Figure 5-6 Removing a cover
----End
5.4 Installing the AC Output Power Cable
Precautions
A three-phase AC switch needs to be congured outside the AC side of the
SUN2000. To ensure that the SUN2000 can safely disconnect from the power grid
under abnormal conditions, select an appropriate overcurrent protection device
according to local power distribution regulations.
Model Recommended Overcurrent
Protection Device Specications
SUN2000-50KTL-M0 125 A
SUN2000-60KTL-M0 125 A
SUN2000-65KTL-M0 125 A
● Do not connect loads between the inverter and the AC switch that directly
connects to the inverter. Otherwise, the switch may trip by mistake.
● If an AC switch is used with specications beyond local standards, regulations,
or the Company's recommendations, the switch may fail to turn o in a timely
manner in case of exceptions, causing serious faults.
Each inverter must be equipped with an AC output switch. Multiple inverters
cannot connect to the same AC output switch.
The SUN2000 is integrated with a comprehensive residual current monitoring unit
(RCMU) to distinguish fault current from residual current. Upon detecting that the
residual current exceeds the threshold, the SUN2000 immediately disconnects
from the power grid.
SUN2000-(50KTL, 60KTL, 65KTL)-M0
User Manual 5 Electrical Connections
Issue 11 (2024-02-02) Copyright © Huawei Technologies Co., Ltd. 46
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