11
The user may connect the batteries in parallel in order to increase the total battery
capacity without changing the battery voltage. The example below shows parallel
connection of multiple 12V batteries. While the total capacity is times by the
number of battery, the terminal voltage remains 12V.
2.4 PV (solar) string
Selection of PV panel
PV string is a connection of PV panels whose output voltage and current vary under
different illumination. And just like battery, the PV panel can be connected in either
series or parallel as per needed. Please consult the supplier of PV panel so that the
operational voltage and current fall within the allowed range of the inverter as set
out in the specification.
Please do not use PV panel which requires one terminal connected to
ground (e.g. thin-film panel).
Connect the PV strings
As the PV string generates power as long as illumination exists, a
circuit breaker shall be installed between the PV string and inverter so
that the power from PV string can be switched off when needed (e.g.
regular maintenance).
To ensure better contact and reliability, ring terminal shall be fit
on the cables from PV string before connecting to the inverter.
The recommended size of ring terminal is
Model
Wire Gauge
Ring Terminal
Cable
mm
2
Dimensions
D(mm)
L(mm)
POWERBACK
PB1000S/2000S
1*10AWG
5.16
5.3
19.8
PowerBack
