Contents Dc Power Supply; Dc Power Supply Electrical Specifications - Juniper MX-series MX960 Installation Instructions Manual

MX960 Ethernet Services Router DC Power Supply Installation Instructions
DC Power Supply
In the DC power configuration, the router contains either two or four DC power
supplies (see Figure 1 on page 2), located at the lower rear of the chassis in
slots
two to four power supplies. The DC power supplies in slots
power to the lower fan tray, DPC slots
power supplies in slots
slots
Four power supplies provide full redundancy. If a DC power supply fails, its redundant
power supply takes over without interruption.
Each DC power supply has a single DC input ( 48 VDC and return) that requires a
dedicated 80 A ( 48 VDC) circuit breaker for the maximum router hardware
configuration. For information about site power preparations and connecting the
router to power and ground, see the MX960 Ethernet Services Router Hardware Guide.
For DC power supply and power system electrical specifications, see Table 1 on page
3 and the MX960 Ethernet Services Router Hardware Guide.
Figure 1: DC Power Supply

DC Power Supply Electrical Specifications

Table 1 on page 3 lists the DC power supply electrical specifications. For DC power
system electrical specifications, see the MX960 Ethernet Services Router Hardware
Guide.
2
DC Power Supply
through (left to right). You can upgrade your DC power system from
PEM0 PEM3
PEM1 and
through , and SCB slot
0 5
through , and SCB slots
6 11
PEM3 provide power to the upper fan tray, DPC
.
0
PEM0 and PEM2 provide
and . The DC
1 2