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WARNING: Shock Hazard
Installation must be performed with care due to high battery voltage in series.
CAUTION!!
Do not place anything between inverter terminals and the ring terminals.
Otherwise, overheating may occur.
CAUTION!!
Do not apply anti-oxidant substance on the terminals before terminals are securely
tightened.
CAUTION!!
Before making the final DC connection or closing DC breaker/disconnect, be sure
positive (+) must be connect to positive (+) and negative (-) must be connected to negative (-).
Reverse polarity connection on battery will damage the inverter.
AC Input/Output Connection
CAUTION!!
Before connecting to AC input power source, please install a
separate
AC breaker between the
inverter and the AC input power source. This will ensure that the inverter can be safely disconnected during
maintenance and fully protected from over-current. The recommended spec of AC breaker is 32A for
SPCIII4000-24 and 50A for SPCIII6000-48.
CAUTION!!
There are two power terminal blocks with
“IN” (Input) and “OUT” (Output) markings. DO NOT
mistakenly connect to the wrong connectors.
WARNING!
All wiring must be performed by a qualified personnel.
WARNING!
It’s very important for system safety and efficient operation to use appropriate cable size for AC input
connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires
Model
Gauge
Cable (mm
2
)
Torque Value
SPCIII4000-24
12 AWG
4
1.2 Nm
SPCIII6000-48
10 AWG
6
1.2 Nm
Please follow these steps to implement AC input/output connection:
1.
Before making AC input/output connection, be sure to turn off AC breaker or disconnector first.
2.
Remove insulation sleeves for about 10mm for the five screw terminals.
3.
Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be
sure to connect the grounding wire (
)
first.
→ Ground (yellow-green)
L
→ LINE (brown or black)
N
→ Neutral (blue)
WARNING:
Be sure that the AC power source is disconnected before attempting wire connections.
