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Strange specs for a toroidal transformer(?)

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x86guru:
Hi All,

So this toroidal transformer is almost 6 inches in diameter, and around 2.5 inches in height.

The primary side only has one 120VAC winding and is rated at 103VA

The secondary side has two 55VAC windings @ 490VA each.

I've attached a picture of the label and the size of this thing.

What is going on here? Does the "103VA" primary side rating really mean that the primary side winding can only handle 850mA while the secondary windings can handle 8.9 amps each?

I assume the "103VA" is either an error (maybe should be 1030VA?)

I don't know the actual gauge of the windings; however, the wires coming out of the toroid are all ~16ga so I'm puzzled what is up with the 103VA primary side notation.

Can anyone clear this up?

 

Benta:
~100 VA looks about right for the physical size of the transformer.
I suspect a typo. Secondaty should probaly read 90 VA, not 490.

x86guru:

--- Quote from: Benta on March 19, 2024, 08:38:16 pm ---~100 VA looks about right for the physical size of the transformer.
I suspect a typo. Secondaty should probaly read 90 VA, not 490.

--- End quote ---

 :-DD
 :horse:

BrokenYugo:
Size lines up with whatever Hammond 1kVA toroid google found me.

Ohm it out? If I'm thinking right with it being near 1:1 it should have a near 1:1 turns ratio with near 1:1 resistance if wound with the same gauge wire.

johansen:
Yeah thats easilly a 1kva tx

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