5 Electrical Connection; Overview Of Electrical Connection - Sungrow SG3KTL-EC User Manual

5 Electrical Connection
Once the inverter is firmly attached to the appropriate location, it can be connected
into the PV power system.
Improper operation during the wiring process can cause fatal injury to the
operators or unrecoverable damages to the inverter.
Only qualified personnel can perform the wiring work.
Prior to any electrical connection, keep in mind that the inverter has dual power
supplies. It is mandatory for the technical personnel to wear personal protective
equipments during the electrical work: helmet, footwear and gloves.

5.1 Overview of Electrical Connection

Connecting inverter to the existing PV system includes connecting inverter to local
grid and connecting inverter to PV arrays. There may be communication connection
for monitoring if necessary.
All electrical connection should follow the National Wiring Rules of Standard AS/NZS
3000. The requirements in AS 4777.1 and AS/NZS 3000 indicate that a DC isolator
must be used before the inverter.
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