Manufacturer PN #: 700203
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The PIU filters and stabilizes the Base Station input power and protects the system from power problems such as over voltage, surge pulses, reverse polarity connection and short circuits. It also filters high frequency interference (radiated emissions) and low frequency interference (conducted emissions) to the external power source. Each Base Station chassis contains two slots for an optional 1+1 PIU redundancy. One PIU is sufficient to support a fully populated chassis. Two PIU modules provide redundant power feeding (two input sources) while avoiding current flow between the two input sources.
The regular PIU can support a total current of up to 35 A (@40.5 VDC), enabling support of a Base Station with up to 8 High-Power AU-ODUs (4 sectors using second order diversity). For configurations with a higher number of ODUs it is necessary to use Power Feeder(s). The High-Power PIU can support a total current of up to 58 A, enabling support of up to 20 High-Power AU-ODUs. For configurations with a higher number of ODUs (6 sectors with fourth order diversity) it is necessary to use a Power Feeder.
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