Xantrex Technology RS3000 - Manual (Page 21)

Introduction
975-0170-01-01 1–3
How RS3000 Works
The RS3000 is designed to:
• invert
• charge
• accept both split phase and dual input. See “Glossary” on page C–2
for a definition of these terms.
With AC input available from the utility grid or a generator, power is
passed through the RS3000 Sine Wave Inverter/Charger to operate
connected AC loads. The remaining AC power not used by loads is
converted to DC power and used to charge batteries.
If AC input power becomes disconnected, fails, or falls out of
specification and is no longer qualified as good AC, a quick transfer takes
place and the RS3000 begins converting DC power from the batteries into
AC power, to continue to supply power to the AC loads.
Inverting
The RS3000’s inverting function:
• produces 120 volts AC from your batteries
• delivers 3000 watts of power on a continuous basis and 7500 watts of
surge power to start loads like pumps and refrigerators.
To prevent power being drawn needlessly from the batteries, the RS3000
has included the load sensing feature.
Load Sense Mode To reduce battery draw, you can turn on Load Sense
mode with the System Control Panel. In Load Sense mode, the inverter
periodically sends out a search pulse to see whether a load is present. If it
finds a load, the inverter/charger will turn on. If no load is found, then the
inverter continues in Load Sense mode, which reduces the inverter draw
from the battery to a minimum.
In Load Sense mode, there’s a short delay—up to the interval you’ve
set—between the time you turn on a load and the time the inverter/charger
delivers power. Load Sense mode can be disabled at any time if you find
the delay to be inconvenient.