Magnum Energy MS Series - Manual (Page 14)

©
2012 Magnum Energy, Inc. Page 5
Installation
1.2 How an Inverter/Charger Works
There are two modes of operation associated with this inverter/charger:
• Inverter Mode:
When the inverter is properly connected to batteries and turned on, the direct current
(DC) from the batteries is transformed into a pure sine wave alternating current (AC).
This AC is similar to the voltage provided by your utility and is used to power any electrical
appliances (i.e., AC loads) connected to the inverter’s output.
• Standby Mode:
When an external source of AC power (i.e., utility power or generator) is connected and
qualifi ed on the inverter’s AC input, it operates in Standby mode. In Standby mode,
the unit operates as a battery charger to convert the incoming AC power into DC power
to recharge the batteries; and at the same time, automatically closes an internal
AC transfer relay to pass the incoming AC power directly to the inverter’s output to continue
powering the connected electrical appliances.
1.2.1 Inverter Applications for Permanent Installations
An inverter can be used for backup power in a permanent location that normally uses utility power,
such as a home or offi ce. When utility power is available, the inverter keeps the batteries charged.
When the utility power fails, the inverter comes on automatically to supply AC power to your home
or offi ce during the power failure. For a home or business, reliable backup power is needed to
prevent lost computer data, or to maintain lights and keep food fresh in the refrigerator/freezer.
In some areas, where utility power is not available, this inverter can be used in a standalone
renewable power system. The inverter allows AC electrical appliances to be run from the storage
battery bank. When the battery bank becomes discharged, either renewable DC sources (solar,
wind, or hydro power) can be used to recharge the batteries, or a generator can be connected to
the inverter to power the system while the batteries recharge.
1.2.2 Inverter Applications for Mobile Installations
Inverters can also be used to provide power in mobile situations, such as in an RV, truck, or boat.
In these applications, the inverter 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.
Figure 1-4, Left Side Features (MS2000 Series)
15 AC Access Cover
AC Input Circuit Breaker AC Output Circuit Breakers
(on -15B, -20B output
breaker models only)
16 17
Note1: The model shown is not a -15B or -20B model, therefore it does not show any AC output breakers
Models without output breakers (CB1 & CB2) use carriage bolts to fi ll the breaker openings.