Replacing SUN2000-(15KTL-50KTL) Series with 
SUN2000-(15KTL-50KTL)-M3 Series 
User Manual 
 
Copyright © Huawei Technologies Co., Ltd. 
 
Indicates the SUN2000 
operating information. 
Indicates the serial 
number. 
SUN2000 WiFi login QR 
code 
Scan the QR code to 
connect to the Huawei 
SUN2000 WiFi network. 
 
2.4 Working Principles 
2.4.1 Circuit Diagram 
A SUN2000 can connect to a maximum of eight PV strings and has four MPPT circuits inside. 
Each MPPT circuit tracks the maximum power point of two PV strings. The SUN2000 
converts DC power into single-phase AC power through an inverter circuit. Surge protection 
is supported on both the DC and AC sides.