25
26
Figure 4-4-4 AC Output Wiring
4.4.5 Earthing
Figure 4-4-5 PE copper in the inverter
Inverter must be earthing well for safety; Please make sure of the connection
between PE in power distribution cabinet and PE copper in the inverter good; and
make sure the earthing cable more than 16mm2 and the earthing resistance must
satisfy the demand of IEC standard.
All wiring into the channel at the bottom of the inverter to be all the wiring is
completed, the connection port must be sealed with dust cotton, to prevent dust
from entering the inside of the inverter.
4.5 Communication
The inverter of ATESS PCS series has various communication methods. When the user
needs to monitor the operating status of DC power generation system, we provide
single-machine and multi-machine control programs, and diversified communication
interfaces for customer's selection.
4.5.1 RS485 communication
The inverter, through RS485 tandem, is connected with the PC for communication
through RS485/RS232 adaptor. Inside the PC, a multi-machine monitoring software
ShineNet independently developed by the ATESS is monitoring in real time the
operating status of all inverters, as shown in Figure 4-5-1. The RS485 wire should be
less than 1000m.
Figure 4-5-1 RS485 Multi-machine Communication
WARNING
Caution, risk of fire hazard
There is usually no need to connect DC input terminal with
earth for Silicon solar cell;
But for thin-film solar cell, if one of DC input terminal need to
be connected to earth, GFDI device must be used for safety.
