Sungrow SG2500HV-30, Системное руководство

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81
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
DC-SPD
flt
The SPD on the
DC side of the
module is faulty.
Major
The state window of the SPD is as
follows:
1. When the window colour is turned
red from green, it indicates that the SPD
is damaged (perhaps, due to
thunderstorms). In this case, measure
the AC and DC parameters, including
positive and negative pole voltages to
ground, and replace the SPD when the
parameters recover to normal value.
2. When the window is in normal colour,
the fault may be caused by poor
contact between the SPD and its base.
In this case, reinstall the SPD to ensure
good contact.
AC SPD
flt
The SPD on the
AC side of the
module is faulty.
Major
1. Refer to the measure for "DC-SPD flt".
2. Check whether the micro circuit
breaker connected in series to the SPD
is disconnected.
3. If the micro circuit breaker is
disconnected, measure the AC and DC
parameters. If the values measured are
normal, reconnect the micro circuit
breaker.
Vdc-high
The DC voltage
of the module
exceeds the
protective
threshold.
Major
1. Disconnect the DC switches of the
module, and check whether the open-
circuit voltage of the PV array is normal.
If it is abnormal, the alarm may result
from PV array configuration.
2. Ensure that the LV side of the
transformer is connected in the Y type,
and the neutral point is not grounded.
3. Check, in the S Stto op p mode, whether
the DC voltage displayed on the LCD is
consistent with the voltage actually
measured.
System Manual 11 Troubleshooting