Fw: LD11 Loadings

[Gareth Cook <g@xxxxxxxxxx>]

Yes, sorry when I referred to toroidal I meant wire-wound toroidal. I
remember discussions where electronic could put crap back on the wire
which may impact the x10 signals.

G.

Gareth Cook
SWG EMEA North Account Manager
IBM SWG - BTE Office - Lotus Park, Staines, TW18 3AG
Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166
AIM Chat : TheBoyG - MSN Chat : chat@xxxxxxx
email: g@xxxxxxx


----- Forwarded by Gareth Cook/UK/IBM on 18/02/2004 08:52 -----

Discussion
Main Topic

"Mark Harrison \(Yahoo!\)" <mph@xxxxxxx>
Yesterday 23:04

.
Subject:
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Re: [ukha_d] LD11 Loadings
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Category:



I'd use a single 200w transformer rather than multiple 20w ones.

However, I'd try to find a magnetic transformer rather than the more
common
electronic (trailing edge phase) type.

The magnetic will cost more, but be long-term more reliable.

The 700w rating of the LD11 is for a making load on incandescent - you'd
need to work out how to de-rate that for use with a magnetic dimmer, but
I'd
be very surprised if it were as much as a factor of three. (That may well
NOT be the case on electronic dimmers - the derating requirements could be
ludicrously high.)

.... of course, what I'd REALLY do is have each lamp on a separate LD11,
so
they could be progressively dimmed out in groups... but that would involve
faffing aruond with ballast loads and the like, since LD11s are only rated
down to 60w minimum :-)

Regards,

Mark

----- Original Message -----
From: "Gareth Cook" <g@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Monday, February 16, 2004 9:51 AM
Subject: Fw: [ukha_d] LD11 Loadings


> Ok, so If I had 10x20w downlights, I could hang these off of a single
200w
> toroidal transformer. So I should use 2.5mm rather than 1.5mm for the
loop
> between the transformer and the lights ? And then standard 1.5mm from
the
> transformer to the LD11 ?
>
> The room is about 5x4metres so distances between the single
transformer
> and the 10 lights should be that great.



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