Re: Agree. - jea48 - Tweakers' Asylum

Re: Agree.

Posted by jea48 (A) on April 30, 2006 at 19:23:12

In Reply to: Agree. posted by Al Sekela on April 30, 2006 at 14:11:03:

>>" Simply connecting one end of the secondary to neutral and finding which way gives mimimum voltage from the other end to line is the best way to figure out the transformer orientation."<<
>>>>>>>>>>>

The primary is connected to 120V
H1&H3- connected to the hot conductor.
H2&H4- connected to the neutral.
The output voltage across X1 and X2 = 60V

I only tested the X1 / X2 winding.
====

If I understood correctly.

I first connected X2 to the line neutral, with the connected primary.
I then measured the difference of potential between X1 and the Hot line conductor, connected to the primary. Reading 59vac.

I then connected X1 to the line neutral
Measured the voltage between X2 and the Hot line. Reading 183.5vac

Using your test I come away with the same results as my test. As I was doing your test I realized I was connecting the secondary in a buck configuration for the first test, and a boost in the second test.

By reversing the hot and neutral connections on the primary the results were also reversed on the secondary, for your test method as well as mine.

One thing for sure with yours more care must be taken.

Thanks Al for your input.
Jim

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Follow Ups Full Thread

Topic - Isolation transformer 120/ 240V primary/ Balanced 60V-0V-60V secondary - jea48 17:14:37 04/29/06 (21)

Loading, or lack of - Jon Risch 21:47:42 04/30/06 (8)

New multimeter....... - jea48 12:03:19 07/02/06 (0)

As mentioned in other posts, there is no ground reference on the secondary side, unless you provide one at the secondary - jea48 16:58:44 05/03/06 (4)

Yep - Jon Risch 21:49:57 05/03/06 (3)

Let me try again. - jea48 17:36:59 05/04/06 (2)

Re: Let me try again. - Jon Risch 20:28:00 05/04/06 (1)

Re: Let me try again. - jea48 19:20:16 05/08/06 (0)

Re: Loading, or lack of - jea48 20:59:30 05/01/06 (1)

Re: Loading, or lack of - Jon Risch 21:02:50 05/03/06 (0)

Re: (?)Isolation transformer 120/ 240V primary/ Balanced 60V-0V-60V secondary - cdb 15:21:43 04/30/06 (1)

I agree. - jea48 16:39:01 04/30/06 (0)

Try it this way - Russ57 09:34:55 04/30/06 (1)

Re: Try it this way - jea48 10:49:29 04/30/06 (0)

Re: Isolation transformer 120/ 240V primary/ Balanced 60V-0V-60V secondary - SysInfo 23:19:31 04/29/06 (6)

Thank you for your response. - jea48 08:09:47 04/30/06 (5)

Agree. - Al Sekela 14:11:03 04/30/06 (2)

Re: Agree. - jea48 19:23:12 04/30/06 (0)

Re: Agree. - jea48 14:25:14 04/30/06 (0)

try this - Tweekeng 11:09:42 04/30/06 (1)

Re: try this - jea48 14:25:54 04/30/06 (0)

Final test. - jea48 18:13:43 04/29/06 (0)

Follow Ups

Re: Agree. - jea48 19:23:12 04/30/06 (0)

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