2. Prepare the power cables and ground cable by stripping off the insulation.
Preparing the Cables for a 750 W DC Power Supply
3. Ground the switch chassis.
on page 241.
4. Insert the power supply into the switch.
Installing a 750 W Internal DC Power Supply
on page 240.
5. Connect the ground wire.
Connecting the Ground Wire to a 750 W DC Power Supply
on page 242.
6. Connect the power supply to the DC source voltage.
Connecting a 750 W DC Power Supply to the Source Voltage
7. Energize the DC circuit.
Required Tools and Materials for Installing a 750 W DC Power Supply
You need the following tools and materials to install or remove a 750 W DC power supply in an
ExtremeSwitching X695 switch.
•
#14 AWG copper cable for grounding the power supply and connecting the power supply to the DC
power source. (DC power cables and grounding cables are not included with the power supply.)
Recommended insulation colors are:
◦
Red for the –48 V connection (–)
◦
Black for the –48 V RTN connection (+)
◦
Green or green with yellow stripe for the ground connection
•
Connection hardware appropriate to the installation site:
◦
Hardware for connecting the power wires to the DC source
◦
Hardware for connecting the ground wire to the site grounding point
•
Stripping tool
•
Cross-head (Phillips) torque screwdriver
•
#1 cross-head (Phillips) screwdriver
•
ESD-preventive wrist strap
•
Thermal protective gloves (for removal of a warm power supply)
Preparing the Cables for a 750 W DC Power Supply
You will need three cable wires for each installed DC power supply: two input cables and a grounding
cable. We recommend that each cable have differently colored insulation, as described in
Tools and Materials for Installing a 750 W DC Power Supply
on page 241.
To prepare the cable wires, follow these steps:
1. On each cable wire, strip 6 mm (0.25 inch) of insulation from one end.
2. Repeat the previous step for the other two cable wires.
Grounding the Switch Chassis
Before installing DC power supply units in your switch, perform these steps:
1. Verify that the DC circuit is de-energized.
Installing Your Extreme Networks Switch
Installing a 750 W Internal DC Power Supply
ExtremeSwitching Hardware Installation Guide
241