PTX1000 AC Power Supply Description
The AC power supplies in the PTX1000 (see Figure 17 on page 40 and Figure 18 on page 40) are
hot-removable, and hot-insertable field-replaceable units (FRUs) that you can install without powering off
the router or disrupting the routing function. The PTX1000 has four power supplies.
CAUTION: Do not mix AC and DC power supplies in the same chassis.
Figure 17: PTX1000 FRU Panel
2—1— Fan modules (3)Power supplies (4)
Figure 18: AC Power Supply in a PTX1000
3—1— Ejector leverMale power connector
4—2— HandleStatus LED
Each of the 1600-W power supplies has a single AC input. The power supply provides 12-VDC output
with a standby voltage of 12 VDC. A PTX1000 provides for twice the number of power supplies needed
to power all of the components in the device, which is known as 2N redundancy. When the PTX1000 has
all four power supplies installed and connected to power, the router has full power redundancy. If a power
supply fails or is removed, another power supply balances the electrical load without interruption.
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