RE: Electric UFH &

["Phil Harris" <phil@xxxxxxxxxxx>]

Maybe I'm missing the point here but if you have kit that is in some way
sensitive to incoming mains fluctuations then why not simply run it from a
double conversion UPS instead of trying to disconnect yourself from the
national grid? I would assume you're not talking of kit that is
particularly
power hungry...

Phil

> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx]
> On Behalf Of Chris Hunter
> Sent: 21 January 2007 10:07
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Electric UFH &
>
>   across the power input to deal with some faults, which
> result in over-current, some HP instrumention used to use
> some sort of solid state device that was triggered to short
> blow the fuse ... they used to call it crow-barring ...
>
> Chris
>
>
>
> Kenneth Watt wrote:
>
> >I read it. I went away, dealt with some stuff. I came back, read
it
> >again. I had a ludicrous amount of wine and then read it again.
> >
> >Nope, still makes absolutely no sense at all.
> >
> >K.
> >
> >
> >
> >>-----Original Message-----
> >>From: ukha_d@xxxxxxx
> [mailto:ukha_d@xxxxxxx] On Behalf
> >>Of Chris Hunter
> >>Sent: 20 January 2007 19:41
> >>To: ukha_d@xxxxxxx
> >>Subject: [ukha_d] Electric UFH &
> >>
> >>Dammit ... 'forgotten what this thread's called ... sorry ...
> >>
> >>
> >>Thanks, interesting ... I guess I was thinking more of
something
> >>simple, like an electronic crow-bar, that effectively
> shorts the mains
> >>& blows the fuse if ever the voltage becomes excessive ...
such
> >>approaches used to be used in good-quality electronic
> equipment, maybe
> >>they still are ... maybe, too, today, a different
> technology would be
> >>the thing ...
> >>such as that used for resettable fuses in consumer units, or
RCD
> >>shut-off devices ... but something that can pass 100A
everyday, for
> >>the heating system & other household equipment ... plus,
of course,
> >>the UPS to look-after the essentials !
> >>
> >>Actually, thinking about it, with all this fancy HA we're
> all chasing
> >>after, it ought to be possible to program it to tell when
things
> >>aren't what they ought to be, and do the necessary ... even if
i's
> >>just keeping an eye on mains voltage ...
> >>
> >>OK ... what we need, is for Idratek & C-Bus to include a
> volts & amps
> >>measuring device in their ranges ...
> >>
> >>'wonder if the Electrisave could be useful in this, now that
Iain's
> >>broken the code ?
> >>
> >>'sorry, 'thinking out-loud !
> >>
> >>Chris
> >>
> >>-----
> >>
> >>Saturday, 20 Jan'07 - 17:53:06 -0000
> >>
> >>from: Graham Pye   Graham@xxxxxxx
> >>
> >>To protect your electronic devices (eg: PC, TV, etc) then you
just
> >>need a UPS, which also has the benefit of keeping them
> going for a bit
> >>if you
> >>have a power-cut.   I got mine from Andy Whitfield
> (www.upsman.co.uk)
> >>who sells reconditioned UPSs on EBay, and is a very helpful
> guy !   To
> >>regulate the voltage for the whole house, you can get
> constant voltage
> >>transformers, but that would be an expensive solution for all
the
> >>electrics.   I used to work on things like that in a former
> life, but I
> >>never really understood how they worked - it was something
> to do with
> >>the characteristics of the core changing under the
> influence of some
> >>control voltage, but it was a long time ago now !
> >>
> >>Graham
> >>
> >>-----
> >>
> >>Saturday, 20 Jan'07 - 10:52:59 +0000
> >>
> >> >peaking at over 300V ...
> >>
> >>Interesting ... 'wonder if there's a device that could be used
to
> >>limit incoming voltages (with the winds we've been having, and
the
> >>story from Madrid a few days ago - 'though I know our earth's
are
> >>better here, thanks to the damp ... ) - 'could save having
> to dig up
> >>the floor if the worst happens !
> >>
> >>Also makes me wonder about our thoughts of going for wet UFH
with
> >>thermal stores & electric boilers, retaining the option of
> gas -- if
> >>electric cables would be easy & less expensive, maybe we
could keep
> >>the option of gas through use of (for example) a Whispergen
(sp?).
> >>
> >>Chris
> >>
> >>
> >
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> >
> >
> >
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