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© 2015 Sensata Technologies
Introduction
2
1.2.1 Inverter Applications for Mobile Installations
In mobile applications, an inverter/charger provides power to the
AC loads using the energy stored in the batteries and recharges the
batteries when shorepower or an onboard generator is available.
1.3 Advantages of a Pure Sine Wave Inverter
Today’s inverters come in two basic output waveforms: modi
fi
ed
sine (which is actually a modi
fi
ed square wave) and pure sine wave.
Modi
fi
ed sine wave inverters approximate a pure sine waveform and
will run most appliances and electronics without any problems.
The output of a pure sine wave inverter is equal to, or in many
ways, better than the shorepower used in your home. Virtually any
electronic device will operate from a pure sine wave inverter. Motors
run cooler, microwaves usually cook faster, and clocks keep better
time just to name a few examples.
1.4 Appliances and Run Time
The MMSA1012 inverter/charger can power a wide range of
household appliances. As with any appliance using batteries for
power, there is a certain length of time that it can run—this is called
“run time”. Actual run time depends on several variables including
the size and the type of appliance, the type of batteries installed in
your application, as well as the battery’s capacity and age. Other
factors such as the battery’s state of charge and temperature can
also affect the length of time your appliances can run.
Depending on your inverter capacity, larger electrical appliances
can be used for short durations. However, loads that are used for
longer periods such as stoves or water heaters can quickly drain
your batteries and are not recommended for inverter applications.
All electrical appliances are rated by the amount of power they
consume. The rating is printed on the product’s nameplate label,
usually located on its chassis near the AC power cord. Even though it is
dif
fi
cult to calculate exactly how long an inverter will run a particular
appliance, the best advice is trial and error. Your MMSA1012 inverter
has a built-in safeguard that automatically protects your batteries
from being over-discharged.
1.5 Standard Features and Benefi ts
The MMSA1012 inverter/charger
converts 12-volt direct current
(VDC) power from your battery to 120-volt alternating current
(VAC) power.
With the multi-stage battery charger feature, the
incoming AC power is optimized using Power Factor Correction
(PFC) technology to keep the inverter’s battery bank fully charged.
The MMSA1012 is designed to allow easy installation and use, and
its die-cast aluminum baseplate ensures maximum durability and a
cooler, more ef
fi
cient operation.