Hi William,
That is the way to do it. The inverter controls the generator
automatically, based on battery voltage and / or current. The
generator can be started manually whenever desired. The inverter
(critical) loads will also be fed by the gen-set through the internal
transfer switch on the inverter, while batteries are being charged.
Drake
At 09:46 PM 11/24/2008, you wrote:
Friends:
I am bidding an installation in which the customer owns a whole
house generator. The generator is 30 KVA and we will be installing
a 4.5 or 6.0 KVA XW system. Obviously, the inverter will not power
the entire house. If we segregate the non-critical loads and
connect them to a grid-fed panel, the generator will not power
them. If we let the generator run every time there is an outage,
this negates the need for a inverter system. What to do?
The transfer switch sends a two wire start signal to the generator
upon a grid outage. After the transfer switch senses generator
voltage, it effects a transfer.
My brainstorm is to intercept that two wire start signal. I will
connect it instead to the XW inverter. We will segregate the loads,
feeding the critical loads from the XW and the Non-critical loads
from the output of the transfer switch. In the case of a grid
outage, the critical loads will receive uninterrupted power. The
Non-critical loads will not have power unless the generator is
started by the XW. Once the XW (or the home owner) starts the
generator, the transfer will occur. We will put a control panel in
the house so the home-owner can start the generator if the
No-critical loads are needed.
This seems clever to me, but I am biased. Am I missing something???
William Miller
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Drake Chamberlin
Athens Electric
OH License 44810
CO License 3773
740-448-7328
740-856-9648
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