10
Ring terminal:
7.
Battery Connection
CAUTION:
Before connecting to batteries, please install
separately
a DC circuit
breaker between inverter and batteries.
NOTE 1:
Please only use sealed lead acid battery, vented and Gel battery. Please check
maximum charging voltage and current when first using this inverter. If using Lithium
iron or Nicd battery, please consult with installer for the details.
NOTE 2:
Please use 60VDC/300A circuit breaker.
NOTE 3:
The overvoltage category of the battery input is II.
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 size as below.
Model
Typical
Amperage
Cable
Size
Ring Terminal
Torque
Value
Cable mm
2
Dimensions
D (mm)
L (mm)
SP20K Premium
50A
8AWG
8
5.3
23.8
2.0~2.4Nm
Please follow below steps to implement battery connection:
Step 1: Check the nominal voltage of batteries. The nominal input voltage for inverter is
48VDC.
Step 2: Insert the ring terminal of battery wires flatly into battery connector according to
polarities indicated on terminal block and tighten the terminal screws.
RED cable to the positive terminal (+)
BLACK cable to the negative terminal (-)
WARNING!
Wrong connections will damage the unit permanently.