Balanced mains transformers, surge protections?

[Reid Malenfant]

Do you think that one of these balanced mains supply units would be suitable to be connected to the cable run in the loft or does it need to be "in view" so to speak for safety reasons etc?

Steve

If it doesn't happen to have one already there is nothing stopping you attaching a thermal switch to the transformer windings via some heatsink compound. If it gets too warm it'll be disconnected. Something tells me it'll have some form of protection built in anyway, but there is nothing to stop you being more careful now is there

[worrasf]

Thanks Mark
Steve

[Ali Tait]

Save yourself some dosh & connect the PF30s after the balanced transformer & you'll have all the surge protection you need as well as a nice load of sockets

That's what I already said.

[Ali Tait]

If it doesn't happen to have one already there is nothing stopping you attaching a thermal switch to the transformer windings via some heatsink compound. If it gets too warm it'll be disconnected. Something tells me it'll have some form of protection built in anyway, but there is nothing to stop you being more careful now is there

If you look at the link, it says the trannie has built in thermal overload.

[Reid Malenfant]

That's what I already said.

So did i in post #3, you were in post #4. I often wonder how many times things need repeating before they sink in

[Welder]

I think the 5kVA unit has fuses on both legs.
As for overall safety, well I’m fairly safety conscious so I don’t leave live electrical equipment unattended.
The 1.5 kVA unit I had did get warm, but not overly so. Given the way they are built my personal view is I would want the unit somewhere I could check on it every now and then. I set the unit up behind my sofa in the end which has a sound absorbing foam at the back of the base and a deflector panel at the front (box style sofa construction, read cheap)
I did think about this when considering buying the 5 kVA unit and should I have gone ahead, the plan was to remount the transformer on better bushes in the hope that the hum became less audible.
Bear in mind, just audible above 45 db ambient isn’t what most would call intrusive unless you live in a very quiet environment (think spinning hard drive level of noise) With music playing I doubt it would be noticeable.

[Ali Tait]

So did i in post #3, you were in post #4. I often wonder how many times things need repeating before they sink in

No, you stated in post 3 what you already have, I then suggested that Steve could plug his Belkin into the Airlink trannie, which you repeated in a later post.
I too often wonder how many times things need repeating before they sink in.

[jantheman]

A minor warning........I got one and the v/out was +4.7% of v/in. Not much but when your mains is towards the top of the specified tolerance level, this could push it over. Not saying they are all like that, just that mine is.
Dont use mine, I prefer a plugin like this http://cgi.ebay.co.uk/No-Noise-Ultra...item3f04260fc3

[Reid Malenfant]

Lets not clutch at straws here Ali Yep you are dead right, i stated in post 3 that i was already running a pair of Belkins connected to the balanced output of a P600

Now apart from the fact that fact that the P600 is a regenerator it's output is still balanced & the Belkins work fine, even if they show things are connected incorrectly (which they aren't - it's just that they get confused with balanced mains)

By the way, i'm glad i'm not the only one that wonders

[Reid Malenfant]

A minor warning........I got one and the v/out was +4.7% of v/in. Not much but when your mains is towards the top of the specified tolerance level, this could push it over. Not saying they are all like that, just that mine is.

What was the rating? 4.7% sounds like it was about 500VA maximum. There is such a thing as transformer regulation & the bigger you go the less this becomes. A typical 3KVA transformer will have a regulation of about 3%, 5KVA maybe 2.5% or less