Specifications

46 PowerEdge R420 Technical Guide
Maximum shock
Operating
Half sine shock in all operational orientations of 31G +/– 5% with a pulse duration of 2.6ms
+/– 10%
Storage
Half sine shock on all six sides of 71G +/– 5% with a pulse duration of 2ms +/–10%; square
wave shock on all six sides of 27G with velocity change at 235 in/sec or greater
Altitude
Operating
–15.2m to 3048m (–50 ft to 10,000 ft)
Storage
–15.2m to 12,000m (–50 ft to 39,370 ft)
Airborne contaminant level
Class G1 or lower as defined by ISA-S71.04-1985
Power supply specifications
Table 27 lists power supply specifications for the PowerEdge R420.
Table 27. Power supply specifications
Specification
Redundant 350W
Non-redundant 550W
Redundant 550W
Current consumption
4.8–2.4A
7.4–3.7A
7.4–3.7A
Supply voltage
100–240VAC
1
100–240VAC
1
100–240VAC
1
Frequency
50/60Hz
50/60Hz
50/60Hz
Heat dissipation
(BTU/hr max)
1356
2317
2133
Maximum inrush current
2
55A
55A
55A
1
Auto-ranging
2
Under typical line conditions and over the entire system ambient operating range, the inrush current may reach 55A per power supply for
10ms or less.
Rack rail specifications
Table 28 lists the spacing dimensions for the R420 sliding and static rails.
Table 28. Rail adjustability range
Product
Rail
identifier
Rail type
Rail adjustability range (mm)
Rail depth (mm)
Square
Round
Threaded
without
CMA
with
CMA
Min
Max
Min
Max
Min
Max
R420
A7
Sliding
681
868
667
861
681
883
720
845
A8
Static
608
879
594
872
604
890
622
—
The adjustment range of the rails is a function of the type of rack in which they are being mounted.
The min-max values listed above represent the allowable distance between the front and rear
mounting flanges in the rack. Rail depth without the CMA represents the minimum depth of the rails
with the outer CMA brackets removed (if applicable) as measured from the front mounting flanges
of the rack.