Mx2008 Power Midplane Description; Mx2008 Ac Power Supply Module Description - Juniper MX2008 Hardware Manual

MX2008 Power Midplane Description

The MX2008 power system consists of a power midplane. This midplane is used to connect power from
the PDM feeds (AC or DC) to the input of the PSMs (AC or DC) as well as the output from the PSMs to
the FRUs (MPCs, RCBs, SFBs, and fan trays). The power midplane plugs into the signal backplane. The
PSMs and PDMs get plugged into the power midplane.
SEE ALSO
MX2008 DC Power Supply Module (-48 V) Description | 100
MX2008 DC Power Distribution Module (-48 V) Description | 96
MX2008 AC Power Requirements | 74
MX2008 DC Power Requirements | 105
MX2008 Power System Description | 58

MX2008 AC Power Supply Module Description

NOTE: The MX2008, MX2010, and MX2020 routers support the same power modules (AC/DC
PSMs and AC/DC PDMs).
There are a total of nine AC power supply modules (PSMs) located at the rear of the chassis in slots PSM0
through PSM8 (left to right). The AC PSMs in slots PSM0 through PSM8 provide power to:
Fan trays (0 and 1)
MPCs in slot 0 through 9
RCBs in slot 0 and 1
SFBs in slot 0 through 7
The MX2008 routers supports a three-phase delta AC power system, three-phase wye AC power system,
or a single-phase AC power system.
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