Figure 16: Three-Phase Delta Ac Power Distribution Module - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
MX2020 Three-Phase Delta and Wye AC Power Distribution Module Overview
42
MX2020 Three-Phase Delta AC Power Distribution Module Description on page 42
MX2020 Three-Phase Wye AC Power Distribution Module Description on page 44
MX2020 Three-Phase Delta and Wye AC Power Distribution Module LEDs on page 46
MX2020 Three-Phase Delta AC Power Distribution Module Description
Each three-phase delta AC PDM weighs approximately 8.0 lb (3.62 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
to top). LEDs provide the status of the PDM.
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 16: Three-Phase Delta AC Power Distribution Module

Figure 17 on page 43 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.
GND
,
A1 B1
, , and
A2 B2 C2
PDM0 through
Figure 16 on page 42 shows the three-phase
Copyright © 2013, Juniper Networks, Inc.
. One AC terminal
, and (bottom
C1
(bottom to top).
PDM3 , (bottom