04-3598_ABB_PVA11_T_1-3kVA_EN_REV-B.doc
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Modifications reserved
3.5
Battery charging
Fully charge the batteries of the UPS system by leaving the UPS system connected to the mains for 1-2
hours. You may use the UPS system directly without charging it but the stored energy time may be
shorter than the nominal value specified.
3.6
Connecting external batteries (Models without in-built batteries)
WARNING!
ANY INCOMPLIANCE MAY RESULT IN THE RISK OF ELECTRIC SHOCK.
FOLLOW THE INSTRUCTIONS
The UPS system may be used immediately after its installation without charging the batteries. However,
the stored energy may be smaller than the nominal specified implying in lower initial autonomy. To fully
charge the batteries, connect the UPS system to the mains for 1-2 hours.
Use the battery pack with voltage: 36VDC for 1kVA (3x12V batteries), 96VDC for 2kVA/ 3kVA (8x12V
batteries). Connection of batteries with voltages higher or lower than required can cause abnormality or
permanent damage.
Follow the steps below to connect the external batteries to the UPS.
1) Switch the battery breaker OFF.
2) Make sure the mains input is not present
3) Remove the cover of terminal block on the rear of the UPS and prepare the battery cable which
should be able to carry the current of >30A for 1kVA, >22A for 2kVA, >33A for 3kVA. The cross section
area should be great than 4 mm
2
for all models.
The following battery wire coloring is recommended:
＋
GND
－
Red wire
Green/Yellow wire
Black wire
4) Connect the red wire to the "+" terminal of the battery and the black wire to the "-" terminal of the
battery. (Note: the green/yellow wire is grounded for protection purpose.)
5) Make sure the wires are fasten and install the terminal block cover on the rear panel of the UPS.
6) Connect the UPS to the load. Then turn on the mains switch or connect the power cord of the UPS to
the power supply. The battery charging process will then be started.
WARNING!
A DC BREAKER MUST BE CONNECTED BETWEEN THE UPS AND
EXTERNAL BATTERY.
THE OUTPUT SOCKETS OF THE UPS SYSTEM MAY STILL BE
ELECTRICALLY LIVE EVEN IF THE POWER SUPPLY SYSTEM HAS BEEN
DISCONNECTED OR THE BYPASS SWITCH IS ON
“OFF” POSITION.
For the dimensioning of the DC breaker, consider the voltages and currents indicated in Table 4.
Model No.
DC breaker
Voltage
Current
1KVA
48Vdc
50A
2KVA
125Vdc
40A
3KVA
125Vdc
60A
Table 4
: DC breaker
