NOTE:
The three-phase delta AC PDM terminal blocks will be flipped
depending on which slot the PDM gets plugged into.
CAUTION:
Wire label configuration is for Juniper Networks supplied cable
only. If you are using your own cable, make sure you use the proper
connections.
To connect wires to the terminal block that serves three PSMs:
a. Insert the grounding wire into the grounding point labeled
GND
.
b. Insert the wire labeled
L1
into the input terminal labeled
A2
.
c. Insert the wire labeled
L2
into the input terminal labeled
B2
.
d. Insert the wire labeled
L3
into the input terminal labeled
C2
.
WARNING:
To protect power supplies from input voltage that might be
caused by mis-wired PDMs, before reinstalling the metal cover to the
wiring compartment, apply AC voltage to the PDM (with disengaged PSM)
to make sure that two LEDs on the PDM are lit green and that the AC
voltage between AC terminal blocks A1-B1, B1-C1, C1-A1, A2-B2, B2-C2,
and C2-A2 for three-phase delta PDM is not more than 264 VAC when
measured with a digital voltage meter (DVM). Then turn off the AC breaker,
de-energizing the PDM, and install the metal cover and engage all AC
PSMs.
NOTE:
The color of each AC power wire might vary.
NOTE:
Three-phase delta AC wire assembly kits can be purchased from
Juniper Networks.
Table 4: Supported Three-Phase Delta AC Wire Gauge
Description
Wire Gauge
4 conductor wires, each wire is 6-AWG
4 x 6-AWG or equivalent
NOTE:
We recommend that you use the proper gauge wire in order for the
cable clamps to hold the AC cables. Using smaller gauge wiring will result
in the cable clamps not tightening properly.
47
Copyright © 2017, Juniper Networks, Inc.
Connect Power to a Three-Phase Delta AC Power Distribution Module
