Chapter 2 Battery Installation
MUST400_User manual_EN_REV02 User Manual
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2.2.4 Battery setting
Warning
All battery setting must to be carry out with all battery switches or fuses opened
All battery setting must be performed by trained and expertise technician.
CAUTION: Wrong battery settings can destroy the batteries, damage the UPS, reduce the backup
time or not assure the proper batteries recharge.
Moreover wrong battery settings invalid the warranty.
Follow the below instruction for battery setting:
Check the number of batteries installed is aligned with application request
Ensure that all batteries are well connected and the number of battery blocks in each string are the
same
Control that all batteries are of the same capacity
Verify or set in LCD the correct batteries setting in the battery setting menu:
Fig. 2- 3: LCD battery setting menu
In particular:
1. Number of batteries, standard configuration is 40
2. Battery capacity for correct management of remaining backup time. Standard configuration is 18Ah
3. Float cell voltage. For VRLA, float charge voltage should be between 2.2V to 2.3V. Standard
configuration is 2.25V.
4. Boost cell voltage. For Valve Regulated Lead Acid (VRLA) batteries, maximum boost charge voltage
should not exceed 2.4V / cell. Standard configuration is 2,35V
5. EOD (end of discharge). Standard setting is 1,65V (0.6C) e 1,75V (0.15C).
6. C
harging current, “Charge I(%)” parameter indicate the percentage of rated
active power of the
module available to charge the batteries (max setting 20%). Standard setting is 3%.
Note
Caution: the batteries charging current depend to the number of modules inserted in the system.
Every time that will be inserted or replaced one power module the battery recharging current will
change.
警告
危 险
警告
危 险
