13
NOTES :
• As shown on the power cable connection diagram of the UPS, U1, V1 and W1 phase of the incoming 3
phase supply are also used as the bypass inputs under normal conditions (U1, V1, W1 and U2, V2, W2 are
the same in this case).
• If there is a separate 3- phase AC supply for bypass (Split Bypass):
a-) Remove the links between AC INPUT SW (S1) and BYPASS INPUT SW (S2)
b-) Connect the phases of the bypass source U2, V2 and W2 to the input terminals of S2
(Keeping the AC input phases U1, V1, and W1 connected to S1 terminals)
c-) Connect the Neutral (N2) of the Bypass source to.NEUTRAL BUSBAR
Note that the Neutral of the 3 phase input supply (N1) and the Neutral of the 3-phase bypass supply (N2)
must always be connected together to form the Neutral of the AC output.
2.7 Battery Installation
WARNING!!! Be careful while connecting batteries.
ATTENTION!!! Open the battery switch before making any connection on the batteries.
The batteries associated with the UPS equipment are usually contained in a purpose-built battery cabinet.
External batteries are used in DXA3000 Series 100,120,160,200 and 250 kVA UPSs, there is no space for
internal batteries in UPS cabinet.
Where battery racks are used, they should be sited and assembled in accordance with the battery
manufacturer’s recommendations. In general, batteries require a well-ventilated, clean and dry environment
at reasonable temperatures to obtain efficient battery operation.
In general a minimum space of 10 mm must be left on all vertical sides of the battery block. A minimum
clearance of 20 mm should be allowed between the cell surface and any walls. All metal racks and cabinets
must be earthed.
1. Unpack each battery and check its terminal voltage with a suitable load. Any battery with terminal
voltage less than 10,5V must be charged before installation.
2. Please check the battery connecting hardware and documents. (cables, trays, connection diagrams)
3. Please locate suitable number of batteries on each rack, according to the battery installation and
connection diagram given with the unit.
4. Start locating the batteries from top to the bottom on the racks.
5. Be careful about the connection between the racks and polarities.
6. After interconnecting the batteries, connect “+”, “0” and “-“ leads of the batteries to the battery input
terminals on the UPS. Be careful to connect the batteries correctly and do not turn on the battery
switch/fuse on the external battery cabinet before checking all connections and before starting the
UPS. In DXA3000 Series UPS, 60 blocks of batteries are connected in series, in such a way that they
form two strings of batteries with opposite polarity; with a center point connected to the NEUTRAL
BUSBAR.
NOTE THAT SEPARATE CABLES FROM EACH BATTERY GROUP SHOULD BE CONNECTED TO
THE NEUTRAL BUSBAR TO FORM THE MIDPOINT CONNECTION.
WARNING!!! NEVER TURN ON BATTERY SWITCH/FUSE ON THE EXTERNAL BATTERY CABİNET
WITHOUT CENTER POINT CONNECTIONS TO THE NEUTRAL BUSBAR.
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