User Manual 32
9
Utility grid
disconnected
inverter detected grid voltage
failed
⒈
If it happens occasionally, it belongs to the short-time
abnormality of the power grid, the inverter will return to normal
operation after detecting that the power grid is normal, and there
is no need to deal with it.
⒉
If it cannot be recovered for a long time, please confirm:
①
whether the AC circuit breaker is disconnected
②
whether the AC terminal or fuse is in good contact
③
whether the power supply line is normal
If this fault is still being shown, contact the service.
10
Grid voltage
exceeds the
permissible range
grid voltage exceeds the
Safety regulations
⒈
If it happens occasionally, it belongs to the short-time
abnormality of the power grid, the inverter will return to normal
operation after detecting the normal power grid, and there is no
need to deal with it.
2. In case of frequent occurrence but automatic recovery, please
confirm if the grid voltage is outside the permissible range due to
local grid conditions, try to modify the values of the monitored
operational limits after informing the electric utility company first.
⒊
If it cannot be recovered for a long time, please confirm:
①
whether the AC circuit breaker is disconnected
②
whether the AC terminal is in good connection
③
whether the power supply line is normal
④
whether the AC cable wiring (such as wire length and wire
diameter) complies with the user manual guidance
⑤
whether the safety regulation settings are normal
11
Grid frequency
exceeds the
permissible range
grid frequency exceeds the
Safety regulations
⒈
If it happens occasionally, it belongs to the short-time
abnormality of the power grid, the inverter will return to normal
operation after detecting the normal power grid, and there is no
need to deal with it.
2. In case of frequent occurrence but automatic recovery, please
confirm if the grid voltage is outside the permissible range due to
local grid conditions, try to modify the values of the monitored
operational limits after informing the electric utility company first.
⒊
If it cannot be recovered for a long time, please confirm:
