ROUTINE MAINTENANCE
ROUTINE MAINTENANCE
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9.2.2.2 Power off maintenance
9.2.2. Routine maintenance
9.2.2.1 Power on maintenance
Maintenance items
Maintenance requirements
Time
1.Battery
2.System
3.PCS
Exterior
Battery capacity
calibration
Once 6 months
Complete discharge-charge-discharge cycle
Battery data analysis
Once 6 months
Analyze the recorded BMS data (completed by
Alpha employees)
Check the switch
function and trip
function of the
high-voltage control box
circuit breaker
Once 6 months
Once 6 months
Once 6 months
Once 6 months
Once 6 months
Once 6 months
Once 6 months
1. The function of the circuit breaker is
normal; There should be no voltage when the
circuit breaker is disconnected. Use a
multimeter to detect the DC voltage gear.
2. Tripping function detection: When the
circuit breaker is closed, use the host
computer to send a command, and the circuit
breaker normally trips.
Whether the insulation
resistance of the DC side
of the system is within a
reasonable range
Circuit breaker
maintenance
Security
When the system is in normal operation,
confirm whether the BMS has reported
insulation failure. If there is no fault, the
insulation resistance is within the reasonable
range.
Check the contactors (auxiliary switches or
micro switches) in turn every year and ensure
their normal operation;
Check operating parameters (pay special
attention to voltage and insulation)
Check the LCD screen;
Simulate the power off and check whether the
communication signal is available during the power
off
Check if the inverter is damaged or deformed
Operating
status
Environment
Check whether the inverter makes abnormal
noises during operation; Check whether all
components are normal during the operation of
the inverter; Check the temperature of the
inverter shell and use a thermal imager to monitor
the temperature of the system
Check whether the air inlet/outlet is normal;
Check the humidity and dust around the inverter,
and ensure that the filter device at the air inlet is
working properly
Maintenance items
Maintenance requirements
Time
1.Battery
Fixing the battery rack
Once 6 months
The bracket is fastened to the bottom fixing place
Battery rack grounding
Once 6 months
Use a multimeter for grounding test
Battery fixed
Once 6 months
Once 6 months
The battery is fastened to the battery holder
Copper row fixed
Check that the copper bar is well fixed.
Please use the same type of copper bar If
you need to replace it.
Battery label
Insulation protection
Once 3 months
Once 3 months
Replace with the same label
Protective cover on battery rack
Battery grounding
High control box
grounding
Once 3 months
Once 3 months
Use a multimeter for grounding test
Use a multimeter for grounding test
Junction box grounding
Once 3 months
Use a multimeter for grounding test
Check lightning
protection device,
DC fuse
Lightning
protection
device
The connection
should be firm, the
interface should not
be oxidized, and the
protection action
should not be
triggered under
normal working
conditions
Once 12
months
Once 12
months
Test PCS switch,
contactor, circuit
breaker, protection
function
Switches,
circuit
breakers,
contactors
PCS switches,
contactors, circuit
breakers, and
protection
functions are
normal
