Juniper T640 - Page 35

11. Connect the wires to the AC terminal block on the three-phase delta AC power supply
(Figure 20 on page 35). Loosen the input terminal or grounding point screw, insert
each wire into the grounding point or input terminal, and tighten the screw.
NOTE: The terminal connections have either slotted screws or hex screws.
Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in
(4-mm) Allen wrench for the 5/16-in hex screws.
a. Insert the wire labeled GND into the grounding point labeled GND.
b. Insert the wire labeled L1 into the L1 input terminal.
c. Insert the wire labeled L2 into the L2 input terminal.
d. Insert the wire labeled L3 into the L3 input terminal.
Figure 20: Connecting Power to a Three-Phase Delta AC Power Supply
L1 L2 L3
g004951
L1 L2 L3
NOTE: The color of each AC power wire might vary.
12. Verify that the power cable connections are correct.
13. Using a number 2 Phillips (+) screwdriver, tighten the two captive screws on the metal
AC wiring compartment.
14. Use the provided plastic cable tie to fasten the AC power cord to the power supply.
35Copyright © 2015, Juniper Networks, Inc.
Connecting Power to a T640 Router with Three-Phase Delta AC Power Supplies