SMA SB 3000TL-20 Installation - Manual (Page 73)

SMA Solar Technology AG Messages
Installation Guide SB30TL_40TL_50TL-IA-IEN120231 73
3 < Grid fault >
The average grid voltage over 10 minutes
is no longer within the permissible range.
This can have the following causes:
• The grid voltage at the point of
connection of the inverter is too high.
• Grid impedance at the connection
point of the inverter is too high.
The inverter disconnects to assure
compliance with the voltage quality of the
grid.
• Check the grid voltage at the point of
connection of the inverter:
If due to local grid conditions the grid
voltage exceeds the configured limiting
value, ask the utility provider whether the
voltage can be adjusted at the feed-in
point, or whether it would agree to a
modification of the limiting value for
voltage quality monitoring.
If the grid voltage is continually within the
acceptable range, and this error is still
displayed, contact the SMA Serviceline.
4 < Grid fault >
The inverter has left the grid parallel
operation and for safety reasons
interrupted feeding-in. • Check the power supply line for
strong, short-term frequency
variations.
5 < Grid fault >
The grid frequency is not within the
permissible range. For safety reasons, the
inverter disconnects itself from the grid. • If possible, check the grid frequency
and observe how often major
deviations occur.
If repeated frequency variations occur and
as a result this error occurs, ask the utility
provider if it would agree to modify the
operating parameter.
Discuss the proposed parameters with the
SMA Serviceline.
6 < Grid fault >
The internal inverter monitoring has
detected an impermissibly high proportion
of direct current in the grid current. • Check the grid connection for direct
current.
• If this is a recurrent phenomenon,
check with the utility provider
whether it is possible to raise the
limiting value of monitoring.
7 < Frq. not permitted >
The grid frequency has left the allowable
range. For safety reasons, the inverter
disconnects itself from the grid. • As far as possible, check the grid
frequency and observe how often
major fluctuations occur.
If repeated frequency variations occur and
as a result this error occurs, ask the utility
provider if it would agree to modify the
operating parameter.
Discuss the proposed parameters with the
SMA Serviceline.
Event no. Display message and cause Corrective measures