Connecting the isolation transformer

[durak]

On the right you can see the mains coming in. There's also a second ground wire, a short one which is supposed to be bolted to the cab? Is this neede or can I just leave it alone?

On the left there's two 110V (or 115V I think, cause the mains here is 230V instead of 220V) outputs. Which two wires I should connect to the monitor? The monitor has black and red wires in the power plug. By the way, will few volts' difference have any effect on the monitor? Because I don't think it's exactly meant to be used at 115V.

When it is connected, will I get electrocuted if I touch the isolation transformer?

[proview]

Hello durak.

Connect the short ground connection to the chassis of your monitor (just extend that connection).

The extra voltage (115) should have no effect on your monitor. My transformer is the same.

Check the output from the transformer and connect your monitor to whatever connections give the 115 volt (usually the 2 heavier connections).

You won't get electrocuted by touching the transformer. Just don't touch any naked connections. The transformer frame will not be live in any way. If you have any doubts then just make a guard from acrylic sheet to cover the terminals.

Search this forum for other transformer topics as this has been mentioned on several ocassions.

Regards to all.

John.

[MonitorGuru]

The voltage doesn't matter. The thing that matters is the ratio of the isolation.

If 1:1, then you can feed it 60 volts and it will feed out 60 volts, if you feed it 100, it will send out 100.

If it's not 1:1, THEN you have a problem.

The US seems to have about 3 "acceptable" voltage limits. Depending on what you read and who you ask, it can be: 110, 115 and 120.  They all mean the same thing.  All electronic devices meant to run in the U.S. can handle anything with 115 +/- about 10% (e.g. 109 to 124).  

At my house, I get 117.5 volts most of the time.  In another town I've read 120.1.


You just can't feed it an extreme voltage like 240 and hope it works as it likely would burn up the windings.

Again, it's the ratio of the input to output that matters, not the exact "rated" amount.   It sends out exactly what you send in.

[durak]

I live in Finland so my mains is 230V. The isolation transformer I have turns mains to 2 isolated 115V outputs (assuming the mains is exactly 230V).
I already posted this to my other thread on the Monitor board, but I'll ask it here again.

I found out (pretty sure) my monitor needs 100V. It is Kaga electronics (nanao) japanese monitor EZ-18EN-A. From what I read on these boards (not exactly Nanao/Kaga, but other japanese monitors like Sanyo Nintendo that need 100V) it will not work with the isolation transformer I was sold with it, am I correct?
 
Please take a look of this thread, I'll post more questions about what I should do there
http://www.arcadecontrols.org/yabbse/index.php?board=4;action=display;threadid=23910

Thanks!