Battery Connection - Growatt SPF 5000T DVM-MPV User Manual

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
4kw
5kw
6kw
8kw
10kw
12kw
Please follow below steps to implement battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminalsize.
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!!
terminal. Otherwise, overheating may occur.
CAUTION!!
tightly.
CAUTION!!
positive (+) must be connected to positive (+) and negative (-) must be connected tonegative(-).
Battery Voltage
48V
48V
48V
48V
48V
48V
Do not place anything between the flat part of the inverter terminal and the ring
Do not apply anti-oxidant substance on the terminals before terminals are connected
Before making the final DC connection or closing DC breaker/disconnector, be sure
Wire Gage/min
m
0~1.0
mm²
30
mm²
40
mm²
50
mm²
60
mm²
75
mm²
90
Wire Gage/min
m
1.0~5.0
mm²
40
mm²
50
mm²
60
mm²
75
mm²
90
mm²
120
5