Transformer testing

[ntrevino85]

Found a video showing a continuity test on a double bushing trfx. Where is the case ground attached internally on a double bushing transformer if the other end of the H1 is the H2? On a single bushing trfx the end of the primary winding is at the case. If this is true why is there no continuity when I test it?
Thanks for the help...

 

[Hv&Lv]

Found a video showing a continuity test on a double bushing trfx. Where is the case ground attached internally on a double bushing transformer if the other end of the H1 is the H2? On a single bushing trfx the end of the primary winding is at the case. If this is true why is there no continuity when I test it?
Thanks for the help...

You talking about a normal two bushing pole transformer?
If so it isn’t attached internally. H2 is normally grounded outside to a common(neutral/ground) and you hit the case ground and center X0 (if needed) all to a common outside.

 

[ntrevino85]

Ok got it. But, on a single bushing trfx, why don't I get continuity when I check H1 to case ground.

 

[Hv&Lv]

Ok got it. But, on a single bushing trfx, why don't I get continuity when I check H1 to case ground.

You should unless the internal fuse is blown or the coil is bad.