Replacing SUN2000-(15KTL-50KTL) Series with 
SUN2000-(15KTL-50KTL)-M3 Series 
User Manual 
 
Copyright © Huawei Technologies Co., Ltd. 
 
Figure 6-5 Connecting the AC power cable 
 
 
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6.2.3 Installing DC Input Power Cables 
Precautions 
 
 
 
Before connecting the DC input power cables, ensure that the DC voltage is within the 
safe range (lower than 60 V DC) and that the DC switch on the SUN2000 is OFF. Failing 
to do so may result in electric shocks. 
 
When the SUN2000 is running, it is not allowed to work on the DC input power cables, 
such as connecting or disconnecting a PV string or a PV module in a PV string. Failing to 
do so may cause electric shocks. 
 
If no PV string connects to a DC input terminal of the SUN2000, do not remove the 
watertight cap from the DC input terminals. Otherwise, the IP rating of the SUN2000 will 
be affected. 
 
 
Ensure that the following conditions are met. Otherwise, the SUN2000 may be damaged, or 
even a fire may occur.