EXS
70 User Manual 10H52260UM60 - Rev. 1 - 10/2017
Battery Connections
1. All the battery cabinets or battery racks must be connected and properly grounded.
2. When multiple battery strings are used, they shall be connected first in series and then in parallel. Before
switching the UPS on and connecting it to the load, check that the total voltage of the batteries is as specified. The
negative and positive poles of the batteries must be connected to the negative and positive battery terminals of the
UPS, in accordance with the labels on the battery and UPS. If the battery connections are inverted it can cause fires
or explosions, and may result in battery and UPS damage or even human injury.
3. When the battery cable connection procedure is complete, install insulating shields on the terminals.
4.
When connecting the cable between battery terminal and circuit breaker, the circuit breaker terminal must be
connected first.
5. The bending radius of the cable shall be larger than 10D, wherein D is the outer diameter of the cable.
6. When the battery cable is connected, it is prohibited to pull on the battery cable or the cable terminal.
7. Do not cross the battery cables when connecting them, and do not tie the battery cables together.
8. See 8.2.1 Internal Battery Kit for details about the battery connections.
6.8 Designing the Battery Room
Irrespective of the type of installation system that is adopted, it is important to pay particular attention to the
following items (refer to Figure 6-1):
Layout of cells
Irrespective of the type of installation system that is adopted, the batteries must be positioned so that no two parts
having a potential difference of greater than 150 V can come into contact with each other at any time. If this is
unavoidable, insulated terminal shields and insulated cables shall be used for the respective connections.
Workbench
The workbench (or p
latform) must be skid-proof and insulated, and at least 1m wide.
Wiring
All the wiring distances shall be kept to a minimum.
circuit breaker
The circuit breaker is normally installed in a wall-mounted box close to the battery.
Figure 6-1 Design of battery room
6.9 Battery Maintenance
For the battery maintenance and maintenance precautions, refer to IEEE-Std-1188-2005 and the relevant manuals
provided by the battery manufacturer.
Note
1. Check the battery connection screws at regular intervals. If any loose screws are found, re-tighten them immediately.
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