Juniper MX2010, Hardware Manual

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Prevention of Electrostatic Discharge Damage | 794
Connecting AC Power to an MX2000 Router with Three-Phase Delta AC
Power Distribution Modules
CAUTION: Do not mix AC and DC power modules within the same router.
WARNING: Power connections must be performed by a licensed electrician only.
You connect AC power to the router with three-phase delta AC power distribution modules (PDMs) by
connecting the AC power cord from an AC PDM to an AC power source.
To connect an AC power cord to an AC power source:
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
an approved site ESD grounding point. See the instructions for your site.
2. Switch off the dedicated customer-site circuit breakers. Ensure that the voltage across the AC power
source cable leads is 0 V and that there is no chance that the cable leads might become active during
installation.
3. Detach the ESD grounding strap from the approved site ESD grounding point, and connect the strap
to one of the ESD points on the chassis.
4. Move the power switches on all the power supply module (PSM) faceplates to the off (O) position.
5. Verify that the correct three-phase delta PDMs are installed and secured in the chassis before connecting
power cables.
NOTE: The power cables must be uninstalled and removed from the three-phase delta
PDM before removal of the PDM from the chassis.
6. Using a number 2 Phillips (+) screwdriver, unscrew the four captive screws located on either side of
the metal AC wiring compartment (four screws total per PDM).
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