Huawei UPS2000-G Series Quick Manual page 8

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Operations
ON/MUTE SELECT
6.1 Setting Key UPS Parameters
1. The 1 kVA UPS with standard backup time have two built-in batteries, the 2 kVA UPS with
standard backup time have four built-in batteries, the 3 kVA UPS with standard backup time
have six built-in batteries.
2. If the 1 kVA UPS with long backup time needs to connect to external battery strings, each
battery string must consist of three 12 V batteries connected in series. If the 2 kVA UPS with
long backup time needs to connect to external battery strings, each battery string must consist
of six 12 V batteries connected in series. If the 3 kVA UPS with long backup time needs to
connect to external battery strings, each battery string must consist of eight 12 V batteries
connected in series.
3. The UPS with long backup time provides a charge current of 4 A and the current is not
configurable. If the UPS needs to connect to battery packs or battery strings, the total battery
capacity must exceed 18 Ah. Otherwise, batteries may be damaged. If the capacity of external
battery packs or battery strings to be connected exceeds 40 Ah, it is recommended that an
external charger be purchased to increase the charge current. If an external charger is not
purchased, the charge time will be long.
4. For the UPS with standard backup time, the battery capacity has a fixed value of 9 Ah and the
charge current has a fixed value of 1 A. Set the battery capacity to the total capacity of all
batteries actually connected. Set the battery capacity for the long backup time model based
on site requirements. The default value is 7 Ah. For example, if eight batteries (9 Ah, 12 V) are
connected in series to form a battery string, and two of such battery strings are connected in
parallel and then to the UPS, set battery capacity to 18 Ah (9 Ah + 9 Ah). This parameter
affects the backup time calculation. Incorrect setting will cause incorrect display of the backup
time on the LCD.
5. When the battery pack/batteries connect to the Long back-up UPS for the first time, you must
do a battery self-check manually, in order to confirm the battery connection is normal. The
method is: hold down ON/MUTE on the front panel for 5 seconds, then the UPS transfer to
battery mode to do a shallow discharge test, after 10 seconds it automatically back to line
mode.
6. Charge the batteries used for the first time for 5 hours. Otherwise, the battery discharge time
will decrease.
OFF/ENTER
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