SMA SHP 125-US-20, Руководство по эксплуатации

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12 Troubleshooting SMA Solar Technology AG
Operating manual SHP-US-20-BE-en-10 63
Event number Message, cause and corrective measures
302
Active power limited AC voltage
The inverter has reduced its power due to a too-high grid voltage to ensure
grid stability.
Corrective measures:
• If possible, check the grid voltage and observe how often fluctuations
occur. If fluctuations occur frequently and this message is displayed often,
contact the grid operator and request approval to change the operating
parameters of the inverter. If the grid operator gives his approval, discuss
any changes to the operating parameters with Service (see Section 17,
page 94).
401
404
Grid fault
The inverter has disconnected from the utility grid. A stand-alone grid or a very
large change in the power frequency was detected.
Corrective measures:
• Check the grid connection for significant short-term frequency fluctuations.
501
Grid fault
The power frequency is not within the permissible range. The inverter has dis-
connected from the utility grid.
Corrective measures:
• If possible, check the power frequency and observe how often
fluctuations occur.
If fluctuations occur frequently and this message is displayed often,
contact the grid operator and request approval to change the operating
parameters of the inverter.
If the grid operator gives his approval, discuss any changes to the
operating parameters with the Service.