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The reason being, it's got a lot of space to it. Some of these older units
you cannot open them very much, you do not have a lot of working space
A lot of early, underground tools were, you know, shop made there
at the office because you had all your secondary bushings
so close up next to each other that you couldn't get in there to work. You ended up having to
make your own tools. This is really nice. You've got a lot of space from here to here, here to here
here to here and it opens several different
ways.
On top of that, this top lift will open up also
Now let's run through some of the parts that we got here. This is a three-phase
transformer and as most of your connections, your biggest
pain is going to be making up these elbows and getting these cables trained to go in position
but, same thing, we've got bayonet fuses up here
for each phase, comes through. This is your line
coming in, this is the line going out. This is your secondary connections
Can anybody tell me what the voltage on this transformer is?
STUDENT: 75 KBA O'BOYLE: It's a 75 KBA but what's
the secondary connections? STUDENT: Two eight
O'BOYLE: That's right, it's a 28-120. Here, unless you change the
voltage that it's set to, you come over here and you look at your positions
different positions, that you have and compare that to your *unintelligible*
over here.
Again, nature is a big concern in URD transfer
We're going to lock it out. Tag it out. And
ground it. Now, how can we identify if this is a
load break transformer or not? STUDENTS: The white bands O'BOYLE: Well, they used
to be white, but these white bands around the elbows
identify that they are load break
If you're looking at it on the ground, before it had be installed, you can also identify it by this procelain
end on here. That means it is load break, you can break it under
load. But when it
we need a place to put these elbows after we pull them off. So, we need to install three
stand-off bushings. Let's see that done with gloves and a hot stick.
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