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Old 3rd November 2005, 04:33 PM   #1
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Default Stupid question , but this looked like the place to ask .

Ok , I aquired 3 transformers but have no ideal what to do with them or if they would be of use to anyone in the DIY Audio field. They are brand new , never had power ran through them , atleast not since they left the factory if they were tested there . They were pulled from brand new APC ups backups , there were 4 of them and when they came in the tech. guy paid no attention to the box and just pluged the first one up , pluged in a new dell comp , on came the power and off went the dell and the ups . Then he looked and found out that they were made for overseas and not the US so were 220v ac not 110v ac .APC replaced all 4 and said dispose of them . So The tech guy pulled out the batteries and a few other things before disposing of them but I got the transformers . So they should be 220v stepded down to 110 120 he thought the board was stamped 120v . anyway they weigh about 5lbs each and are marked

430-0147 REV .1
CLASS B (130 C ) Z 150 H
LEI-4 E154515

There is 3 wires
1 black 1 red 1 white the black and the red has a blue boot over the female spade end and the white has a clear boot . I assume the black and red is 220v in and the white is 120 v out as it shows I know nothing about these .

So back to the original question , are these something there would be a use for and or what value would they have ? I don't know of any use I'd have for them so thought of offering them as a sell or trade item on the Trading Post here or the dreaded E-bay if its worth it .
Any advice or suggestions?
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Old 3rd November 2005, 04:54 PM   #2
Netlist is offline Netlist  Belgium
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Any chance you could take a picture?

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Old 3rd November 2005, 04:57 PM   #3
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They may be usefull for people running US equipment in Europe (220VAC > 120VAC) or people running European equipment in the US etc (120VAC > 220VAC). If they indeed are step up/down.

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Old 3rd November 2005, 05:58 PM   #4
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Not the best picture but I think you can figure out my measurements and read the info on it.
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File Type: jpg trans1.jpg (51.7 KB, 1065 views)
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Old 3rd November 2005, 09:34 PM   #5
Eva is offline Eva  Spain
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It looks like an auto-transformer.
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Old 12th December 2005, 11:27 PM   #6
wboyd is offline wboyd  United States
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I have one almost exactly like it (serial and model #'s seem to be the same)...came out of an APC Backups. I am not sure of the voltages yet, I have not really done any testing yet, but if you are still looking for info on it, you can email me directly, or if you have more info on it, please send me some data.

I am hoping that it will be usefull in a future power supply project.


Wayne Boyd
"I am always doing that which I cannot do, in order that I may learn how to do it"
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Old 28th April 2006, 01:37 AM   #7
GFD is offline GFD  United States
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Default E154515 LEI-4 Transformer

I typed in E154515 LEI-4 in Google and it led me to this forum!!

I needed a hefty transformer for a project and found this in my basement. I had forgotten where it came from but one of the replies indicated it was from a APC UPS. That reminded me! I stripped it out of a BK500, I think it was, a year or so ago.

Anyways, I took it to work today and hooked it up to a Variac and came up with the following:


Black & White
(lighter guage wires than secondary)

Orange - probably a thermal sensor. just ignore.


Blue & Brown - 18 VAC (Approx. 20 V, unloaded)

White & Red - 12 VAC (Approx. 14 V, unloaded)
Black is the center-tap.

I loaded it down to over three amps and the voltage only dropped to about 13 Volts. It appears to have more than ample current output for my needs.

Good luck.
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Old 10th November 2008, 03:06 PM   #8
Jeffp is offline Jeffp  United States
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Default Transformer ID

Your numbers matched a transformer I am looking for to repair a PC board for a stove control. The picture is different though. Who is the manufacturer?
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Old 10th November 2008, 03:43 PM   #9
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Not sure the Manufacturer , these were pulled from brand new APC backups .
I have at least 2 possibly still the 3rd one as well .
The only markings on them are
430-0147 REV .1
CLASS B (130 C ) Z 150 H
LEI-4 E154515
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Old 17th January 2009, 10:46 PM   #10
EEguy is offline EEguy  United States
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Default transformer manufacturer

I got a transformer out of one of these APC units myself and thought it would work well in a power supply, etc.

It also has the LEI-4 and similar numbers on it.

After searching google a bit I found this company:

Hopefully it helps...
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