Rapid Shutdown - Huawei SUN2000 Series User Manual

SUN2000 Smart PV Optimizer
User Manual
Method 3: Disconnection Detection on the Local Device Commissioning
Screen
Step 1 Log in to FusionSolar app as an installer, choose Me > Commission Device, and
connect to the WLAN hotspot of the inverter.
Step 2 Log in to the device commissioning screen of the inverter as an installer, choose
Maintenance > Optimizer disconnection detection, and run the optimizer
disconnection detection. After that, rectify faults based on the detection result.
Figure 5-3 Optimizer disconnection detection
----End

5.2 Rapid Shutdown

When the output is disconnected or the inverter shuts down, the optimizer can
adjust the module output voltage to a safe range to ensure the safety of the
construction and O&M personnel as well as firefighters.
If optimizers are configured for all PV modules, the PV system can perform a rapid
shutdown to decrease the output voltage to below 120 V within 15s and to below
30 V within 30s.
Perform the following steps to trigger a rapid shutdown:
●
●
●
Issue 04 (2023-04-21)
NO TE
● The rapid shutdown function is supported only if optimizers are configured for all PV
modules.
● You are advised to periodically check whether the rapid shutdown function is normal.
Method 1: Turn off the AC switch between the inverter and the power grid.
Method 2: Turn off the DC switch on the inverter.
Method 3: Connect a switch to the DI and GND ports of the inverter to form a
circuit. (For details about which DI port is used, see the corresponding inverter
user manual.) The switch is turned on by default. Turn off the switch to
trigger a rapid shutdown.
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