Dyness PowerRack HV4, User Manual, Page: 25 / 27

PowerRack HV4 User Manual
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4.2.1.3 Change a new BDU. Then fix four screws.
4.3 Battery Maintenance
Danger: The maintenance of battery only can be operated by professional and
authorized person.
Danger: you need turn off the battery system firstly when you do some maintenance
items.
4.3.1 Voltage Inspection:
[Periodical Maintenance] Check the voltage of battery system through the monitor
software. Check whether the system voltage is normal or not. For example: Check Single
cell’s voltage is out of rated range or not.
4.3.2 Voltage Inspection:
[Periodical Maintenance] Check the SOC of battery system through the monitor
software. Check the SOC of battery string is normal or not.
4.3.3 Cables Inspection:
[Periodical Maintenance] Visual inspect all the cables of battery system. Check the
cables have broken, aging, getting loose or not.
4.3.4 Balancing:
[Periodical Maintenance] The battery system will become unbalanced if have not be
charged fully for a long time. Solution: Preform the balancing maintenance (fully charged)
every 3 month. Generally, this maintenance progress needs to be completed when
external devices such as the monitor software and battery and inverter are in good
communication.
4.3.4 Output Relay Inspection:
[Periodical Maintenance]
Under low load condition (low current), control the output
relay OFF and ON to hear the relay has click voice, that’s mean this relay can off and on
normally.
5 Storage Recommendations
●
For long-term storage (more than 3 months), the battery cells should be stored in the
environment: temperature range of 5~45
℃
, relative humidity <65% and contains non-
corrosive gas .
●
The battery module should arranged in range of 5~45
℃
, dry, clean and well
ventilated environment. The battery should be charged to 50~55% SOC before
storage.
●
It is recommended to active the battery system (discharge and charge) every 3
months, and the longest duration of storage without charge and discharge cannot
exceed 6 months.