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 approved and rated, is 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).
Required wires
• One UL 10 AWG, 2 m maximum (stranded) black wire [–(48–60) V DC]
• One UL 10 AWG, 2 m maximum (stranded) red wire (V DC return)
• One UL 10 AWG, 2 m maximum green/yellow, green with a yellow stripe, stranded wire (safety
ground)
Assembling and connecting the safety ground wire
Prerequisites
WARNING: For equipment using –(48–60) V DC power supply units (PSUs), 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.
Steps
1. Strip the insulation from the end of the green or yellow wire, exposing approximately 4.5 mm (0.175
inch) of copper wire.
2. Using a hand-crimping tool (Tyco Electronics, 58433-3 or equivalent), crimp the ring-tongue
terminal (Jeeson Terminals Inc., R5-4SA or equivalent) to the green/yellow wire (safety ground wire).
3. Connect the safety ground wire to the grounding post on the back of the system by using a #6-32
nut equipped with a locking washer.
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