49
CHECKING INSTALLATION:
NOTE:
the size of the fuses fitted will depend on the type of Battery Cabinet installed.
If the Battery Cabinet is supplied by our Company, make sure to have the correct fuse for the given UPS size (refer to Battery
Cabinet manual).
In case the Battery Cabinet isn’t supplied by the factory, please check that a DC switch is provided and that correct fuses are
installed according to
Table 5
. In any case, please read all the documentation provided by the supplier and check carefully
the compatibility with the UPS (voltage, number of poles, polarity etc.). Neutral wire must be connected.
During maintenance operations the Battery Cabinet switch must be open in order to isolate it from the UPS.
Insert the right fuses (see
Table 5
below) in the SWBATT fuse holders of the Battery Cabinet.
UPS (kVA)
Current rating of battery protection device [A]
10 - 15 - 20
63 A 500 Vdc gR or gS
Table 5
– UPS battery protection devices
Close the SWBATT fuse holders of the Battery Cabinet and the UPS (WARNING: pay attention that SWBATT of UPS only
disconnect the batteries contained within the UPS cabinet).
Carry out the UPS power-on procedure described in the USER MANUAL.
Once the UPS is started, check that the UPS is working properly: simulate a black-out by opening the SWIN input disconnect
switch of the UPS. The load must continue to be powered, the status light must change to orange and the buzzer will beep
at regular intervals. When the SWIN (input disconnect switch) is closed again, the UPS must return to normal operation from
the mains supply within a few seconds.
B
ATTERY ROOM VENTILATION
The room where the Battery Cabinet is located must have sufficient ventilation to ensure the concentration of hydrogen
produced is within safe limits.
The room should preferably be ventilated naturally; if it cannot be, forced ventilation may be employed.
Standard EN 50272-2 regarding air exchange provides that the minimum aperture must satisfy the following equation:
A = 28 x Q = 28 x 0.05 x n x Igas x C10 (1/10³) [cm²] where:
A
= area of opening [cm²]
Q
= airflow required [m³/h]
n
= number of battery cells;
C10 = battery capacity in 10 hours [Ah]
Igas = gas producing current [mA/Ah]
according to the standard:
Igas = 1 in backup charging for VRLA type batteries
Igas = 8 in fast charging for VRLA type batteries
S
ETTING THE RATED BATTERY CAPACITY
–
S
OFTWARE CONFIGURATION
Having installed one or more BATTERY CABINETS, the UPS must be configured to the rated capacity value (total Ah of batteries
inside the UPS + external batteries).
To perform this operation, use the dedicated configuration software (reserved to service personnel only).
