Figure 36: Three-Phase Wye AC Power Cord
NOTE: The three-phase wye 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 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.
e. Insert the wire labeled N into the input terminal labeled N2.
WARNING: To protect power supplies from input voltage that might be
caused by miswired 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-N1, B1-N1, C1-N1, A2-N2, B2-N2, and C2-N2
for three-phase wye PDM is not more than 264VAC when measured with
a 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.
53Copyright © 2015, Juniper Networks, Inc.
Connect Power to a Three-Phase Wye AC Power Distribution Module
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