IN0016 Revision 12 Part # 004573 – 17 of 22
POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
Shunts
The supplied shunt that is wired between the battery bank and the three SP PRO inverters must
be configured on L1, L2 and L3 SP PRO as follows:
Name = System SoC
Max Voltage = 100mV
Max Current = 800A
Note1: In
System SoC
mode, shunt currents are displayed with a sign; a
positive (+) number means charging and a negative (-) number means
discharging.
Note2: Only the
System SoC
shunt is used to accumulate the battery
SoC. Currents in all other shunts are excluded from the SoC calculation,
they are used to monitor other power source inputs. This allows the three
SP PRO inverters to track the battery SoC together.
If an additional shunt is required for monitoring battery charge current from a renewable DC
charging source (such as DC coupled PV solar) then this shunt must be connected to shunt 2
input on each of the L1, L2 and L3 phase expansion cards. The configuration setting for shunt 2
is different from that of Shunt 1. In this case each inverter only measures its share of the
charge current being 1/3 of the total charge current. This allows the DC coupled renewable
energy to be exported evenly between the three phase.
Name = Solar
Max Voltage = mV rating of the shunt
Max Current = 1/3 of the current rating of the shunt
For example if the Solar current shunt is a 200A 75mV shunt, the settings
for shunt 2 are:
Max Voltage = 75mV
Max Current = 67 A (=1/3 of 200A)
No extra shunt is required for AC coupled PV solar as this is measured via the SP PRO.
When all the current shunts have been installed and configured then each of the used current
shunts in each of the SP PRO inverters must be zero set (Service Settings in SP LINK).
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