Dell PowerEdge R520 Owner's Manual

Power Supplies

Your system supports:

Two 495 W, 750 W, or 1100 W AC power supply modules
One cabled power supply module 550 W (non-redundant)
Two 750 W or 1100 W DC power supply modules
- When two identical power supplies are installed, the power supply configuration is redundant (1 + 1). In redundant mode, power is supplied to the system equally from both power supplies to maximize efficiency.
- When only one power supply is installed, the power supply configuration is non-redundant (1 + 0). Power is supplied to the system only by the single power supply.

NOTE: If two power supplies are used, they must be of the same type and have the same maximum output power.

NOTE: Titanium power supply is nominally rated for 200 VAC to 240 VAC input only.

CAUTION: Do not operate your system with only one 1100 W AC or DC power supply installed.