RE: Re: Voltage Optimisation ?

[Marcus Warrington <marcus.warrington@xxxxxxxxxx>]

Thanks for the advice. I searched back a year or so and found nothing
in th=
e forums on this subject?

Although I am treating this with a large pinch of scepticism, I'm not
total=
ly convinced that there is nothing in it but then again electrickery is
bit=
like magic to me anyway :)

When you say things will use more power when used at lower voltages, my
und=
erstanding of optimiser is that it would be running at the designed
voltage=
(220v)  rather than a lower voltage, i.e. it wouldn't be running over volt=
age (240v) as it is currently. Surely running at the absolute designed
volt=
age is better for equipment than running over or under as it is at the
mome=
nt?

As for my lights running dimmer, I have all my house lights on X10 LD11
dim=
mers and already run them all at around 90% brightness in order to prolong
=
life so probably would notice any difference.

Marcus

From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of r=
ossryles
Sent: 16 May 2012 13:13
To: ukha_d@xxxxxxx
Subject: [ukha_d] Re: Voltage Optimisation ?



I'd stay well clear.

The biggest electrical loads in a house are things that heat. Be that
space=
heating, an electric shower or an oven. They will be no more efficient at =
220V than 250V. A kettle will be slightly less efficient because it will
ta=
ke longer to boil, giving more time for heat loss.

Incandescent lighting or fluorescent lighting on magnetic ballasts will be
=
much dimmer, prompting the use of more numerous or higher wattage lamps.
Yo=
u'd be better spending the money on good LED lighting.

No good for switched mode power supplies (PC, phone charger, TV,
electronic=
ballast lighting). These will draw more current at the lower voltage, incr=
easing both cable losses and internal losses.

Might work for lightly loaded motors, excluding the fridge compressor, but
=
most motors will draw more current, run hotter and be at increased risk of
=
failure.

Finally there is the energy lost in the "optimizer", which though
never men=
tioned by the sales people is not zero.

--- In ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>,
Marcus Warr=
ington <marcus.warrington@...<mailto:marcus.warrington@...>>
wrote:
>
> The guys who installed my solar panels (which I'm very pleased with)
also=
mentioned that they supply and fit voltage optimisation units. Specificall=
y one of the guys has already installed the Voltis VH60 unit in his own
hou=
se and recons he's seeing a reduction of around 23%. The cost supplied and
=
fitted is around =A3440+vat with a payback period of between 4 to 5 years.
>
> Using the SunnyExplorer software I've used our solar inverter to check
ou=
r incoming voltage which does seems to be average around 246-248v most of
t=
he time, so plenty of potential reduction down to 220v.
>
> Has anyone else on the list had experience or opinions on these types
of =
unit ?
>
> Marcus
>
>
>
> [Non-text portions of this message have been removed]
>



[Non-text portions of this message have been removed]



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