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2-22

To connect the DC power cord for the fixed DC power supply:

1. Correctly orient the DC power cord plug and insert the plug into the power receptacle on the

power supply.

If you orient the DC power cord plug upside down, you cannot insert the plug into the power

receptacle.

2. Use a flat-head screwdriver to fasten the screws on the power cord connector, as shown in

Figure2-25.

3. Connect the other end of the power cord to a –48 VDC power source or an RPS.

Figure2-25 Connecting the DC power cord for the fixed DC power supply

Connecting the DC power cord for the fixed DC power supply

(method 2)

CAUTION:

To avoid connection mistakes, i

dentify the positive (+) and negative (-) marks

above the DC power

receptacle before connecting the switch to a –48 VDC power source.

IMPORTANT:

No DC power cord is provided with the switch. As a best practice, purchase a DC power cord with a

current carrying capacity over 6A.

To connect the DC power cord for the fixed DC power supply:

1. Correctly orient the terminal block and attach the terminal block to the power receptacle on the

power supply, as shown by callout 1 in Figure2-26.

If you orient the terminal block upside down, you cannot attach it to the power receptacle.

2. Use a flat-head screwdriver to fasten the screws on the terminal block to secure the terminal

block to the power receptacle. See callout 2 in Figure2-26.

3. Insert the two DC power wires into the terminal block, as shown by callout 1 in Figure2-27.

4. Use a flat-head screwdriver to fasten the screw at the top of the terminal block to secure the DC

power cord to the power receptacle. See callout 2 in Figure2-27.

5. Connect the other end of the power cord to a –48 VDC power source.

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