Figure 306: T1600 Router Redundant Power Supplies - Juniper M Series Monitoring And Troubleshooting Manual

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TX Matrix Redundant Power Supplies

Mixing AC and DC power supplies is not supported and prevents the

router from booting. If two power supplies are installed, they must be either

both AC or both DC.

A circuit breaker box must be installed on a DC-powered router, while a

circuit breaker is incorporated into each AC power supply. Converting the

router from AC to DC power or vice versa involves removing or installing

the circuit breaker box. Only authorized service personnel should perform

the conversion: this manual does not include instructions.

When two power supplies are installed, at least one Routing Engine and

one FPC must also be installed for both power supplies to power on. In the

absence of this minimum load, only one power supply starts. (The router

powers on and operates correctly with one power supply, but without the

redundancy benefit of having a second power supply installed.)

Figure 306: T1600 Router Redundant Power Supplies

3-input 240-A

power supplies

Checklist for Monitoring Redundant Power Supplies on page 607

The TX Matrix router supports DC power only. The TX Matrix router has two load-sharing

DC power supplies, two-input 160-A DC and three-input 240-A, located at the lower rear

of the chassis in slots PEM0 and PEM1 (top to bottom).

the TX Matrix router power supplies and where they are installed in the chassis.

These two power supplies share the load evenly. If one power supply fails, the other

power supply can provide full power to the TX Matrix router indefinitely.

Mixing a two-input 160-A power supply and a three-input 240-A power

supply in the same chassis is not supported during normal operations.

Chapter 30: Monitoring Redundant Power Supplies

Figure 307 on page 618