Normal Capacity Three-Phase Wye Ac Pdu Components; Figure 27: Three-Phase Delta Ac Power Cord - Juniper PTX5000 Hardware Manual

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Figure 27: Three-Phase Delta AC Power Cord

1— Retaining nut

Normal Capacity Three-Phase Wye AC PDU Components

Each normal-capacity three-phase wye AC PDU has the following components
(Figure 28 on page 46):
A metal bracket located on the lower right to connect the wye AC power cord to the
PDU.
A metal wiring compartment that contains the AC input terminal block and ground.
The AC terminal block consists of three input terminals labeled
to right. The neutral input is labeled
One 32-A circuit breaker.
A power switch provides power to the PSMs.
OUTPUT
LEDs to monitor the status of the PDU.
Twenty-one monitored electronic fuses for the fan trays, Control Boards, and FPCs.
NOTE: There are no mechanical fuses in the PDU to be replaced. For output
voltage, current protection is provided by electronic fuses, hot-swap circuits,
or ORing circuit. Electronic fuses and hot-swap circuits also provide current
limitation.
NOTE: The PDUs contain no fans, but are cooled by the fans in the power
supply modules.
Chapter 4: Power System Components and Descriptions
1
2
2— Three-phase delta AC power cord
N .
, , and , from left
L1 L2 L3
45