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NOTE: When installing, hot-swapping, or hot-adding a new power supply unit, wait for 15
seconds for the system to recognize the power supply unit and determine its status. The power
supply redundancy may not occur until discovery is complete. Wait until the new power supply
unit is discovered and enabled before you remove the other power supply unit. The power-
supply unit status indicator turns green to signify that the power supply unit is functioning
properly.
Related videos
http://www.Dell.com/XCSeries/XC730xd/PSU
Wiring instructions for a DC power supply unit
Your system supports up to two –(48–60) V DC power supplies (when available).
WARNING: For equipment using –(48–60) V DC power supplies, a qualified electrician must
perform all connections to DC power and to safety grounds. Do not attempt connecting to DC
power or installing grounds yourself. All electrical wiring must comply with applicable local or
national codes and practices. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow all safety instructions that came with the product.
CAUTION: Wire the unit with copper only, unless otherwise specified, use only 10 American Wire
Gauge (AWG) wire rated minimum 90 ºC for source and return. Protect the –(48–60) V DC (1
wire) with a branch circuit over-current protection rated 50 A for DC with a high interrupt
current rating.
CAUTION: Connect the equipment to a –(48–60) V DC supply source that is electrically isolated
from the AC source (reliably grounded –(48–60) V DC SELV source). Ensure that the –(48–60) V
DC source is efficiently secured to earth (ground).
NOTE: A readily accessible disconnect device that is suitably approved and rated shall be
incorporated in the field wiring.
Input requirements
• Supply voltage: –(48–60) V DC
• Current consumption: 32 A (maximum)
Kit contents
• Dell part number 6RYJ9 terminal block or equivalent (1)
• #6-32 nut equipped with lock washer (1)
Required tools
Wire-stripper pliers capable of removing insulation from size 10 AWG solid or stranded, insulated copper
wire
NOTE: Use alpha wire part number 3080 or equivalent (65/30 stranding)
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