5
Battery Connection
CAUTION:
For safety operation and regulation compliance, it‟s requested to install a separate DC over-
current protector or disconnect device between battery and inverter. It may not be requested to have a
disconnect device in some applications, however, it‟s still requested to have over-current protection
installed. Please refer to typical amperage in below table as required fuse or breaker size.
WARNING!
All wiring must be performed by a qualified person.
WARNING!
It's very important for system safety and efficient operation to use appropriate cable for
battery connection. To reduce risk of injury, please use the proper recommended cable and terminal
size as below.
Recommended battery cable and terminal size:
Model
Battery Voltage
Wire Gage/min
4kw
48V
1*2AWG
5kw
48V
1*1AWG
6kw
48V
2*3AWG
8kw
48V
2*2AWG
10kw
48V
2*1AWG
12kw
48V
3*2AWG
Please follow below steps to implement battery connection:
1.
Assemble battery ring terminal based on recommended battery cable and terminal size.
2.
Connect all battery packs as units requires. It‟s suggested to connect at least 200Ah capacity
battery for 4KW~6KW model and at least 400Ah capacity battery for 8KW~12KW model.
3.
Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the
bolts are tightened with torque of 2-3 Nm. Make sure polarity at both the battery and the
inverter/charge is correctly connected and ring terminals are tightly screwed to the battery
terminals.
WARNING: Shock Hazard
Installation must be performed with care due to high battery voltage in series.
CAUTION!!
Do not place anything between the flat part of the inverter terminal and the ring
terminal. Otherwise, overheating may occur.
CAUTION!!
Do not apply anti-oxidant substance on the terminals before terminals are connected
tightly.
CAUTION!!
Before making the final DC connection or closing DC breaker/disconnector, be sure
positive (+) must be connected to positive (+) and negative (-) must be connected to negative (-).
