36
【
Routine Maintenance
】
Please reference the Table 8.1 maintain content and maintenance interval.
Table
8.1 Maintenance checklist and interval
Check Item
Check Content
Maintain content
Maintenance
Interval
Inverter
output status
Statistically maintain the status of
electrical yield, and remotely monitor its
abnormal status.
NA
weekly
PV inverter
cleaning
Check periodically that the heat sink is
free from dust and blockage.
Clean periodically
the heat sink.
monthly
PV inverter
running status
Check that the inverter is not damaged
or deformed.
Check for normal sound emitted during
inverter operation.
Check and ensure that all inverter
communications is running well.
If there is any
abnormal
phenomenon,
replace the
relevant part.
monthly
PV inverter
Electrical
Connections
Check that AD, DC, and communications
cables are securely connected.
Check that PGND cables are securely
connected.
Check that cables are intact and there
are not wire aging.
If there is any
abnormal
phenomenon,
replace the cable
or re-connect it.
semiannually
【
Inverter warning and exception handling
】
When the inverter has an exception, its basic common warning and exception handling methods
are shown in the Table 8.2.
Table 8.2 Command troubleshooting measures
Alarm Name
Causes
Measures Recommended
Grid Over
Voltage
The grid voltage
exceeds its allowable
range.
1. If the alarm occurs accidentally, possibly the
power grid is abnormal accidentally. No extra
action is needed.
2. If the alarm occurs repeatedly, contact the
local power station. After receiving approval of
the local power bureau, revise the electrical
Grid Under
Voltage
AC Absent