Connecting Dc Input Power Cables - Huawei SUN2000 Series User Manual

SUN2000-(90KTL-100KTL) Series
User Manual
Ensure that there are no cable residues, scraps, or conductive dusts in the maintenance
compartment.
----End

5.5 Connecting DC input power cables

Precautions


Ensure that the following conditions are met. Otherwise, the SUN2000 will be damaged, or
even become a fire hazard.


Before connecting the DC input power cable, ensure that the DC voltage is within the safe
range (lower than 60 V DC) and that the two DC switches on the SUN2000 are OFF.
Failing to do so may result in electric shocks.
When the SUN2000 is grid-tied, it is not allowed to work on DC circuit, such as
connecting or disconnecting a PV string or a PV module in a PV string. Failing to do so
may cause electric shocks or arcing (which may further cause fire).
The open-circuit voltage of each PV string is always lower than or equal to 1500 V DC.
The positive and negative terminals of a PV string connect to corresponding positive and
negative DC input terminals of the SUN2000.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5 Electrical Connections
40