Elevator backup power [RE-wrenches]

[William Miller]

Friends:

I have a prospective client who has requested I propose a backup only
system.  There is no convenient space on his property for PV nor is wind an
alternative.  He wants a grid charged battery back up system.

The client is in a wheel chair and one of the loads he wants backup for is
an elevator.  He also wants to backup two refrigerators, a home office, an
electric gate, etc.

I am apprehensive about the possibility that the client will choose to get
in his elevator while the batteries may be low and half way down (or up)
the inverters conk out on a low battery condition.

I have thought of putting a battery monitor in his elevator and instruct
him not to use the elevator below a certain voltage.  I could also lengthen
the Low Battery Cut Out time so that the inverters will not shut down on a
battery sag created by running the elevator.  I will also recommend a
telephone in his elevator if he doesn't already have one.

Any other suggestions?


Thanks,

William

__________________________________________________________________
William Miller
SLO Communications: Communications and Power Systems Consulting
PO Box 50, Santa Margarita, CA 93453
Voice :805-438-5600		Fax: 805-438-4607	VMail: 805-546-4875
email: wrmiller at slonet.org
License No. C-10-773985
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