Extreme Networks Alpine 3802, Hardware Installation Manual

Page: 248 / 394

248 Extreme Networks Consolidated "i" and "e" Series Hardware Installation Guide
Installing and Connecting BlackDiamond 6800 Series Power Supplies
6 Hold the edges of the power supply with both hands and pull the power supply slowly toward you.
After you pull the power supply toward you, place both hands underneath the power supply to
support it as you pull it out of the chassis.
CAUTION
The power supply weighs approximately 30 pounds (14 kg).
CAUTION
Do not handle the power supply using the DC output bus bars.
Install a replacement power supply following the instructions in “Installing a BlackDiamond 6800 Series
AC Power Supply” on page 243.
Leave the ESD strap permanently connected to the chassis so that it is always available when you need
to handle ESD-sensitive components.
Installing a BlackDiamond 6800 Series DC Power Supply
Before installing the DC power supply, you must select appropriate DC cabling and attach the
connection lugs.
Selecting and Preparing the DC Cabling
Use the following guidelines when selecting cabling for the DC power supplies:
• Each DC power supply requires a dedicated fuse or circuit breaker of 75 A minimum and 100 A
maximum.
• For DC power cables, use 4 AWG, high-strand-count copper wire cable.
For convenience, the necessary connection lugs used to connect the source DC cables to the power
terminals are loosely mounted on the studs of the DC power supply. using lock washers and nuts.
Figure 142 shows the specifications of the lugs. They are designed to fit over M6 (metric) terminals that
are centered 0.625 inch (15.86 mm) apart.
NOTE
Add a length of heat-shrink tubing to prevent the crimp area on the lug from coming into contact with
the metal faceplate of the DC power supply.