Transformer reading

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#17535 - 07/16/16 08:07 PM Transformer reading
Joined: Nov 2013 Posts: 10 micmerci stranger
micmerci stranger Joined: Nov 2013 Posts: 10	I have a transformer that is reading only 1.3 ohms between h1 & h2 on primary side. The reading increases .1 ohm as I measure between h1 and other taps as expected. My question is, isnt this Reading way too low, indicating a short? Thanks in advance.

#17538 - 07/16/16 11:30 PM Re: Transformer reading [Re: micmerci]
Joined: Jul 2016 Posts: 66 JimboNJ journeyman
JimboNJ journeyman Joined: Jul 2016 Posts: 66 Nj-NYC	Is it burnt ? Are you blowing fuses before it?

#17539 - 07/17/16 12:17 AM Re: Transformer reading [Re: JimboNJ]
Joined: Nov 2013 Posts: 10 micmerci stranger
micmerci stranger Joined: Nov 2013 Posts: 10	Trips breaker as soon as starter kicks in. Ended up being fault contactor defective. I guess the transformer reading was accurate

#17542 - 07/17/16 01:19 PM Re: Transformer reading [Re: micmerci]
Joined: Feb 2013 Posts: 761 john jay old hand
john jay old hand Joined: Feb 2013 Posts: 761 ohio	Transformers and other windings use Inductive Reactance after the Voltage is applied. The Ohmic Value with no Volatge is inherently low.

#17569 - 07/19/16 07:18 PM Re: Transformer reading [Re: john jay]
Joined: Jan 2010 Posts: 665 danzeitz addict
danzeitz addict Joined: Jan 2010 Posts: 665 st.louis mo	Ive chased a couple of shorts back to a transformer I had forgotten to unhook while looking for the cause of a blown fuse.

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