Working Principles; Circuit Diagram; Working Modes - Huawei SUN2000-250KTL Series User Manual

SUN2000-(250KTL, 280KTL, 300KTL, 330KTL) Series
User Manual

2.5 Working Principles

2.5.1 Circuit Diagram

The SUN2000 receives inputs from 28 PV strings. The inputs are grouped into 6
MPPT circuits inside the SUN2000 to track the maximum power point of the PV
strings. The DC power is converted into three-phase AC power through an inverter
circuit. Surge protection is supported on both the DC and AC sides.
Figure 2-9 Schematic diagram

2.5.2 Working Modes

The SUN2000 can work in Standby, Operating, or Shutdown mode.
Issue 02 (2022-12-20)
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● The PV connection indicator and the grid connection indicator preferentially indicate
environmental faults.
● Local maintenance refers to operations performed after a USB flash drive, WLAN
module, or USB data cable is inserted into the USB port of the SUN2000. For example,
import and export data using a USB flash drive, or connect to the app using a WLAN
module or USB data cable.
● If the alarming and the local maintenance happen concurrently, the alarm/maintenance
indicator shows the local maintenance state first. After the USB flash drive, WLAN
module, or USB data cable is removed, the indicator shows the alarm state.
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