AC Coupling Line Diagram
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AC Transfer Inside
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Main Utility
Panel
Utility/Grid
Power
Utility Power
Disconnect
Bi-Directional
Utility Meter
Battery Bank
Magnum Energy
Battery-Based
Standalone Inverter
(MS-PAE Series)
MMP Panel
(Inverter
Disconnects),
with remote to
set “custom”
battery setting.
Batteryless
Utility-Interactive
Inverter
PV Array
Disconnect
PV
Performance
Meter
Sub-Panel
(Essential Loads)
Photovoltaic Array
Page
Date
1-MAY-2010
1 of 1
MAGNUM AC COUPLED LINE DIAGRAM
Document Name
Diversion
Controller
Multi-Functio n DC
Charge Controller
Battery
Management
Diversion
Load
1. This diagram is provided to show the installation of a Magnum inverter that is AC coupled to a batteryless
Utility-Interactive inverter. Most of the ground connections were omitted for clarity.
2. To prevent damage to Magnum’s battery-based inverter, the power rating of the Photovoltaic Array must
be 90% or less than the continuous power rating of the Magnum inverter.
3. The AC Couple Support Mode feature is only available in the MS-PAE Series with software revision 4.1 or
higher, and is enabled using an optional remote control with the “custom” battery type setting.
4. When enabled, the AC Couple Support Mode feature causes the AC output frequency to shift when the
battery voltage reaches a high level. This frequency shift is enough to cause the Utility-Interactive inverter to
disconnect and stop charging the battery bank. However, this feature does not guarantee protection against
overcharging the batteries. Therefore, some form of Battery Management must be provided to protect the
battery bank from being overcharged during utility power failures.
Notes:
Copyright k 2010 Magnum Energy, Inc. All Rights Reserved. This document may be copied and furnished to others, provided that it is
published and distributed in whole and includes the copyright notice and all references to Magnum Energy.
240VAC
/60HZ
120/240VAC
/60Hz
OUT
IN