accidentally shorted secondaries for 2 seconds, how do I tell if it's ok?

[sbelyo]

OK, so I did something stupid and accidentally shorted the secondaries of an Avel Lindberg Y23 transformer for two seconds.  The voltage seems fine after I corrected the error.  Do you think it survived, and or what's the harm in using it?

 

 

[dsavitsk]

Why didn't your fuse blow?

[sbelyo]

it did, I thought I had a very small fuse in there.  Put a bigger one in and it held

[Blueman2]

if voltage is OK, then you probably dodged a bullet.  The issue comes in melting the insulation on the secondary wiring loop.  If you did burn off insulation, you would have nearby wires in the loop touching each other, which would create the effect of fewer loops of wire, which would in turn reduce voltage.  

In any case, I would go ahead and continue to use the transformer.  

[sbelyo]

Yeah, voltage seems ok.  I'll go ahead and put it under load to see if it drops below the voltage that it should be

[Whitigir]

There would have been magic smoke already if the secondary was shorted when the insulation  melted ? 

Edited December 11, 2018 by Whitigir

[sbelyo]

good, no magic smoke