Battery Room Design; Battery Temperature Sensor (Option) - Emerson Liebert APM 90 User Manual

50 Chapter 6 Battery
BCB-
BCB-

6.8 Battery Room Design

No matter which type of installation system is adopted, the following items shall be paid special attention to
(refer to Figure 6-2):
Layout of cells
No matter which battery installation system is used, the battery shall be located in a matter that it will not
contact two naked live parts with the potential difference over 150V at the same time. If it is unavoidable,
insulated terminal shield and insulated cable shall be used for the connection.
Workbench
The workbench (or pedal) must be skid-proof and insulated, and at least 1m wide.
Wiring
All the wiring distances shall be minimized.
BCB
The BCB is generally installed in the wall-mounted box near the battery.

6.9 Battery Temperature Sensor (Option)

The battery temperature sensor is used to detect the battery temperature. It is placed near the battery where
it can detect the highest battery temperature. For details, refer to the user manual of the battery temperature
sensor.
With this function, we can adjust the float charging voltage of the battery to make it inversely proportional to
the ambient temperature of the battery cabinet/chamber, so as to prevent the over-charge of the battery
under high ambient temperature.
Top layer
Top layer
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Figure 6-1 Battery cable connection
Figure 6-2 Battery room design
Liebert APM 90 Integrated Modular UPS User Manual
Middle layer
Middle layer
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BCB N
BCB N
Bottom layer Bottom layer
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BCB+
BCB+