SMA WB 3600TL - Manual (Page 72)

Messages SMA Solar Technology AG
72 WB36TL_50TL-IEN102011 Installation Guide
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 terminal 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 operator whether the
voltage can be adjusted at the feed-in
point, or whether he will 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 grid
operator 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 power supply line for
direct current.
• If this is a recurrent phenomenon,
check with the grid operator 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 grid
operator if it would agree to modify the
operating parameter.
Discuss the proposed parameters with the
SMA Serviceline.
Event no. Cause Corrective measures