Delta Electronics MVF2000 Series, Руководство по эксплуатации продукта

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No. Failure item
System
default
operation
Failure definition Solutions Remarks
56
Auto Bypass
Transfer Failure
Trip
Bypass cabinet switch did
not operate correctly
1. Check whether the bypass
cabinet switch is normal.
2. Check whether the internal
wiring is firm and correct.
57
Auto Bypass
Condition is not
Satisfied
Trip
The operation status of
MVD does not meet the
bypass condition
None
58 External Fault Trip
The external digital signal
is closed
Check external fault signal
System
operation is
configurable
59
Power Cell DC
BUS Under
Voltage
Alarm
The DC bus voltage is
higher than 300V, but
lower than 580V
1. Check whether the input
high voltage is lower than the
minimum allowed value.
2. Check whether the cell
three-phase incoming line is
loosen.
3. Check whether the fuse is in
good condition.
60
Power Cell Over
Temperature
Trip
Check the temperature of
the cooling heat sink near
IGBT. If it is higher than
designed value, the
normally-closed contact
of the temperature sensor
switch will be
disconnected.
1. Check whether the ambient
temperature exceeds the
allowed value.
2. Check whether the cooling
fan on the top of the cabinet
works normally.
3. Check whether the inlet air
filter is clogged.
4. Check whether the MVD is in
overload operation for a long
time.
5. Check whether the cell
temperature relay works
normally.
System
operation is
configurable
61
Power Cell IGBT
Driver Fault
Trip IGBT has a failure
1. Check whether the cell
failure indicator indicates
normally.
System
operation is
configurable
62
Power Cell Input
Phase Loss
Alarm
One of input three phases
loss
1. Check whether the cell
three-phase incoming line is
loosen.
2. Check whether the fuse is in
good condition.
3. Check the input voltage
System
operation is
configurable,
Detected in PL,
Not detected in
PU