IBM 8408-44E, Site And Hardware Planning

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Table 23. Electrical
1,2,3
(continued)
Electrical characteristics Properties
Phase Single
Notes:
1. The power supplies for AC or DC voltage do not change. Only the power chunnel is different. The power
chunnel uses internal cables to carry power from the rear of the system node to the power supplies that are in
the front of the system node.
2. All measurements made in conformance with ISO 7779 and declared in conformance with ISO 9296.
3. AC and HVDC power supplies cannot be mixed in the same server or I/O drawer. IBM recommends that AC
products and HVDC products with HVDC PDUs are installed in separate racks. However, AC and HVDC
products can be supported in the same rack if all grounding (earthing) is done in accordance with the applicable
electrical code or codes. IBM provides documentation for different AC and HVDC products about the
disconnecting means for service. If a different disconnecting means is to be used for service of the equipment in
a rack with AC-powered and DC-powered products, the disconnecting means must be made clear to service.
Table 24. Environment requirements
Environment Recommended operating Allowable operating Nonoperating
ASHRAE class A3
Airflow direction Front-to-back
Temperature
1
18°C - 27°C (64°F - 80°F) 5°C - 40°C (41°F - 104°F) 1°C - 60°C (34°F - 140°F)
Humidity range 5.5°C (42°F) dew point (DP)
to 60% relative humidity
(RH) and 15°C (59°F) dew
point -12.0°C (10.4°F) DP and 8%
- 80% RH 5% - 80% RH
Maximum dew point 24°C (75°F) 27°C (80°F)
Maximum operating
altitude 3050 m (10000 ft)
Shipping temperature -40°C to 60°C (-40°F to
140°F)
Shipping relative humidity 5% - 100%
1. Derate maximum allowable dry-bulb temperature 1°C per 175 m above 950 m.
Table 25. Service clearances for rack-mounted expansion unit
Front Back Sides
914 mm (36 in.) 914 mm (36 in.) 914 mm (36 in.)
Side and top clearances are optional during operation.
Safety compliance:
This hardware is designed and certified to meet the following safety standards: UL
60950; CAN/CSA C22.2 No. 60950–00; EN 60950; IEC 60950 including all National Differences.
5147-024, ESLL, and ESLS storage enclosures
Hardware specifications for 5147-024, ESLL, and ESLS storage enclosures provide detailed information for
your storage enclosures, including dimensions, electrical, power, temperature, environment, and service
clearances.
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Site and hardware planning