Yellow (5v rectifier filament winding) = Brown (2.5v x 2)
Red (high voltage AC) = Red (375v)
Red/yellow (center tap for high voltage winding) = Black/red (C.T)
Green (6.3v filament) = Yellow (3.15v x 2)

YES! My bad I assumed that Edcor would use the yellow and brown wires for the same thing across transformers. On the XPWR035 the Brown are for 6.3v and the yellow are for 5v. The reverse of your XPWR059

[Divad89]

Yeah can't understand why Edcor doesn't use the same color codes with all their transformers.
Btw how do I connect the PT to my power receptacle (live in Denmark=240v), I have a type K outlet (no polarity), on the specification for the XPWR059 there is:

Black/white+green
Black (input voltage)
Green/white (common)

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David

[rknize]

As I mention earlier, Edcor is a little inconsistent on their power transformers. If you could post a pic of the label, we could make sure that you hook it up right.

[fandersen]

Originally Posted by rknize

As I mention earlier, Edcor is a little inconsistent on their power transformers. If you could post a pic of the label, we could make sure that you hook it up right.

See post #5

[rknize]

Sorry, missed that. You want to connect the black/white wire to the green wire and insulate the connection. Connect your mains to black and to the green/white wire. Polarity doesn't matter.