RE: Electric UFH &

["Phil Harris" <phil@xxxxxxxxxxx>]

Ah - sorry - the whole thread had gone on so long I'd lost the point of
what
it was about (or maybe I'd just lost the will to live)...

Phil

> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx]
> On Behalf Of Chris Hunter
> Sent: 21 January 2007 12:24
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Electric UFH &
>
> yes, but ... the original point was to protect electric UFH &
> electric boilers feeding thermal stores from over-voltages
> that might burn them out & expensive replacement activities ...
>
> Chris
>
>
>
> Phil Harris wrote:
>
> >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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