Powering an AC load through an Inverter
Powering an AC load through an Inverter
(OP)
I am about to install a vessel with electric actuators. My client specified AC power and so I got AC actuators. Now he's saying there is a delay in getting AC to the site and he wants to use batteries, inverters, and Solar panels.
The application draws 1.25 A for a couple of seconds every couple of minutes. The whole load is 7.8 A-hr/day at 110 VAC (without allowances for dark, inverter load, etc). Now comes my confusion. When I'm sizing batteries I'm going to assume than an amp is an amp and I will need to provide a battery that can do 8 A-hr/day at 110V times allowances for the inverter, for dark, and for clouds (140W) and not some other calculation that gives me numbers between 0.4W and 275W.
David
The application draws 1.25 A for a couple of seconds every couple of minutes. The whole load is 7.8 A-hr/day at 110 VAC (without allowances for dark, inverter load, etc). Now comes my confusion. When I'm sizing batteries I'm going to assume than an amp is an amp and I will need to provide a battery that can do 8 A-hr/day at 110V times allowances for the inverter, for dark, and for clouds (140W) and not some other calculation that gives me numbers between 0.4W and 275W.
David





RE: Powering an AC load through an Inverter
You need to learn the current draw for the first few milliseconds, because your system has to supply it.
Mike Halloran
Pembroke Pines, FL, USA
RE: Powering an AC load through an Inverter
David
RE: Powering an AC load through an Inverter
Even better, our sparky wizards designed their own power supply instead of buying one. That wouldn't start 'em either. The customer demanded and got a battery and charger instead.
Mike Halloran
Pembroke Pines, FL, USA
RE: Powering an AC load through an Inverter
You need to understand the standby impact. This will likely increase the energy demand by something like 10X.. Think 80Ahrs or there abouts.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Powering an AC load through an Inverter
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