SMA SB 2500TL-21 Installation - Manual (Page 67)

SMA Solar Technology AG Troubleshooting
Installation Manual SB25-30TLST-21-IA-en-13 67
202 to
205 Grid fault The mains voltage has fallen below the permissible range. This
error can have the following causes:
• Electricity grid disconnected
• AC cable damaged
• The mains voltage at the termination point of the inverter is
too low.
The inverter disconnects itself from the electricity grid for safety
reasons.
Corrective measures:
• Check whether the miniature circuit-breaker has tripped.
• Check the mains voltage and grid connection on the
inverter.
If the mains voltage is outside the permissible range due to
local grid conditions, ask your network operator if the
voltage can be adjusted at the feed-in point or if it would
be acceptable to change the monitored operating limits.
If the mains voltage is within the tolerance range, yet this
error is still displayed, contact the SMA Service Line.
301 Grid fault The 10-minute-average mains voltage is no longer within the
permissible range.
This can be caused by one of the following:
• The mains voltage at the termination point of the inverter is
too high.
• The grid impedance at the termination point of the inverter
is too high.
The inverter disconnects to assure compliance with the power
quality of the electricity grid.
Corrective measures:
• Check the mains voltage at the termination point of the
inverter:
If, due to local grid conditions, the mains voltage exceeds
the configured threshold, ask the network operator
whether the voltage can be adjusted at the feed-in point,
or whether it would be acceptable to modify the threshold
for power quality monitoring.
If the mains voltage is permanently within the tolerance
range and this error is still displayed, contact the
SMA Service Line.
Event no. Message Cause and corrective measures