SW's in marine areas and paralleling with inductive loads. [RE-wrenches]
Matt Tritt
solarone at charter.net
Mon May 10 20:51:22 PDT 2004
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Carl,
What you need are Outback FX 2000's stacked. Since they are sealed
units, corrosion won't be a problem. Plus, they can be stacked in
series, series parallel and parallel to almost any size imaginable.
I recently installed a 14 kW quad-stack that is (now) working flawlessly
at running a huge system with multiple induction motors, computers,
refers, ice makers, a server, you name it. Save yourself from future
piles of rust and get a better sine wave!
Check the Outback website sometime.
Cheers,
Matt T
-----Original Message-----
From: Carl Emerson, Free Power Ltd. [mailto:freepower at freepower.co.nz]
Sent: Monday, May 10, 2004 8:30 PM
To: RE-wrenches at topica.com
Subject: SW's in marine areas and paralleling with inductive loads.
[RE-wrenches]
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Hi there gang,
Who at Trace should I contact about the suitability of the SW series in
a marine environment.
I have observed rusting on the cases of two units and suspect that the
electronics have suffered from corrosion.
Also I need advice on the issue of whether inductive loads can upset the
SWPAR units. I am concerned about the collapse of inductive fields
during transfer.
I measured a 2.5 second dip in the supply transferring from generator to
inverter. The drop was from 235 to 193 Volts.
I have just finished an audit on three schools on an Island for the
Govt. and none of them work properly.
They all have paralleled SW3048E's and in one case the installation is
15 feet from the high tide mark.
There have been a heap of problems and I am concluding that the basic
design is flawed. They are running about 18 computers on the same
common phase as several pumps for the sewage system, pool circulation
and water pressure. There is also refrigeration, microwaves
photocopiers - you name it...
I think they should have split the power distribution and run the
inverters separately creating two phases, keeping the sensitive
equipment separate from the 'dirty loads'.
Any comment appreciated.
Carl Emerson
Free Power Ltd.
Auckland NZ
[Non-text portions of this message have been removed]
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