ROUTINE MAINTENANCE
ROUTINE MAINTENANCE
30
31
Check if communication
is normal
PCS
communication
The monitoring
software can
communicate with
the PCS, and the
status of the PCS can
be displayed normally
in the monitoring
software
Once 6
months
Check the internal
temperature of the
PCS, including battery
temperature and
module temperature
Once 6
months
Work status, view
history
Each PCS in the
monitoring software
is in a normal
working state, no
fault state
PCS has no abnormal
conditions
Once 6
months
Read error messages
and warnings, export
failure records
Visually check the AC
switch
PCS AC switch
PCS internal
temperature
PCS working
status
The PCS changes
from a normal
working state to a
fault state, and the
records are exported
in the monitoring
screen
Once 6
months
AC switch is normal
Once 6
months
Visually check the fan
Check the PCS
startstop, switch
control and other
functions, the control
function should be
normal.
PCS fan
Function test
The fan is operating
normally
Functioning normally
Once 6
months
Once 2 years
Once 2 years
Check DC side
over/under voltage,
over current, short
circuit, grounding
protection, and AC
side over/under
voltage, over current,
overload, over
temperature,
three-phase unbalance
and other protection
functions
Protective
function
The protection
function should
operate normally
PCS fault
record
9.2.1.2 Power off inspection
When the equipment has been running for a certain period of time, it is necessary to
perform power outage maintenance on the equipment. Power outage maintenance
includes: power outage inspection, maintenance work, etc.
Check items
Check content
Time
Notes
1.Battery
Inspection
requirements
Check whether the
wiring harness between
batteries is tightly
locked
Connection
between
batteries
Connection
between the
battery and
highvoltage
control box
Once 6
months
Check whether the
wiring harness between
the Battery and the
highvoltage control box
is locked
All locked, not loose
All locked, not loose
Once 6
months
Check whether the
wiring harness between
the highvoltage control
box and the junction
box is locked
All locked, not loose
Once 6
months
Once 6
months
Check whether the
connection terminal of
the battery power cable
is damaged, deformed,
or has overheating
traces; whether the
battery terminal is
insulated and protected
Battery
connection
The connection
terminal and the base
are normal, without
damage or
deformation, and no
traces of overheating;
All red and black
terminal Amphenol
connectors are
complete
Check whether the
connecting terminal of
the power line of the
highvoltage control box
is damaged, deformed,
and whether there are
traces of overheating;
whether the terminal of
the high-voltage control
box is insulated and
protected
High voltage
control box
connection
The connection
terminal and the base
are normal, without
damage or
deformation, and no
traces of overheating;
All red and black
terminal Amphenol
connectors are
complete
Once 6
months
Connection
between
highvoltage
control box and
junction box
Check whether the
wiring harness between
the combiner cabinet and
the PCS is locked and
whether the temperature
is within the standard
range
All are locked, no
looseness. The marks
on all the power
connection screws
are not misaligned
Once 6
months
Connection
between
junction box
and PCS
