Sungrow SG30KU, Руководство пользователя

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6 Electrical Connection User Manual
36
The cross-section of the AC cable conductor must be sized in order to prevent
accidentally disconnections of the inverter from the grid due to high impedance of
the cable that connects the inverter to the power supply point.
The table shows the maximum length of the cable conductor based on the
cross-section.
Cross-section of AC cable conductor
Maximum length of the
cable conductor(m)
10mm² 30m
16 mm²
50m
Connecting Inverter to AC Grid
When connecting the inverter to the grid, either a wye connection (three phase lines
and a neutral line) or a delta connection (three phase lines) can be used.
In either connection type, the ground wire connection is mandatory.
Danger to human life due to high voltage existing inside the inverter!
Make sure that all the DC and AC cables to the inverter are not live before
you start the electrical work.
To prevent electrocution hazards, all the connection operations must be
carried out with the AC disconnect switch on the right side of the inverter
open and locked out.
For all models, connection to the AC terminal block is made by pulling conductors
through a raceway connected to the AC cable knockout.
Step 1
Disconnect AC circuit breaker and prevent
it from reconnection inadvertently.
Step 2
Loose the six screws on the lower combiner
unit and remove the cover of the combiner
unit.
Step 3 Remove the threaded plastic plug from the
AC cable knockout and replace with a
conduit hub sized to fit the required wiring
and raceway.
Step 4
Strip off AC cables as the following
indication.