Mx2020 Three-Phase Delta Ac Power Distribution Module Description; Figure 37: Three-Phase Delta Ac Power Distribution Module - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
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MX2020 Three-Phase Delta AC Power Distribution Module Description

86
MX2020 Router Overview on page 3
MX2020 Chassis Description on page 5
MX2020 Modular Port Concentrator Description on page 68
MX2020 Switch Fabric Board Description on page 64
MX2020 Host Subsystem Description on page 57
MX2020 Modular Interface Card Description on page 73
MX2020 Power Subsystem Description on page 83
MX2020 Backplane Description on page 11
Each three-phase delta AC PDM weighs approximately 12 lb (5.44 kg). A metal wiring
compartment contains two AC terminal blocks and ground labeled
block consists of three input terminals that serves six PSMs and the second terminal
block serves three PSMs. The terminal block on the left is labeled
to top). The second terminal block on the right is labeled
The PDMs are located at the rear of the chassis in slots
PDM3/Input1 , (bottom to top). LEDs provide the status of the PDM.
shows the three-phase delta AC PDM.
NOTE: The three-phase delta AC PDM terminal blocks will be flipped
depending on which slot the PDM gets plugged into.

Figure 37: Three-Phase Delta AC Power Distribution Module

Figure 38 on page 87 shows the three-phase delta AC PDM connections.
NOTE: The three-phase delta AC PDM must be installed and secured in the
chassis before connecting the power input cables. If the PDM must be
removed, both input power cables must be uninstalled and removed from
the PDM before the PDM can be removed from the chassis. The MX2020
chassis is not sensitive to phase rotation sequence—either CW or CCW will
operate correctly.
. One AC terminal
GND
A1 , B1 , and C1 (bottom
, , and (bottom to top).
A2 B2 C2
through
PDM0/Input0
Figure 37 on page 86
Copyright © 2015, Juniper Networks, Inc.