5 Electrical Connections
5.1 Precautions
When exposed to sunlight, the PV arrays supplies DC voltage to the SUN2000.
Before connecting cables, ensure that the two DC switches on the SUN2000 are
OFF. Otherwise, the high voltage of the SUN2000 may result in electric shocks.
● The equipment damage caused by incorrect cable connections is beyond the
warranty scope.
● Only certied electrician can perform electrical terminations.
● Wear proper PPE at all time when terminating cables.
● To prevent poor cable connection due to overstress, it is recommended that the
cables be bent and reserved, and then connected to the appropriate ports.
The cable colors shown in the electrical connection diagrams provided in this chapter are
for reference only. Select cables in accordance with local cable
specications (green-and-
yellow cables are only used for grounding).
5.2 Preparing Cables
The SUN2000 supports MBUS and RS485 communication modes.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
5 Electrical Connections
Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 40
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