Appendix C - Power Consumption And Output Waveforms; Appliance Power Consumption; Inverter Output Waveforms; Figure C-1, Ac Waveforms - Magnum Energy MagnaSine Hybrid MSH3012RV Owner's Manual

Appendix C – Power Consumption and Output Waveforms
Appendix C – Power Consumption and Output Waveforms
C-1

Appliance Power Consumption

The MSH3012RV inverter/charger can power a wide range of household appliances including small
motors, hair dryers, clocks, and other electrical devices. 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.
Appliances (TVs, VCRs, stereos, computers, coffee pots, incandescent lights, and toasters) can all
be successfully powered by your inverter. Larger electrical appliances, however, such as stoves,
water heaters, etc., can quickly drain your batteries and are not recommended for this application.
All electrical appliances are rated by the amount of power they consume (see Table C-1). The
rating is printed on the product's nameplate label, usually located on its chassis near the AC
power cord. Even though it is diffi cult to calculate exactly how long an inverter will run a particular
appliance, the best advice is trial and error. Your MSH3012RV inverter has a built-in safeguard
that automatically protects your batteries from over-discharge.

Table C-1, Typical Appliance Power Consumption

Device Load
Blender 400W
Computer 300W
Drill 500W
Hot Plate 1800W
C-2

Inverter Output Waveforms

The inverter's output waveform is the shape of the wave that alternating current makes as its
voltage rises and falls with time. Today's inverters come in three basic output waveforms: square
wave, modifi ed sine wave and pure sine wave.
• Square Wave – The simplest AC
waveform. Some types of equipment
behave strangely when powered
from a square wave inverter.
• Modifi ed Sine Wave – Also called
a "quasi sine wave". This output
looks like a one-step staircase and
the waveform changes its width to
continually provide the correct RMS
output voltage regardless of the
battery voltage. Most loads that run
from a sine wave will also run from
a modifi ed sine wave. However,
things such as clocks and furnace
controllers may have trouble.
• Sine Wave – An AC waveform that
looks like rolling waves on water. It
rises and falls smoothly with time.
The grid puts out a sine waveform.
Any plug-in AC
operate from a sine wave inverter.
© 2020 Sensata Technologies
Device
Coffee Maker
Color TV
Hair Dryer
Iron
equipment will
Load Device
1200W Light (Flo)
150W Microwave
1000W Light (Inc)
1000W Refrigerator
200
160
120
80
40
0
40
80
120
160
200

Figure C-1, AC Waveforms

Load
10W
1000W
100W
500W
Square Wave
Sine Wave
Modified
Sine Wave
TIME
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