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Supplying Power to the Alpine 3802 DC Power Supply

Extreme Networks Consolidated Hardware Guide 153

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 41.

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.

6 Replace the plexiglas cover.

7 Turn on the DC supply at both the wall breaker and at the power supply breaker.

8 Leave the ESD strap permanently connected to the chassis so that it is always available when you

need to handle ESD-sensitive components.

Verifying a Successful Installation

After you supply power to the Alpine switch, the switch performs a power-on self test (POST).

During the POST, all ports are temporarily disabled, the packet LED is off, the power LED is on, and

the MGMT LED flashes. The MGMT LED flashes until the switch successfully passes the POST.

Table 41: 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

1 2 ... 148 149 150 151 152 153 154 155 156 157 158 ... 335 336

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Extreme Networks WM-4T1i Spécifications Page 153