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2 BitStorm 1900 Installation and Testing Elastic Networks

2-66 BitStorm 1900™ Installation and Maintenance Guide 08-01101-01, Rev. 1.50

Step Procedure cont.

3.) With the power supply turned OFF, connect the -48 V DC (250W/

260W) or 110 V AC (70W/260W) power source according to the

following table and Figure 2-8, "Typical DC Power Harness Con-

nection to -48 V DC (250W/260W) Power Source," on page 67.

WARNING: POSSIBLE EQUIPMENT DAMAGE! With the

-48 V DC power supply, reversed polarities

on the power feed can irreparably damage

the BitStorm 1900 shelf components. Be

certain that power feeds are connected

properly to the power source, with the red

lead connected to the -48 V DC supply

(negative terminal) as shown in the table

below. Note that this is the opposite of other

(non-telecommunications) applications, in

which the red lead is usually connected to

the positive (+) terminal.

Power

Lead

Power Source Terminal Connection Line Fuse

Red -48 V DC supply

(250W/260W)

Negative (-) 3 AMP, 250W

10 AMP, 260W

Black -48 V DC return

(250W/260W)

Positive (+)

N/A 110 V AC supply

(70W/260W)

IEC 2 AMP, 70w

6 AMP, 260W

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Elastic Networks 600 Specifiche Pagina 88