Installing a 750 W Internal DC Power Supply
Caution
Make sure that the DC power supply circuit is not overloaded. Use proper overcurrent
protection, such as a circuit breaker, to prevent overcurrent conditions. You may use up to a
30-Amp breaker.
To install a 750 W DC power supply in a switch, perform the following tasks in the order listed:
1 Make sure you have the tools and materials you need.
See Required Tools and Materials for Installing a 750 W DC Power Supply on page 202.
2 Prepare the power cables and ground cable by stripping o the insulation.
See Preparing the Cables for a 750 W DC Power Supply on page 202.
3 Ground the switch chassis.
See Grounding the Switch Chassis on page 203.
4 Insert the power supply into the switch.
See Installing a 750 W Internal DC Power Supply on page 202.
5 Connect the ground wire.
See Connecting the Ground Wire to a 750 W DC Power Supply on page 204.
6 Connect the power supply to the DC source voltage.
See Connecting a 750 W DC Power Supply to the Source Voltage on page 204.
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 dierently colored insulation, as described in Required
Tools and Materials for Installing a 750 W DC Power Supply on page 202.
Installing Your Extreme Networks Switch
ExtremeSwitching and Summit Switches: Hardware Installation Guide 202
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