Hello and welcome.
Now let's talk about how the tests are transformed.
As you can see transformer comes in different shapes but they all follow the very same symbol principle.
Transformers are wires that have resistance.
So no matter how many terminals there is if there is a resistance between each two pins depending on
the type of transformer it means that the transformer is working.
Now depending on how high or low this transistor is you can identify that primary and secondary coils
or you can identify that a coil is burned out.
Now the first step is metal indication for this thing.
A good transformer.
That primary one.
And second that funding can be tested as follows.
You need to set your multimeter to the resistance measuring for the indicator now place the two probes
on these two terminals of the transformer all that run the thermal that you think are the primary terminals.
Now the meter deflection indicating higher resistance.
This means that this is the primary windowing.
Now if the meter deflection indicates low resistance this means that this is the secondary window.
So whenever you are testing to find out what cha the primary would and which are the secondary the ones
with the high resistance are the primary landing and the ones with the low resistance are the secondary
Wendy.
Now if you want to know if the transformer one thing's primary or secondary are shorted or open you
can use the symbol taste of resistance if the meter deflection indicating zero resistance in the meter.
This means that our transformer is shorted Now if no meet up deflection indicating infinite resistance.
So if the resistance went very very high to the maximum at the analog multimeter or the highest or infinite
value in the digital multimeter This means that there is a cut in our transformer windowing.
So how do you know which are the terminals for primary and secondary.
Usually by copying the transformer name or number and finding this number and looking up on Google for
the street or for that specific transformer you can easily identify these numbered terminals and know
which are for the primary and which are for the secondary now.
Next we are going to cover that as a store but for now what I need you to know is that every transformer
has a different type of test but all depends on a very basic truth which is transformer is basically
out that has the resistance.
So the resistance is too high.
This means that this is the primary one thing and if it is too low this means that it is a secondary
one thing if it is zero resistance.
This means that that specific Windowing is shorted if it is infinite resistance or in finite resistance
it means that this lending is often.
So this is the overall usually what I do is look up the transformer online to know the terminals and
label them with numbers or letters then start that this by identifying the primary and the secondary
then move on to test if there is a shorted or open one thing inside that transformer.
I will add more resources on how to test a transformer to this section but that's it for now.
Thanks for watching.
This is Ashraf from educational engineering team.