Teledyne HPAC-2005, Operation Manual

Page: 22 / 156

22 205356 REV T 3 RU SSPA Chassis Operations Manual
2.1.2.2 DC Input with N+1 Redundant External Power Supply (J10) (Option)
The combination of a se12 VDC output, fully redundant power supply is an
excellent means of obtaining the ultimate system reliability. The power supply is an
N+1 redundant configuration, meaning that a failure of a single power supply module
will not take the amplifier off the air.
In addition, the power supply modules are removable from the front panel while in
operation. There is never a need to remove the power supply from the equipment bay.
Weighing only 9 lbs. (4 kg) and occupying only 1 rack unit of cabinet space, the
redundant power supply chassis is an excellent companion to the SSPA chassis.
Power connection to the SSPA is via quick-snap connectors to the input power
bulkhead at Port J10.
Each power supply has a single phase, universal AC input ranging from 90-265 VAC,
47-63 Hz and is power factor corrected to 0.99. Depending on the power requirements
of the SSPA, the power supply is configured with up to four (4) 1200W hot-swappable
modules, each of which weigh approximately 5 lbs. (2.3 kg).
Figure 2-3
shows a 3RU SSPA chassis with a N+1 Redundant External Power Supply.
Note the blanking panels in place of the power supplies normally integral to the SSPA
chassis.
It should be noted that if a power module is removed from the chassis during normal
operation, it will trigger a power supply fault. The operator must wait 30 seconds before
re-inserting the module or the fault will not clear.
The power supply chassis has a dual feed AC architecture. Power module slots 0 & 1
are supplied via AC Feed 1 and power module slots 2 & 3 are supplied via AC Feed 2.
Figure 2-3: 3RU SSPA Chassis with 1RU N+1 Redundant Power Supply