SUN2000 (8KTL-28KTL)
User Manual
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 2-13 Working modes
Figure 2-13 describes the operations shown in Table 2-6.
Table 2-6
The SUN2000 enters the standby mode when the external environment does
not meet the requirements for starting the SUN2000. In standby mode, the
SUN2000 continuously performs the self-check and enters the operating
mode once the operation requirements are met.
The standby mode involves four phases: initialization detection phase,
insulation resistance detection phase, sunlight detection phase, and no
sunlight phase.
If the SUN2000 receives a shutdown command or detects a fault after
startup in this mode, it enters the shutdown mode.
In operating mode,
The SUN2000 converts DC power from PV strings into AC power and
feeds the power to the power grid.
The SUN2000 always tracks the maximum power point to maximize the
PV string output.
The SUN2000 enters the shutdown mode after detecting a fault or a
shutdown command, and enters the standby mode after detecting that the
PV string output power does not meet the requirements for grid-tied
electricity generation.
The SUN2000 enters the shutdown mode after detecting a fault or receiving
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