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Chapter 11
Power Supply Unit
The following figure shows the front of the Power Supply Unit (PSU).
Figure 183: Power Supply Unit Front Panel
11.1
Power Supply Unit (PSU) – Theory of Operation
Dependent on its configuration the MTS is equipped with one or two high efficiency switch mode Power
Supply Units (PSU). The PSU has a nominal AC input of 100VAC/240VAC (45-66 Hz) as well as a DC
input of 48VDC.
The PSU:
•
has the capability to charge a 48V backup battery during AC operation mod.
•
provides several DC output voltages to supply Base Radios, Site Controller, ATCC and Fans
•
complies with the appropriate CE marking, EMC, EMI and safety requirements.
6802800U74-AN
Power Supply Unit
329
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