Installing An Mx2000 Three-Phase Wye Ac Power Cord - Juniper MX2020 Hardware Manual

13. Carefully move the AC power cable out of the way.
14. Disconnect the AC power cord from the AC PDM.
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Installing an MX2000 Three-Phase Wye AC Power Cord | 644

Installing an MX2000 Three-Phase Wye AC Power Cord
To install a three-phase wye AC power cord:
1. Switch off the customer site circuit breakers to the PDM being removed. Make sure that the voltage
across the AC power source cord is 0 V and that there is no chance that the cord might become active
during the installation process.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
one of the ESD points on the chassis.
3. Switch all the power switches on the PSM faceplates to the off (O) position.
NOTE: After powering off a PSM, wait at least 60 seconds before turning it back on.
4. Using a number 2 Phillips (+) screwdriver, loosen the four screws on the cover of the metal wiring
compartment that protects the AC terminal block.
5. Remove the cover of the metal AC wiring compartment.
6. Unscrew the retaining nut from the AC power cord.
7. Place the retaining nut inside the metal wiring compartment.
8. Put the wires of the AC power cord through the hole of the retaining nut and rubber grommet.
9. Put the wires of the AC power cord through the hole of the metal wiring compartment.
10. Connect the wires to the AC terminal block on the three-phase delta AC PDM (see
Figure 290 on page 645). Loosen each of the input terminal or grounding point screws, and insert the
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