Juniper ACX5448, Quick Start Manual

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Depending on the configuration, your router uses either AC or DC power supply modules (PSMs). Perform the appropriate
procedures for each PSM in your router. The PSMs are hot-insertable and are field-replaceable units (FRUs). The ACX5400
routers use two PSMs, which install in the rear of the chassis in the slots provided.
WARNING: You must ground the router before connecting either the AC power cord or the DC power
cable.
CAUTION: Do not mix AC and DC PSMs in the same chassis. Similarly, do not mix components with
different airflow (AFO and AFI) in the same chassis.
Connect Power to an AC Router
Table 2 provides the AC power system input voltage for the ACX5400 routers.
Table 2: ACX5400 AC Power System Input Voltage
Specification Item
Operating range: 100–240 VAC AC input voltage
To connect AC power to an ACX5448 router:
1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap
to the ESD point on the chassis.
2. Power off the AC input appliance inlet on the source power supply.
3. Connect the power cord to the power source outlet.
NOTE: Each PSM must be connected to a dedicated AC power feed and a dedicated customer-site 2-pole
circuit breaker. We recommend that you use a dedicated customer-site circuit breaker rated for 20 A (110 VAC)
or 16 A (220 VAC) minimum, or as required by local code.
4. Push the end of the AC power cord retainer strip into the hole next to the inlet on the PSM faceplate on the router
until it snaps into place. Ensure that the loop in the retainer strip faces toward the power cord.
Figure 36 shows the port on the AC PSM for an ACX5448 router where the power cord retainer is installed.
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