7204 Models 518 and 536 External Disk Drives
Dimensions
Height 55 mm 2.2 in.
Width 250 mm 9.8 in.
Depth 275 mm 10.8 in.
Weight 3.6 kg 7.8 lbs.
Electrical
Power source loading 0.03 @ 120 V ac
(typical in kVA)
Voltage range (V ac) 100 to 125 or 200 to 240 (autoranging)
Frequency (hertz) 50 or 60
Thermal output
(typical)
95 Btu/hr
Power requirements
(typical)
28 watts
Power factor 0.8 to 0.9
Inrush Current³ 47.6 amps at 120 Vac, 85.7 amps at 208 Vac
Maximum altitude 2135 m (7000 ft.)
Temperature
Requirements
Operating
16 to 32°C
(60 to 90°F)
Non-Operating
10 to 43°C
(50 to 110°F)
Humidity
Requirements
Operating Non-Operating
(Noncondensing) 8 to 80% 8 to 80%
Wet Bulb 23°C (73°F) 27°C (80°F)
Noise Emissions¹ Operating Idle
L
WAd
5.5 bels 5.4 bels
L
pAm
N/A N/A
<L
pA
>
m
50 dBA 49 dBA
Impulsive or
prominent discrete
tones
No No
Clearances Front Back Left Right
Install/Air Flow² 152 mm(6 in) 152 mm(6 in) N/A N/A
Service 152 mm(6 in) N/A N/A N/A
Footprint
2
Width
250mm(9.8 in)
Depth
579mm(22.8 in)
1. See “Noise Emission Notes” on page 336 for definitions of noise emissions positions.
2. The amount of space needed by the unit during normal operation is indicated by the footprint dimensions.
3. Inrush currents occur only at initial application of power, no inrush occurs during a normal power off-on cycle.
Chapter 8. Physical Characteristics of the 7200 Series 289
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