Extreme Networks Alpine 3802, Hardware Manual

Page: 150 / 352

150 Extreme Networks Consolidated Hardware Guide
Alpine 3800 Series Switch Power Supplies
Complete the following tasks before installing any switch components:
• Ground the rack—For more information about grounding the rack, see “Protective Grounding for the
Rack” on page 46.
• Mount the chassis in a rack—For more information about mounting the chassis, see “Installing the
Chassis” on page 132.
•
Ground the chassis—For more information about grounding the chassis, see “Grounding the Alpine
3800 Series Chassis” on page 135.
In the event of a power supply failure, please contact Extreme Networks about servicing and replacing
your power supply.
NOTE
Alpine 3802 power supplies must be removed and replaced by personnel that have been trained by
Extreme Networks and in accordance with all local and national electrical codes.
Selecting the Cabling
Use the following guidelines when selecting cabling for the DC power supplies:
• Each DC power supply requires 6.5 A at -48 VDC nominal (or equivalent power between -40 and -70
VDC).
•
For DC power and ground cables, use 14 AWG, high strand-count copper wire cable .
Use power cables with the specifications outlined in Table 42.
Attaching the Cabling and Supplying Power
After you receive your Alpine 3802, you need to attach the cabling so you can supply power to the
chassis. To attach the cable to the lugs, and then to the DC power supply, perform the following steps:
1
Attach the ESD strap that is provided to your wrist and connect the metal end of the ESD strap to
the ground receptacle that is located on the top-right corner of the switch front panel.
2 Remove the plexiglas cover that shields the power connection on the power supply.
3 Strip 0.5 inches of insulation from the appropriate AWG, high strand-count copper cable.
4 Insert the cable into the DC ground and power cable lugs on the power supply.
CAUTION
Ensure that no copper is visible between the lug and the cable insulation.
5 Tighten the cable retention screw, using a # 2 phillips screwdriver, to a maximum of 10 in-lbs
(1.2 Nm) of torque.
Table 42: Source DC power specifications for the Alpine 3802
Characteristic Specification
DC power cable size 14 AWG, high-strand count copper wire
Power -- 40 - - 70 VDC 7.5 A max