Battery Connection - LEGRAND NUMERIC HP i 33 User Manual

Terminal sequence from left to right: Ground, battery positive, battery neutral, battery negative, input phase
R(L1), bypass phase R(L1), input phase Y(L2), bypass phase Y(L2), input phase B(L3), bypass phase B(L3), input
neutral line, output phase R(L1), output phase Y(L2), output phase B(L3), output neutral line and ground.
Choose appropriate power cable with adequate provision of diameter of the connection terminal of the cable
that should be greater than or equal to that of the connection poles:
WARNING
If the load equipment is not ready to accept power on the arrival of the commissioning engineer
then ensure that the system output cables are safely isolated at their ends.
Connect the safety earth and any necessary bonding earth cables to the copper earth screw located
on the floor of the equipment below the power connections. All cabinets in the UPS must be
grounded properly.
CAUTION
The earthing and neutral bonding arrangement must be in accordance with local and national
codes of practice.
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3.8 Battery Connection

10-30 kVA
The UPS adopts positive and negative double battery framework, totally 20 blocks (optional 16/18) in
series. A neutral cable is retrieved from the joint between the negative of the 10th (8th/9th) and the
positive of the 11th (9th/10th) of the batteries. Then the neutral cable, the battery positive and the battery
negative are connected with the UPS respectively. The battery sets between the battery positive and the neutral
are called positive batteries and that between neutral and negative are called negative ones. The user can
choose the capacity and the numbers of the batteries according to their needs.
External battery connections for long-run units.
10-30 kVA factory setting of the long-run unit is (battery quantity) 20 blocks, set the charging current based on
the AH. When connecting 16/18 batteries, please reset desired battery quantity and its capacity after UPS starts
at AC mode. Charger current could be adjusted automatically according to battery capacity selected. All related
settings can be done through LCD panel or monitoring software.
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