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CAUTION:
Wire the unit with copper only, unless otherwise specified, use only 10 American Wire Gauge (AWG)
wire rated minimum 90ºC 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).
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 with a yellow stripe, stranded wire (safety ground).
Assembling and connecting 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 and 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.
110
Installing and removing system components
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