Sungrow SG2500HV-30, Системное руководство

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78
F Fa au ulltt
n na am me e
E Exxp plla an na attiio on n
F Fa au ulltt
sse evve erriittyy
M Me ea assu urre ess
L over-
temp
The reactor
temperature is
excessively high.
Major
1. Check, with a thermodetector,
whether the present ambient
temperature is within the permissible
range of the module.
2. Check that the air inlets of the
inverter and inverter are not obstructed.
Replace the filters when necessary.
3. Check, in the S Stto op p mode, whether
fans inside the module are clogged by
foreign materials.
Temp
control
cabinet
flt
Faults occur due
to excessively
high
temperature
inside the
control cabinet.
Major
1. Check the grid voltage, and inspect
whether the grid voltage harmonic is
normal.
2. Check whether the fans operate
normally.
3. Check the AC filtering system, and
inspect whether the AC filter capacitor
is damaged, for example, cracked.
Check whether the 3-phase current of
the capacitor is in balance when
necessary.
Vdc-Low
The DC input
voltage is
excessively low.
Major
1. Check, in the S Stto op p mode, whether
the DC voltage displayed on the LCD is
consistent with the voltage actually
measured.
2. In the event of inconsistency, check
whether the circuits on the DC side are
short-circuited or connected incorrectly.
Bus
undervo-
ltage
The DC bus
voltage is
excessively low.
Major
Refer to the measures for "Vdc-Low".
11 Troubleshooting System Manual