Loading The Dc Switch - Huawei SUN2000 Series User Manual

SUN2000-(196KTL-H3, 200KTL-H3, 215KTL-H3)
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User Manual

8.6 Loading the DC Switch

Prerequisites
If string backfeed, string connection in reverse polarity, or internal inverter fault is
displayed on the mobile app or remote monitoring system and the DC switch is
OFF, the DC switch of the inverter has been automatically turned off. In this case,
rectify the fault based on the alarm handling suggestions before turning on the
DC switch.
Procedure
Step 1 Loosen the nuts on the RESET buttons under the three DC switches.
Step 2 Press the RESET buttons until it cannot go further, and then tighten the nuts of
the RESET buttons.
Figure 8-17 Loading the DC switch (DC SWITCH 1 is used as an example)
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Issue 03 (2021-09-30)
NO TE
The DC switches can turn off automatically in the case of string current feedback, reverse
polarity on strings, and internal failures of inverters.
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