Tower ESS Unit User Manual
24
6
The battery has no
voltage output, but
“
POWER ON”/“POWER
WAKE” are on
The relay in BDU is faulty
Replace a new BDU directly
7
When the battery is
connected to the
inverter, the DC breaker
trips automatically
The circuit between the
battery and the inverter has
a short circuit point
Check whether there is a
short circuit in the circuit
between the battery and
the inverter
；
Check if the
inverter is faulty
8
Communication failure
between battery and
inverter
The wrong battery model
type is selected on the
inverter
Select correct battery
model type on the inverter
4.2 Replacement of main component
Danger:
The Tower battery system is a high voltage DC system, only can be operated by
professional and authorized person.
4.2.1 Replacement of Battery Controller (BDU)
4.2.1.1 Turn off the whole battery system. Ensure the Negative terminal and Positive terminal
have no power. The shut down progress refer to section 3.5.5
4.2.1.2 Remove the four screws on the BDU and remove the BDU from the system.
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:
