Table 2-6: Power Requirements, Base Station Equipment - Nera WILINK I System Manual

2.2.3 Power Requirements
Use the following table to calculate worst-case power source requirements for the
Base Station equipment (see also some examples in Table 1-15 on page 19):
Unit
Power Source
PIU
PSU
NPU
AU-IDU
AU-ODU
AVU
NOTE
The PSU(s) do not supply power to the AU-ODUs that are powered directly from the power source
via the PIU and the back plane.
2.2.4 HOT SWAP Support
The NPU, AU-IDU and new PIU modules includes a blue HOT SWAP LED and a
micro-switch in the injector/ejector handle to support hot-swap control. After
releasing the ejector's button, the HOT SWAP LED should turn on, indicating that
power to/from the back-panel is disconnected and the module can be removed
safely. For more details refer to Section 2.2.9.
2.2.5 Power Interface Unit (PIU)
The single Euro PIU module is the interface between the Base Station site's DC
power source and the Base Station Chassis Power Supply Units and external
ODUs, which receive power via the IDUs.
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
WILINK I MODULAR BASE STATION SYSTEM MANUAL

Table 2-6: Power Requirements, Base Station Equipment

Details
-40.5 to -60 VDC
16W maximum (active PIU)
200W max output power
Efficiency: 80% minimum
65W maximum
38W maximum
38W maximum
24W maximum
Installing the Base Station Equipment
33