Dell PowerConnect B-RX16 Installation Guide - Page 58
Connecting DC power to a BigIron RX-8 chassis,
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2 Installing a BigIron RX-8 switch Connecting DC power to a BigIron RX-8 chassis You can use a DC power source for the BigIron RX-8 chassis. This is supported through use of a DC-to-DC power supply. DC power must be supplied at 48 V and 30 A. The DC-to-DC supply provides the DC power to the chassis at 12 V and 100 A. DANGER The procedure in this section is for qualified service personnel. Follow the steps given below to connect a DC power source. 1. Use a flat-blade screwdriver to remove the two screws holding the transparent cover over the power supply lugs. FIGURE 31 The BigIron RX-8 and BigIron RX-16 DC power supply 1 DC IN DC OUT ALM 2 1 Screws holding power lugs 2 Screws holding transparent cover 2. Use a Phillips head screwdriver to remove each of the power lugs. 3. Crimp #8 AWG power supply wire into the power lugs and reconnect the power lugs to the power supply unit. FIGURE 32 Crimping the power supply wire in the lug 1 1 #8 AWG power supply wire 4. Re-attach the transparent cover over the power supply lugs that was removed in Step 1. 5. Connect the wire to your DC power source, making sure to connect the -48V cable to the negative terminal on the power supply and the 0V cable to the positive terminal as marked on the power supply. 46 BigIron RX Installation Guide 53-1001811-01