Magnum Energy Series Stacking Cable Kit (ME-SSI) - Manual (Page 8)

©
2010 Magnum Energy, Inc.
Battery Connections for Series Stacked Inverters
When inverters are series stacked, they must operate from a single
battery bank. A single battery bank confi guration helps to balance
charging and discharging. If your battery bank uses multiple bat-
tery strings (i.e., batteries connected together in series to provide
the required DC voltage), ensure each battery string is connected
together in parallel to form a single battery bank.
For example: If you have eight 6 volt batteries and require a 24
volt battery bank, connect four of the 6 volt batteries together to
make 24 volts. This is known as a series battery string. The other
four 6 volt batteries connected together will also make another se-
ries battery string. The negative ends of these two battery strings
must be connected together. Likewise, the positive ends of the two
battery strings must be connected together. Then, the two battery
strings are connected together in parallel to make a single battery
bank to power the stacked inverters (as shown in Figures 3 and 5).
CAUTION: The DC negative interconnect cable provided in
the ME-SSI kit is a crucial part of the DC wiring and must be
used. It ensures that the negative battery terminals of both
inverters are at the same voltage potential. This allows proper
communication of the clocking signals and helps prevent
damage to the stacking ports.
Info: If multiple battery temperature sensors are installed,
ensure that they are all connected to the battery bank in the same
location. This will help balance the charging from each charger.
DC interconnect cables
(positive and negative)
Stacker
Cable
DC terminal insulators
(negative and positive)
Figure 2, ME-SSI Components Connected to Stacked Pair
3
Installation