Extreme Networks Extreme 7520 Series Hardware Installation Manual page 64

Install an 800 W Internal DC Power Supply
Warning
Make sure that the AC power supply circuit is not overloaded. Use proper
over-current protection, such as a circuit-breaker, to prevent over-current
conditions.
To install an 800 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
Materials for Installing a 800 W DC Power Supply
2. Prepare the power cables and ground cable by stripping off the insulation. See
Prepare the Cables for an 800 W DC Power Supply
3. Insert the power supply into the switch. See
page 65.
4. Connect the ground wire to the power supply. See
800 W DC Power Supply
5. Connect the power supply to the DC source voltage. See
Power Supply to the Source Voltage
6. Energize the DC circuit. See
Required Tools and Materials for Installing a 800 W DC Power Supply
You need the following tools and materials to install or remove a 800 W DC power
supply in an Extreme Networks switch.
•
#6 AWG copper cable for grounding the power supply and connecting the power
supply to the DC power source. (red and black grounding cables are included with
the power supply):
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
•
#1 cross-head (Phillips) screwdriver
•
ESD-preventive wrist strap
•
Thermal protective gloves (for removal of a warm power supply)
Prepare the Cables for an 800 W DC Power Supply
You will need two cable wires for each installed DC power supply: one input cable
and a grounding cable. As a best practice, each cable should have differently colored
insulation, as described in
Power Supply
To prepare the cable wires, follow these steps:
1. Strip 6 mm (0.25 inch) of insulation from one end on each cable wire if necessary.
64 Extreme 7520 Hardware Installation Guide
on page 65.
Required Tools and Materials for Installing a 800 W DC
on page 64.
Required Tools and
on page 64.
on page 64.
Installing an 800 W DC Power Supply
Connect the Ground Wire to an
Connect an 800 W DC
on page 66.
Install the Switch
on