RE: Automatic Generator cut in

["Stuart Whyte" <lists@xxxxxxx>]

Mick,

Picked up this thread a bit late, so apologies if this has already been
mentioned.

Take a look at http://www.deepseaplc.com/  They
design and build genny
control panels.  I spent 2 years working with these systems and they are
very versatile.  One of the models (sorry cant remember name) can be
controlled/monitored using RS232.

These panels can monitor mains, genny and UPS voltages, control change
overs
and isolate each supply from the others if required.  Note that the change
overs are a separate product, the panel only controls the switching of
these.

A suitable supplier (usual disclaimer applies, no association etc) is
http://www.denro.co.uk/deepsea.htm

HTH, any more info need give me a shout.

S.

-----Original Message-----
From: Mick Furlong [mailto:hiltoneltd@xxxxxxx]
Sent: 10 May 2003 10:41
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Automatic Generator cut in


Thanks Nigel

do you have any details such as manufacturers or websites for gennys with
self start panels? How do I know if the genny produces clean enough power
for the UPS? Point taken on the loading, I was considering somewhere
between
5 and 10KVA but with oil burner and underfloor heating meaning a fairly low
load I too will need to consider the loading of the genny.

Regards
Mick

-----Original Message-----
From: Nigel Giddings [mailto:nigel.giddings@xxxxxxx]
Sent: 10 May 2003 08:37
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Automatic Generator cut in


Mick,

You need to ensure that the genny produces power clean enough to satisfy
the
ups otherwise it will continue to run on the battery.

Also gennys run best at 60 to 80% loads so sizing is important, I am
looking
at about 10KVA with two immersion heaters (3Kw) in a heat store to dump
power when the house is on low load....

Self start panels are commercially available for this size of generator
and
that is the way I will e going.

Nigel

-----Original Message-----
From: Mick Furlong [mailto:hiltoneltd@xxxxxxx]
Sent: 09 May 2003 23:24
To: ukha_d@xxxxxxx
Subject: [ukha_d] Automatic Generator cut in

OK something on topic for a change;)

Scenario is as follows.....

Generator in outside boilerhouse

3xUPS (one with interface to Server PC) inside main house running some
lighting and some computer/networking kit.

Every imaginable cable type running between the boiler house and the main
house and a duct to run more if needed.

Questions are...
How do I get the generator to autostart if there is a mains failure?
Do I need a special generator (I haven't picked one yet)?
I believe the wiring needs to be isolated from the mains when the
generator
is running how do I do this automatically?
How do I get the system to cut over to the mains once the power is back?
Finally how do I do all of this on a reasonable budget?

Thanks in advance for any ideas
Mick






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