Sungrow SG2K5TL, Руководство пользователя

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Electrical Connection
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6.3
Connecting Inverter to AC Grid
6.3.1
AC Side Requirements
Only after receiving prior approval from the local grid company as required, should
you connect the inverter to the grid.
Prior to connecting to the utility grid, verify whether the grid voltage and frequency are
within the range of inverter output parameters, referred to “Appendix”. Otherwise
consult local grid company for solution.
AC Side Circuit Breaker
An independent two-pole circuit breaker for each inverter must be installed at the
output side to ensure that the inverter can be securely disconnected under load.
Inverter Type Specification Recommended of AC Circuit Breaker
SG2K5TL-31 20A
SG3KTL-31 25A
SG4KTL-31 32A
There are some points that are not allowed for the inverter:
z
It is not allowed for several inverters to use the same circuit breaker.
z
It is not allowed to connect loads between inverter and circuit breaker.
Residual Current Device
With an integrated universal current-sensitive residual current monitoring unit inside,
the inverter is able to distinguish the fault currents from normal capacitive leakage
currents. The inverter will disconnect immediately from mains as soon as a fault
current of more than limit value has been detected.
However if an external RCD or residual current breaker is mandatory, the switch must
trigger at a failure current of 100mA or higher.
Requirements of Inverter Parallel Grid Connection
If several inverters are operated in parallel connection to grid, there are different
requirements according to different scenarios.