ECN Forum Forums Photo Discussion Forums Photos for General Discussion 1000 KVA Transformer.

Yes


No I can not.


This was a tough one, to keep shutdowns to a minimum our work was coordinated with two other electrical contractors.

One contractor was firing up the new POCO 13.8 V double fed switch gear.

A second contractor was handling the 13.8 V feeds and cut over of the second floor tenant that I spoke of.

And then there was us, killing the original feed to the 208 service ad firing up the new 480 service.

Of the 3 electrical contracting companies involved some where union some where not which caused added stress.

In the end all acted professionally which was good because mistakes could kill.

At about 6 AM the contractor handling the POCO work gave me a rotation check and we landed our feeds based on that.

Then 2 hours later when they turned on the power permanently it was backward AHHHH.

This POCO switchgear work was fed from two 13.8 V circuits and one had been landed backward, so when they tried closing a tie breaker the it would open one of the incoming breakers.

I ended up getting these guys to move the elbows on my new pad mount transformer, all was good after that.


Yes, circumvented by us each day, however that door is now outside the electric room.

Once I had my heavy work done a block wall was installed around this area, coming out between that man door and the switch gear.

If you look at the bottom right of the third picture you can see a 'duct tape' stripe laid down on the floor indicating where the wall was going.

It ended making an electric room that was much like Exhibit 110.15 in the hand book.

One large double door opposite the switchgear.

Once the walls went up a fire rated ceiling was installed along with an exhaust fan to the outside.



[This message has been edited by iwire (edited 04-13-2004).]

It's always amazing to see some of this. As a software guy, the biggest I have designed is 100A 208 delta power distribution for some of our testers. BTW, unless this is automotive, I guess the 13.8V is really 13.8kV...
/mike

Thanks Bob. I couldn't see the closer on it, so I was wondering if it was a 1hour room, as required for the big transformer.

YEEEEEEHAW
Now thats some good work!!

DOH! Now I know why the lights where dim!

Sure beats the other way around. {13.8kV on a 13.8V assembly.}

For some reason, 115° seems to fit this one!
Almost like when I first saw the Xformer image, I thought 115° Rise, 5.0% Z!

Scott35

WOW! That thing is huge!

Very impressive!

{Goes back to splice some more signalling wire. The terminals looked small before but now they look microscopic. }

Bob,
Very Nice work!
Sorry to come in so late,
But it looks like a really clean and tidy Install.
Kudos to you and your helper.
In the 3rd pic, is that a Vacuum Cleaner?.
Nice to see that you guys clean up your rubbish!.
In the first pic, what size and type wires are those wires hanging above the Guy working on the panel?
Who is the guy?.
Great all round job, Bob, be proud of that one!.