Enerdrive ePRO COMBI Owners Manual
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2. DESCRIPTION
The Enerdrive ePRO Combi is an all-in-one combination of a DC to AC true sinewave inverter, an advanced
multi-stage battery charger and a high speed AC transfer switch. All this is build into one compact, yet installer
friendly enclosure. Besides these three main functions, there are several unique features offered as well. Some
of which benefit from the strong interaction between the three main functions.
The main task of the ePRO Combi is to act as an uninterruptible AC power supply (UPS). In case of a grid/
generator failure or disconnection, the ePRO Combi immediately stops charging the battery, releases the
AC transfer switch and activates the inverter which takes over the supply to the connected loads. All this is
achieved so fast, that even very critical loads like computers will continue to operate without any problems. In
case the grid/generator is reconnected again and the voltage and frequency are within acceptable limits, the
ePRO Combi activates the AC transfer switch and battery charger again, while deactivating the inverter. The
connected loads are now supplied again by the grid/generator without any interruption.
Additionally, the ePRO Combi offers features like :
• AC Input Power Boost, which temporarily assists weak AC input sources when the connected load needs
more power than available from the grid or generator.
• AC Input Current Limit, which limits the maximum current consumed from the AC input source by the
ePRO Combi. This limit is user adjustable.
• Power Factor Corrected AC Input, which optimizes energy efficiency and makes sure that the maximum
amount of charging current is available from your AC source.
• Intelligent 4-stage charge programs, user programmable to fit any battery type.
• Fully programmable inverter, transfer switch and battery charger parameters, using the Dashboard for
Windows software.
• Programmable alarm relay, for optimal control of external devices like generator starting or selective
load disconnection.
• Freely assignable trigger input, which allows the user to control the ePRO Combi by external events.
• Temperature controlled fans, to guarantee silent operation under less than full load conditions.
• Temperature compensated battery charging, using the standard supplied battery temperature sensor
for maximum battery lifetimes.
