Dell Precision 7920 Rack Owner's Manual

PSU specifications

The Precision 7920 Rack system supports up to two AC power supply units (PSUs).

Table 1. PSU specifications
The table below are the specifications for 1100 W, 1600 W, power supplies:
PSU	Class	Heat dissipation (maximum)	Frequency	Voltage	Current
1100 W AC	Platinum	4100 BTU/hr	50/60 Hz	100–240 V AC, autoranging	12 A–6.5 A
1600 W AC	Platinum	6000 BTU/hr	50/60 Hz	100–240 V AC, autoranging	10 A

NOTE:Heat dissipation is calculated using the PSU wattage rating.

NOTE:This system is also designed to connect to the IT power systems with a phase to phase voltage not exceeding 230 V.

NOTE:If a system with 1600 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to 800 W.