The 3500/15 AC and DC Power supplies are half-heightmodules and must be installed in designated slots on the leftside of the rack. The 3500 rack can contain one or two powersupplies with any combinations of Ac and DC. Either supplycan power a full rack.
When two power supplies are installed in a rack, the one inthe lower slot acts as the primary supply, and the other in theupper slot acts as the backup supply. lf installed, the secondsupply is the backup for the primary one.

Removing or inserting either power supply module does notdisrupt operation of the rack as long as a second power
supply is installed.
The 3500/15 AC and DC Power supplies accepts a wide rangeof input voltages and converts them to voltages acceptablefor use by other 3500 modules. The following power suppliesare available with the 3500 Series Machinery ProtectionSystem:
Universal AC Power
High Voltage Dc Power supplyLow Voltage DC Power supply