To remove wires from the terminal block that serves three PSMs:
a. Remove the wire labeled L3 from the input terminal labeled C2.
b. Remove the wire labeled L2 from the input terminal labeled B2.
c. Remove the wire labeled L1 from the input terminal labeled A2.
d. Remove the grounding wire from the grounding point labeled GND.
NOTE: The three-phase delta AC PDM terminal blocks will be flipped depending on which
slot the PDM gets plugged into.
10. Loosen the plastic cable tie fastening the AC power cord to the PDM.
11. Loosen and remove the retaining nut from the AC power cord.
12. Pull the AC power cord out of the metal wiring compartment.
13. Carefully move the AC power cable out of the way.
14. Disconnect the AC power cord from the AC PDM.
SEE ALSO
Installing an MX2020 Three-Phase Delta AC Power Cord | 636
Installing an MX2020 Three-Phase Delta AC Power Cord
To install a three-phase delta 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 the power switches on all the PSM faceplates to the off (O) position for any PSMs that are
powered only from this PDM.
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