Messages
SMA
Technologie AG
60
SB40TL_50TL-IEN081211
Installation Guide
2
< Grid undervoltage >
The grid voltage is outside the permitted
range. The fault can have the following
causes:
•
Grid disconnected
•
AC cable damaged
•
The grid voltage at the connection
point of the Sunny Boy is too low
For reasons of safety, the Sunny Boy
disconnects itself from the grid.
•
Check the line circuit breaker
triggering.
•
Test the grid voltage and grid
connection on the Sunny Boy.
If the grid voltage lies outside the
acceptable range because of local grid
conditions, ask the grid operator if the
voltages can be adjusted at the feed-in
point, or if they agree to changes in the
values of the monitored operational
limits.
If the grid voltage is within the
acceptable range, but the error is still
displayed, contact the SMA Technical
Service Line.
3
< Voltage rise protection >
The average grid voltage over 10 minutes
is no longer within the permissible range.
This can be due to either of the following
reasons:
•
The grid voltage at the connection
point of the Sunny Boy is too high.
•
The grid impedance at the connection
point of the Sunny Boy is too high.
The Sunny Boy disconnects to allow
compliance with the voltage quality of the
grid.
•
Test the grid voltage at the
connection point of the Sunny Boy.
If, due to the local grid conditions, the
grid voltage exceeds the threshold
configured, ask the utility operator
whether the voltage at the feed-in point
can be adjusted, or whether they agree
to an alteration of the threshold for
voltage quality monitoring.
If the grid voltage is continually within the
acceptable range, but the error is still
displayed, contact the SMA Technical
Service Line.
4
< Stand-alone grid >
The Sunny Boy is no longer in grid-parallel
operation and has stopped feeding for
safety reasons.
•
Check the grid connection for
extreme, short-term fluctuations in
frequency.
No
Cause
Remedy
Summary of Contents for SUNNY BOY 4000TL
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