Dell PowerEdge R720 Technical Guide - Page 53

Table 31 lists power supply specifications for the PowerEdge R720 and R720xd. Specification 1100W DC Current consumption Supply voltage 32A (X2) -48V to -60V de CC Frequency -48V to -60V de CC Heat dissipation (BTU/hr max.) 4416 1Auto-ranging 1100W AC 12A-6.5A 100-240VAC1 50/60Hz 4100 750W AC 495W AC 10A-5A 100-240VAC1 50/60Hz 2891 6.5A-3A 100-240VAC1 50/60Hz 1908 Table 32 details the environmental specifications for the R720 and R720xd. For the most up-to-date information, see the PowerEdge R720 and R720xd Systems Owner's Manual and the PowerEdge R720 and R720xd Getting Started Guide on Support.Dell.com/Manuals. For additional information about environmental measurements for specific system configurations, see Dell.com/environmental_datasheets. Temperature and humidity Continuous operation Expanded operation 10°C to 35°C at 10% to 80% relative humidity (RH), with 26°C max dew point. De-rate maximum allowable dry bulb temperature at 1 °C per 300m above 900 m (1 °F per 550 ft). When using the PowerEdge R720 with internal GPU card(s), the continuous operation range is 10°C to 30°C at 10% to 80% RH, with 26 °C max dew point. When operating in the expanded temperature range, system performance may be impacted. When operating in the expanded temperature range, ambient temperature warnings may be reported on the LCD (R720 only) and in the System Event Log. < 10% of annual operating hours: 5 °C to 40 °C at 5% to 85% RH with 26 °C dew point. Outside the standard operating temperature (10°C to 35°C), the system can operate down to 5°C or up to 40°C for a maximum of 10% of its annual operating hours. For temperatures between 35°C and 40°C, de-rate maximum allowable dry bulb temperature by 1°C per 175 m above 950m (1°F per 319 ft). < 1% of annual operating hours: -5°C to 45°C at 5% to 90% RH with 26°C dew point. Outside the standard operating temperature (10°C to 35°C), the system can operate down to -5°C or up to 45°C for a maximum of 1% of its annual operating hours. For temperatures between 40°C and 45°C, de-rate maximum allowable dry bulb temperature by 1°C per 125m above 950m (1°F per 228ft). Expanded operating temperature restrictions:  Do not perform a cold startup below 5°C  The operating temperature specified is for a maximum altitude of 3050m (10,000ft)  Express Flash PCIe SSDs, GPUs, and LRDIMMs are not supported  130W (4 core) processors are not supported  Redundant power supplies are required  Non Dell qualified peripheral cards and/or peripheral cards greater than 25W are not supported 53 PowerEdge R720 and R720xd Technical Guide