Huawei SUN2000-5KTL-M1 - Rapid Shutdown

D Rapid Shutdown
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If optimizers are congured for some PV modules, the rapid shutdown function is not
supported.
When all PV modules connected to the solar inverter are congured with
optimizers, the PV system shuts down quickly and reduces the output voltage of
the PV string to below 30 V within 30 seconds.
Perform the following step to trigger rapid shutdown:
● Method 1: To enable the rapid shutdown function, you need to connect the
access switch to pins 13 and 15 of the SUN2000 communications terminal.
The switch is closed by default. The rapid shutdown is triggered when the
switch changes from closed to open.
● Method 2: Turn o the AC switch between the solar inverter and the power
grid. (If the inverter supports the o-grid function and O-grid mode is
enabled by choosing Settings > Feature parameters on the home screen,
turning o the AC switch will not trigger a rapid shutdown.)
● Method 3: Set the DC switch at the bottom of the SUN2000 to OFF. (Turning
o an extra switch on the DC side of the SUN2000 will not trigger rapid
shutdown. The PV string may be energized.)
● Method 4: If AFCI is enabled, the inverter automatically detects arc faults,
triggering a rapid shutdown.
SUN2000-(3KTL-10KTL)-M1 Series
User Manual D Rapid Shutdown
Issue 17 (2024-01-12) Copyright © Huawei Technologies Co., Ltd. 127