Brocade Communications Systems VDX 8770-8 Installation Guide Page 32

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Connecting an AC power cord
1. Plug the power cord into the power supply.
2. Route the cable so it will be out of the way when connected to the power source.
3. Plug the other end of the cable into the power source.
Connecting a DC power cord
1. Use a #1 Phillips screwdriver to remove the screw that secures the safety cover over the power lugs
and remove the safety cover.
2. Use a #2 Phillips screwdriver to unscrew the power lugs.
3. Obtain heat shrink tubing with the following specifications to install on the #2 AWG power supply
input wire:
Inside diameter: 1.27 cm (.5 in.)
Minimum 2:1/50% shrink ratio
Nominal Rec. Wall Thickness: 30480 mm (.012 in.) minimum
Dielectric strength: 800V/mil
Tensile strength: greater than or equal to 5000 psi
Operating temperature: -40°C to +150°C (-40°F to 302°F) minimum
RoHS compliant
4. Cut off a 5.08 cm (2 in) lengths for each #2 AWG power supply wire.
5. Slide the tubing over the #2 AWG power supply wire.
6. Crimp the #2 AWG power supply wire into the power lug.
7. Slide the tubing over the lug to the brown strip closest to the lug holes.
8. Apply heat to shrink the tubing over the lug and wire insulation.
Installed tubing and lugs on power supply wire should conform to the following illustration.
1 Heatshrink tubing
2 Power lug
FIGURE 9 Heat shrink tubing and lug on DC power supply cable
9. Connect the power lugs to the power supply unit.
Connect the -48V wire to the negative terminal and the 0V wire to the positive terminal.
NOTE
The DC return must be isolated from the chassis ground (DC-I) when making connections to the
power supply.
Connecting an AC power cord
32 Brocade VDX 8770-8 Hardware Installation Guide
53-1002564-07
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