Sungrow SG2K5TL, User Manual

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Electrical Connection
6
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6.3.3
Connecting Inverter to AC Grid
Make sure that none of the DC and AC cables to the inverter is live before you
start the electrical work.
Connect the inverter exclusively to TN or TT mains as the following procedures:
1. Disconnect AC circuit breaker and prevent it from reconnection inadvertently.
2. Plug AC connector into corresponding AC terminal underneath the inverter.
3. Connect “PE” cable to the grounding electrode. Where there are multiple inverters
in the PV power system, connect “PE” cables of all inverters and mounting frame of
PV arrays to the same copper bus bar, which may establish equipotential connection.
4. Connect phase cable and “N” cable to the AC circuit breaker.
5. Check whether cables are firmly secured.
No consuming load may be connected to power supply cables from the inverter to the
AC circuit breaker.
In addition, ensure that the ground cable is laid as far away from and not directly in
parallel to the power supply cable.
Danger to human life due to high voltage existing inside the inverter!
Do not turn on the AC side circuit breaker until all inverter electrical
connections have completed.
6.4
Connecting Inverter to PV Arrays
Lethal voltage exists!