User Manual 6 Electrical Connection
39
Fig. 6-3 Second PE terminal
The ground connection of this second PE terminal cannot replace the
connection of the PE terminal of the AC cables. Make sure the two PE
terminals are all grounded reliably. Sungrow shall hold no liability for any
possible consequences caused by ignorance of this warning.
Cable Connection
Fig. 6-4 Second PE connection
* Connection parts are not within the
scope of delivery
6.5 Communication Connection
6.5.1 Communication Overview
There are two communication waterproof connection terminal on the bottom of the
inverter. RS485 A/B terminals and RS485 interface are provided on the configuration
circuit board of the junction box. A 120Ω terminating resistor can be connected
between the A and B communication cable through the dip switch.
Item Name Description
A Screw
M6×12mm
B Lock washer -
C Washer -
D Cable socket -
E Yellow-green
cable*
-
*the cross-sectional area of the
yellow-green cable shall be exactly the
same with that of the PE cable of the AC
cable.
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