Sungrow ST2752UX, Инструкция по эксплуатации и обслуживанию

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58
Fault name
Triggering
condition
Recovery
condition
Corrective measures
AC Over-
current
1. The peak phase
current of the
inverter unit is 1.5
larger than the
rated current for
3ms.
2. Open-loop. If any
three-phase peak
current of the
inverter unit is
larger than 1.5In in
off-grid mode for
184us, the machine
will stop for
protection.
The trigger
condition of
this fault
disappears
continuously
for 4min
without other
faults.
Generally, the fault will be cleared
automatically and no further
operation is required. If the fault
repeatedly occurs, please contact
SUNGROW.
Ambient
Temperatur-
e Abnormal
The ambient
temperature is
higher than 63 ℃ , or
the DC cabinet
temperature is
higher than 73 ℃ for
40ms.
The ambient
temperature
is lower than
50 ℃ and the
DC cabinet
temperature
is lower than
65 ℃ for
200ms.
Generally, the machine will
reconnect to the grid when the
internal temperature returns to
normal. If the fault repeatedly
occurs:
1. Check whether the ambient
temperature of the inverter is too
high.
2. Check whether the machine is
placed in a well-ventilated place.
3. Check whether the machine is
exposed to direct sunlight. Shield it
if so.
4. Check whether the fan is running
properly. Replace the fan if
necessary.
5. If the fault is not caused by the
foregoing reasons and still exists,
please contact SUNGROW.
Hardware
Fault
In off mode, the
absolute value of
the inverter DC
The trigger
condition of
this fault
Generally, the fault will be cleared
automatically and no further
operation is required. If the fault
5 Troubleshooting Operation & Maintenance Instruction