Juniper PTX5000, Hardware Manual

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Replacing a PTX5000 Three-Phase Delta AC PDU Power Cord
IN THIS SECTION
Removing a PTX5000 Three-Phase Delta AC PDU Power Cord | 359
Installing a PTX5000 Three-Phase Delta AC PDU Power Cord | 362
Removing a PTX5000 Three-Phase Delta AC PDU Power Cord
To remove a three-phase delta PDU power cord:
1. Switch off the customer-site circuit breakers to the PDU being removed.
2. Move the circuit breaker and power OUTPUT switch located on the faceplate of the PDU to the off
(O) position.
3. Disconnect the AC power cord from the power source.
NOTE: After powering off a PDU, you must wait at least 60 seconds before turning it back on.
4. Make sure that the voltage across the AC power cord is 0 V and that there is no chance that the AC
power cord might become active during the removal process. Verify that the 200-240 V ~ 60 A
50-60 Hz LED on the PDU faceplate is off.
5. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
one of the ESD points on the chassis at the back of the PTX5000.
6. Open the door of the metal wiring compartment. Disconnect the wires from the AC terminal block
on the three-phase delta AC power supply ( Figure 9 ). Using a 1/5-in. (5.5-mm) slotted screwdriver,
loosen the input terminal or grounding point screw, and remove each wire from the input terminal or
grounding point.
a. Remove the wire labeled L3 from the L3 input terminal.
b. Remove the wire labeled L2 from the L2 input terminal.
c. Remove the wire labeled L1 from the L1 input terminal.
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