2 how an inverter/charger works – Magnum Energy ME Series User Manual
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©
2012 Magnum Energy, Inc.
Introduction
AC Access Cover
AC Input Circuit Breaker
AC Output Circuit Breakers
(on -15B, -20B output breaker models only)
Figure 1-4, Left Side Features (ME2000 Series)
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1.2 How an Inverter/Charger Works
An inverter takes direct current (DC) from your batteries and turns it into alternating current (AC).
It also takes alternating current (when connected to an onboard generator or to utility power) and
transforms it into direct current to charge your batteries. These two modes of operation associated
with this inverter/charger are referred to in this document as:
• Inverter Mode:
When the inverter is properly connected to batteries and turned on, the direct current
(DC) from the batteries is transformed into a modifi ed sine wave alternating current (AC).
This AC is similar to the voltage provided by a utility for your home, and is used to power
the electrical appliances (i.e., AC loads) connected to the inverter’s output.
• Standby Mode:
When an external source of AC power (e.g., utility power or onboard 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.
Note: ME Series inverter shown above is a -15B or -20B model. Models without AC output breakers
(CB1 & CB2) use carriage bolts to fi ll the breaker openings.