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aTCA-80302PA/PD
7 Power
The shelf supports AC- and DC-Power Entry Modules (PEMs). Both PEMs have
the same interface to the shelf.
The AC-PEM can be powered with 230 VAC line voltage. The specified
voltage range is from 180 VAC to 265 VAC .The Shelf supports redundant
power inputs but the two in- puts should be independently powered.
The DC-PEM can be powered using a regular telecommunication power
supply of -48/-60 VDC with a VDC return. The specified voltage range is from
-40.5 VDC to -72 VDC. The Shelf supports redundant power inputs but the
two inputs should be in- dependently powered.
7.1 AC PEM
Two pluggable redundant AC Power Entry Modules (PEM) are located at the rear
top side of the Shelf. The power input is provided by an AC mains/line module with
IEC 320-C14 connector and mains switch. The output voltage of the AC PEM is 48
VDC. Overcurrent protection is provided by a 40 A fuse in the output branch.
Figure 10: AC PEM
1 Green Fan Tray OK LED
4
Hot Swap push button
2 Red Fan Tray Alarm LED
5
IEC 320-C14 connector
3 Blue Hot Swap LED
6
Mains switch
7
Fuse
Hazardous voltage!
Before working ensure that the power is removed from the power connection
cables.
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